science experiment hard boiled egg

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Popular Egg Science Experiments

What You Need for this Experiment:

• Use a paper towel to coat the inside edge of the bottle mouth with a little bit of vegetable oil for lubrication. 
• Dip the peeled egg in water  
• Set the egg with the small end down in the mouth of the glass bottle. It should be slightly larger than the mouth of the bottle/top of the bottle, so it doesn't fall inside. 
• Have an adult light a match to light the end of a strip of paper on fire. 
• Lift the egg off of the bottle, drop the paper inside with the flame down, and quickly replace the egg. Watch the egg wiggle a little in the bottle mouth, and then get sucked inside as the bottle cools! 

First, the science behind a hard-boiled egg: Egg whites are made of water and proteins. 

Proteins are made of long chains of amino acids, but in an egg, the chains are clumped tightly together in individual spheres.  (These are called "globular proteins.") 

When the egg is heated, the proteins and water molecules begin to move faster. As they move and collide with each other, the individual protein chains start to denature, eventually bonding loosely with other protein chains, forming a network of proteins with water trapped inside.  The consistency has changed from runny egg white to a soft solid! 

How does this squishy-but-solid egg get mysteriously pushed inside the bottle? 

The answer is all about the pressure of the air. When you first set the egg on the bottle, the air pressure inside the bottle matched the air pressure outside, so nothing happened. 

When you dropped the burning paper through the neck of the bottle, it caused the air inside to heat up and expand rapidly. That expanding air pushed the egg aside and escaped from the bottle; that's why you saw the egg vibrating. 

When the fire consumed all the oxygen inside the bottle, the flame went out and the remaining air in the bottle cooled down. Cool air takes up less space, exerting less pressure inside the bottle.   The egg acted as a seal to prevent outside air from getting in to fill the extra space.

The result was an unbalanced force—the force of the air pushing on the egg from outside the bottle was greater than the force of the air pushing up on it from inside the bottle. Voila - the egg was pushed into the bottle!

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The pressure inside the bottle must be higher than outside the bottle. To increase the pressure, turn the bottle upside down and tilt it until the small end of the egg is sitting in the mouth. 

Now put your mouth close to the bottle and blow, forcing more air into the bottle and raising the pressure inside. When you take your mouth away, the egg should pop out - just be careful it doesn't hit you in the face! 

Fizzy Easter Egg Dye

• Hard-boiled eggs 
• Food coloring 
• Sodium bicarbonate  (baking soda) 
• Vinegar 
• Bowls 
• Paintbrushes 
• Tongs 
• Newspaper or paper towels

Make a paste of baking soda and water and add a few drops of food coloring. Repeat in separate bowls with as many colors as you’d like.

Using a paintbrush, apply the baking soda mixture to a hard-boiled egg (if the mixture is too thick and goopy, add more water, several drops at a time until it has thinned to the right consistency to spread easily). Once your egg is decorated the way you want it, set it in an empty bowl.

Pour about ½ cup of vinegar directly over each egg and enjoy the colorful, fizzy reaction!

Once the fizz has died down, use tongs to carefully fish your egg out of the liquid and set it on newspapers or a stack of paper towels to dry.

A basic chemical reaction between the baking soda (which is a base) and the vinegar (an acid) is what caused all the fizzing and bubbling! The baking soda made a type of paint when you mixed it with water and food coloring. After the chemical reaction, the baking soda and vinegar were mostly used up, leaving the dye behind on the eggs. 

Eggshell Geode Science Project

• Raw eggs 
• Water 
• 250 ml beakers  
• Funnel  (optional) 
• Plastic cups  
• Epsom salt  (magnesium sulfate),  alum  (aluminum potassium sulfate) or other solids commonly used to grow crystals, like  Borax  (sodium tetraborate),  copper sulfate , etc.) 
• White school glue and paint brush (for alum crystal geodes only) 
• Crack the eggs close to the top of the narrow end. Remove yolk and white. 
• Carefully place eggshell under warm running water and peel the membrane from the shell. Be very gentle! This part is tricky and requires much delicacy to avoid breaking the fragile eggshells. 
• Once the membrane is removed and the eggshells are rinsed, invert them on a paper towel to dry. 
• For alum crystal geodes, paint the inside of the shell with white glue. Then sprinkle with alum powder and let dry. 
• To make supersaturated solution, use your microwave to heat 100 ml of water in a 250 ml beaker just until boiling. Remove the beaker using hot pads or heat-resistant leather gloves. 
• Stir in your solid (Epsom salt, alum, etc.), one spoonful at a time. Your solution should be clear. Heat it up more if all the solid won’t dissolve. 
• Add food coloring and let cool for about 10 minutes. 
• Carefully submerge the eggshell. Or set it in a clean empty cup and use the funnel to fill it with the supersaturated solution. 
• Leave the eggshell and supersaturated solution undisturbed for several days or longer. 
• After a few days, you should start to see crystals forming inside your eggshell. Use a spoon to remove it from the solution, or carefully pour the supersaturated solution out of the eggshell. 

A crystal is a hard, solid substance made of molecules that bond together in specific patterns to form a shape with straight edges and flat surfaces. If you made more than one type of crystal eggshell geode, you saw that not all crystals have the same shape or size. The site where a crystal begins to grow, called its nucleation site, determines its size: fewer nucleation sites mean larger crystals, and many nucleation sites produce smaller crystals. 

A few molecules of magnesium sulfate or aluminum potassium sulfate (or whatever solid you used) found each other in the solution and joined together in a crystal formation. More molecules joined until enough gathered to form a visible crystalline solid. Chemists refer to this as a crystal ‘falling out of’ the solution. If you left these crystals in the solution, they’d continue to grow. 

Learn about Fizz, Foam, and Fire! Perform several chemical reactions to identify evidence for chemical change, use clues to describe reactants and products, and determine whether reactions are endothermic or exothermic.

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Egg in a Bottle Experiment – Two Easy Methods

The Egg in a Bottle experiment is a classic science project that demonstrates the principles of air pressure in a fun and visually appealing way. Here are two different methods for performing this project, each highlighting how changing temperature in turn changes air pressure and forces a hard-boiled egg into a bottle.

Egg in a Bottle Experiment Materials

• Glass bottle with a neck slightly narrower than the egg’s diameter
• Peeled hard-boiled egg
• Matches or lighter
• Small piece of paper

Finding the right size of bottle is a challenge. Remember there are different sizes of eggs available for sale. A sturdy plastic bottle is an option instead of glass, but sometimes the temperature and pressure change deforms the bottle.

Egg in a Bottle Using a Burning Piece of Paper – Method #1

• Preparation: Peel the hard-boiled egg.
• Ignite the Paper: Light a small piece of paper using matches or a lighter. Just using a wooden match works too, but a piece of paper typically burns longer and changes the temperature inside the bottle more.
• Place the Paper in the Bottle: Quickly drop the burning paper into the bottle.
• Position the Egg: Immediately place the peeled egg on the neck of the bottle. If you like, wet the egg with water so it is a bit slippery. Sometimes this helps a larger egg fit through a smaller hole.
• Observation: After the flame goes out, the temperature inside the bottle cools and the egg slides into the bottle. Note: the egg does not enter the bottle because fire consumes oxygen! Oxygen merely rearranges into other compounds.

Explanation

When you drop the burning paper into the bottle, it heats the air inside. Heat gives molecules kinetic energy so they move more rapidly and have an increased number of collisions with the wall of the bottle. In other words, heat increases the air pressure inside the bottle . When you place the egg on the bottle, it seals it. Fresh air does not enter the bottle, so the flame consumes the oxygen and then goes out. As the air cools down, it contracts, creating a lower pressure inside the bottle compared to the outside air. The higher external air pressure pushes the egg into the bottle.

Egg in a Bottle Using Hot and Cold Water – Method #2

• Heat the Bottle: Place the bottle in hot water, which heats the air inside. (Do not submerge the bottle and fill it with water.)
• Position the Egg: After a few minutes, remove the bottle from the hot water and quickly place the peeled egg on the neck of the bottle. (If you like, place the egg on the bottle and then heat it. It makes no difference.)
• Cool the Bottle: Immerse the bottom of the bottle in cold water.
• Observation: The air inside cools and contracts. The outside air has a higher pressure than the air inside the bottle, pushing the egg through the bottle opening.

Heating the bottle with hot water expands the air inside the bottle. Some of it escapes the bottle. The egg seals the bottle. When you place the bottle in cold water, the air inside cools down and contracts, creating a lower pressure inside the bottle. The higher external air pressure pushes the egg into the bottle.

How to Get the Egg Out of the Bottle

There are ways of getting the egg back out of the bottle without breaking it up. Here are three methods:

Method 1: Reversing the Pressure

• Tilt the Bottle: Turn the bottle upside down so the egg is at the neck.
• Blow Air into the Bottle: Carefully create a seal around the bottle’s mouth with your lips and blow air forcefully into the bottle.
• Increase Pressure: The increased air pressure inside the bottle pushes the egg back out through the neck.

Method 2: Lubrication Method

This method works if there is only a small size difference between the egg and the bottle opening.

• Add Lubricant: Apply a thin layer of cooking oil or dish soap around the neck of the bottle and the surface of the egg to reduce friction.
• Position the Bottle: Turn the bottle upside down so the egg is at the neck.
• Gently Shake: Gently shake the bottle. The force of shaking helps slide the egg out. The lubricant makes it easier for the egg to pass through the neck of the bottle.

Method 3: Temperature Change

• Position the Egg: Tilt the bottle upside down so the egg is at the neck.
• Heat the Bottle: Once the egg is in the bottle neck, carefully change the bottle’s position so you can heat it. Submerge the bottom of the bottle in hot water and heat the air inside. As the air expands, pressure increases and pushes the egg out.

Of course, there is a chance these methods won’t work if the egg is too big. If you really need the egg removed and pressure is not working, insert a stick or wire into the bottle, break the egg, and shake out the pieces.

Relation to the Ideal Gas Law and the Combined Gas Law

The gas law that predicts the behavior of the egg in a bottle experiment is the Combined Gas Law , which is a special case of the Ideal Gas Law .

The equation for the Ideal Gas Law is PV = nRT, where:

• P is the pressure
• V is the volume
• n is the number of moles of gas
• R is the ideal gas constant
• T is the temperature

In this experiment, the burning paper or hot water increases the temperature (T) of the air inside the bottle. According to the Ideal Gas Law, if the volume (V) of the bottle remains constant, an increase in temperature results in an increase in pressure (P). When you place the egg on the bottle and the air inside cools, the temperature decreases, leading to a decrease in pressure. The external air pressure (higher P) then pushes the egg into the bottle to equalize the pressure difference.

For the most part, the number of moles of air, volume of air (volume of the jar), and ideal gas constant remain the same throughout the project. This makes using the Combined Gas Law possible. The Combined Gas Law is a rearrangement of the Ideal Gas Law that combines Boyle’s Law, Charles’s Law, and Gay-Lussac’s Law. The Combined Gas Law is given by:

P 1 V 1 /T 1 = P 2 V 2 /T 2

• P is the pressure of the gas
• V is the volume of the gas
• T is the temperature of the gas (in Kelvin)
• Subscripts 1 and 2 refer to the initial and final states of the gas, respectively.

So, if volume remains the same, the equation only balances out when temperature and pressure both increase or both decrease.

Method 1: Using a Burning Piece of Paper

• The burning paper heats the air inside the bottle, increase the temperature (T 1 ).
• As the temperature increases, the pressure (P 1 ​) inside the bottle also increases.
• Some of the air escapes the bottle because of the increased pressure. But, it’s not enough to affect the outcome.
• The flame consumes the oxygen and the fire goes out, decreasing the temperature (T 2​ ) to decrease.
• As the temperature decreases, the pressure (P 2 ) inside the bottle decreases. A common misconception is that the pressure decreases because the flame consumes oxygen, forming a partial vacuum. This is incorrect because no oxygen is lost. Instead, combustion forms carbon dioxide and water using carbon and hydrogen from the match or paper. The number and type of atoms inside the bottle remains the same.
• The volume of the bottle (V) remains constant, so the decrease in pressure creates a partial vacuum inside the bottle.
• The lower pressure inside the bottle (P 2 ​) compared to the atmospheric pressure outside causes the higher external pressure to push the egg into the bottle to equalize the pressure difference.

Method 2: Using Hot and Cold Water

• Heating the bottle in hot water increases the temperature (T 1 ​) of the air inside the bottle.
• The increased temperature causes the air to expand, and some air escapes the bottle, slightly increasing the volume temporarily.
• Placing the bottle in cold water cools the air inside, decreasing the temperature (T 2​ ).
• As the temperature decreases, the pressure (P 2 ​) inside the bottle decreases.
• The volume of the bottle (V) is effectively constant after the initial escape of some air, so the decrease in pressure creates a partial vacuum inside the bottle.
• Castka, Joseph F.; Metcalfe, H. Clark; Davis, Raymond E.; Williams, John E. (2002).  Modern Chemistry . Holt, Rinehart and Winston. ISBN 978-0-03-056537-3.
• Clausius, R. (1857). “Ueber die Art der Bewegung, welche wir Wärme nennen”.  Annalen der Physik und Chemie  (in German). 176 (3): 353–79. doi: 10.1002/andp.18571760302
• Raff, Lionel M. (2001)  Principles of Physical Chemistry  (1st ed.). Pearson College Div. ISBN:  978-0130278050.

Related Posts

How to Do the Egg in a Bottle Experiment

“Wow! How did you do that??” As a parent or a teacher, those are some of the best words you can hear. Well, after I love you, of course. And there’s nothing like science to get the kids intrigued and wondering how something works. That’s why we HAD to do the classic Egg in a Bottle Experiment . An egg, some fire, and you’ve got a really cool bottle trick on your hands! And some fascinated kids ready to learn.

Egg in a Bottle Experiment Supplies Needed

• Hard-boiled egg, peeled (be sure to have a few because you’ll want to see this again!)
• 1-quart glass milk bottle or another glass bottle with a mouth smaller than the egg
• Matches or lighter

SAFETY FIRST!

This egg in a bottle trick is best done as a demonstration by adults. Children should never use matches or a lighter. Have the adult complete the part of this experiment that deals with lighting the matches and burning the paper. Always keep matches and lighters out of the reach of children. Also, keep a fire extinguisher nearby in case of emergency.

• Cut a strip of paper 6-8″ long and 3/4″ wide. The paper should be narrow enough to easily fit in the bottle and long enough that it ends below the top of the bottle when placed fully inside.
• Get your eggs ready, peeled, and nearby.
• Light the piece of paper and drop it into the bottle.

• Quickly place the hard-boiled egg on top of the mouth of the bottle.

• Watch it pop inside the bottle!

Let’s watch the experiment in action in this video…

How Did the Egg Get Sucked Into the Bottle?

This is a classic science experiment that demonstrates the power of pressure. It looks like the egg is getting sucked into the bottle. But, as my 9th-grade science teacher Mrs. Grimm drilled into our heads,  there’s actually no such thing as suction. It’s just high pressure winning over low pressure. And air pressure follows something called the Ideal Gas Law.

Pressure * Volume = number of moles * R (gas  constant) * Temperature

This is a cool way of remembering that when the temperature goes up, the pressure goes up, too in a fixed environment like a milk bottle. And vice versa.

So what’s happening in the experiment? When you start, the air pressure inside the bottle and the air pressure outside the bottle are equal, and the egg can’t move. But, as the paper burns inside the bottle, the temperature goes up, causing the pressure to go up. After you place the egg on the bottle top, it seals up the bottle a bit, but still allows the high pressure to force the air out of the bottle. This is why you may get to see the egg do a little jiggle on top. But, when all the air is forced out of the bottle, the burning paper runs out of oxygen and can’t burn anymore. So the flame goes out. And as you can guess, when the flame goes out, the bottle cooled and the air temperature goes down. And, so does the pressure. Suddenly, the pressure on the outside of the bottle is higher than the pressure on the inside of the bottle. And POP! In goes the egg. Because high pressure won over low pressure and air pushed the egg into the bottle.

How to Remove the Egg from the Bottle

Here’s your challenge after the experiment. How do you get the egg out of the bottle? It’s a great time for experimenting! You just have to figure out how to make high pressure win over low pressure again. Basically, get the pressure in the bottle high enough that it can push the egg out. Good luck. I tried blowing in there with a straw-like I heard would work. No joy. But I’m guessing that’s why there are no pictures of getting eggs out of the bottle on the web… So first experiment, then grab a fork, break it up, and pop the bottle in the dishwasher instead…

More Science Fun for Kids

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Egg In A Bottle

Can an egg slip into a bottle without you even touching it? Sounds like magic, right? Well, it’s not magic – it’s science! Find out you can get an egg into a bottle. We’ll guide you through the steps, explain the science stuff in simple terms and even give you tips to turn it into an egg-cellent science project! This egg in a bottle experiment is about to take your love for science to a whole new level. Are you egg-cited?

Explore Air Pressure With Kids

This egg in a bottle project is a fun way to learn about how changes in air pressure can result in a fascinating and seemingly magical outcome. All you need are a few supplies you would have in your own kitchen. That’s why we call it kitchen science !

Our science experiments are designed with you, the parent or teacher, in mind! Easy to set up, and quick to do, most activities will take only 15 to 30 minutes to set up and are heaps of fun! Plus, our supplies lists usually contain only free or cheap materials you can source from home!

Grab a bottle or jar, and find out how an egg can get sucked in the bottle. Get your kids to make a prediction, what do they think will happen to the egg when it seals the bottle?

Encourage kids to think critically and analyze why the egg moves into the bottle. They will learn to connect cause and effect, linking the heating and cooling of air to the movement of the egg.

This experiment may require some patience and persistence as kids troubleshoot and try different approaches to make the egg move into the bottle successfully. A great way to teach them the importance of perseverance in scientific exploration.

Extend the activity by getting kids to make observations, form hypotheses, conduct the experiment, and draw conclusions based on their findings. Kids can even share their findings and explain the science behind the experiment. This may involve discussing the concepts with peers, teachers, or parents.

Using The Scientific Method

The scientific method is a process or method of research. A problem is identified, information about the problem is gathered, a hypothesis or question is formulated from the information, and the hypothesis is tested with an experiment to prove or disprove its validity.

Sounds heavy… What in the world does that mean?!? It means you don’t need to try and solve the world’s biggest science questions! The scientific method is all about studying and learning things right around you.

As children develop practices that involve creating, gathering data evaluating, analyzing, and communicating, they can apply these critical thinking skills to any situation.

LEARN MORE HERE: Using The Scientific Method with Kids

Note: The use of the best Science and Engineering Practices is also relevant to the topic of using the scientific method. Read more here and see if it fits your science planning needs.

Helpful Science Resources

Here are a few resources that will help you introduce science more effectively to your kiddos or students. Then you can feel confident yourself when presenting materials. You’ll find helpful free printables throughout.

• Best Science Practices (as it relates to the scientific method)
• Science Vocabulary
• 8 Science Books for Kids
• All About Scientists
• Science Supplies List
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• Join us in the Club

How Does An Egg Get Sucked Into A Bottle?

When you add the burning paper to the bottle or jar, the air inside gets hot. When the air gets hot, it takes up more space inside the jar. The egg is placed on top of the bottle creating a seal that keeps the air from escaping.

As the air inside the bottle heats up, it expands. According to Boyle’s Law, when the volume of the gas (air) increases, its pressure decreases. Once the paper burns out, the air inside the bottle begins to cool.

As the air inside the bottle cools, it contracts, creating a partial vacuum. Outside air pressure is now greater than the pressure inside the bottle. The pressure difference between the inside and outside of the bottle causes the egg to be pushed into the bottle.

This experiment is a hands-on illustration of the principles outlined by Boyle’s Law. Boyle’s Law states that at a constant temperature, the pressure of a gas is inversely proportional to its volume. In simple terms, if you squeeze a gas into a smaller space, its pressure goes up, and if you let it expand into a larger space, its pressure goes down.

Related Experiments: Use air pressure to crush a can , and make water rise.

Turn It Into A Egg In A Bottle Science Project

Science projects are an excellent tool for older kiddos to show what they know about science! Plus, they can be used in all sorts of environments including classrooms, homeschool, and groups.

Kids can take everything they have learned about using the scientific method , stating a hypothesis, choosing variables , making observations and analyzing and presenting data.

Want to turn this experiment into an awesome science fair project? Check out these helpful resources.

• Science Project Tips From A Teacher
• Science Fair Board Ideas
• Easy Science Fair Projects

Free Printable Science Journal Worksheets

Create a science notebook with these easy-to-use science worksheets to accompany any experiment. Grab your free science process journal pack !

Egg in a Bottle Experiment

• Small mouth
• Glass bottle or jar (A glass coffee or a spaghetti sauce bottle will work well)
• Lighter or match
• Paper strip
• Peeled hard boiled egg that is slightly larger than the bottle’s opening

Instructions:

WARNING: Fire is involved so adult supervision is required!

STEP 1: Fold a paper strip and light it with a match.

STEP 3: Drop the burning paper into the jar or bottle and place the egg on top.

STEP 3: Now watch the magic happen.

Tip: If the egg does not pass easily into the jar, you can lubricate the edge of the jar with vegetable oil.

STEP 4: Record your observations with our printable science worksheets above.

Investigate: Try placing the jar in a bowl of hot water. Did it have the same effect?

More Fun Science Experiments To Try

• Egg in Vinegar Experiment
• Bread Mold Experiment
• Salt Water Density Experiment (this also uses an egg!)
• Can Crusher Experiment
• Floating Rice Experiment
• Glowing Spinach

Printable Science Projects Pack For Kids

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• My science journal writing prompts  explore what it means to be a scientist!!
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Breadcrumbs

Egg in a Bottle Science Experiment

The experiment involves placing a hard-boiled egg into a glass bottle without using any physical force or breaking the egg.

Materials you will need

A glass bottle with a narrow neck (such as a milk bottle)

A hard-boiled egg

Matches or a strip of paper

Vinegar (optional)

A lighter (optional)

Methodology

• Begin by hard-boiling an egg and allowing it to cool down completely. Make sure the egg is hard-boiled, as a raw egg could make a mess if it breaks inside the bottle.
• Take the glass bottle and remove any labels or obstructions from the opening. Make sure the bottle is clean and dry.
• If you want to remove the eggshell for a better visual effect, you can soak the egg in vinegar for a day or two. The vinegar will dissolve the shell, leaving the egg covered by a thin membrane. This step is optional but can enhance the experiment.
• Place the peeled hard-boiled egg near the opening of the bottle to ensure that it will fit inside.
• Light a match or a strip of paper and carefully drop it into the bottle. You want to create smoke inside the bottle. Be cautious and make sure not to burn yourself or any surrounding objects. We recommend this is performed by the parent.
• Immediately place the egg on the mouth of the bottle, making sure it covers the entire opening. Take care not to touch the sides of the bottle with the egg.
• Observe what happens. As the smoke inside the bottle cools down, it contracts, creating a partial vacuum. This reduced air pressure inside the bottle will cause the egg to be pushed inside to fill the void. This may take a bit of patience for this to happen, but be careful not to force the egg into the bottle manually.
• Once the egg is inside the bottle, you can tilt the bottle to allow the egg to roll out.

Note: If you don't want to use fire or matches, an alternative method involves heating the air inside the bottle by placing it in a bowl of hot water or using a hairdryer to blow hot air into the bottle. This heating process will create a similar pressure difference, drawing the egg into the bottle.

Remember to exercise caution during the experiment, especially when handling fire or hot objects.

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• Lesson Plans
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• Experiments

Egg in a Bottle

Air pressure and vacuums experiment.

The experiment for this week is another classic, but a very misunderstood one. You will even find that many books of science experiments get this one wrong.

You will need:

• a hard boiled egg
• a wine carafe or bottle with a neck that is just a little too small for
• the egg to fit through
• a piece of paper
• matches or a lighter

Warning: This experiment uses fire, so be careful and follow all safety procedures. Never do fire experiments when you are alone, even if you are an adult. If you are not an adult, then at least one of the people with you should be an adult. Think through the experiment before you try it, to be sure that everything you do is safe.

Once you get the egg peeled, then you have to put it in the bottle. Gently place it on the top of the bottle. Not much happens. It just sits there. If you tried to push the egg into the bottle with your fingers, the egg would tear. We want the egg to be whole when it is inside the bottle. How are we going to do it?

We will start by removing the egg from the top of the bottle. CAREFULLY hold a piece of paper about one inch wide and three inches long. While you are holding one end, use the match to light the other end. As soon as it is burning, drop it into the bottle and quickly place the egg on top. Watch carefully what happens.

The paper burns for a second or two. As the fire goes out, the egg begins to move downwards into the bottle. It squeezes through the neck and drops into the bottle. How did that happen?

Most books will tell you that the paper burned up the oxygen, lowering the air pressure inside the bottle, and that the greater air pressure on the outside of the bottle pushed the egg inside. They get the part about the air pressure right, but the lowered pressure in the bottle is not due to burning up the oxygen.

When you burn paper in oxygen, the carbon in the paper combines with oxygen in the air to form a new gas called carbon dioxide. This gas takes up about as much space as the oxygen, so the burned oxygen is replace with carbon dioxide and the pressure in the bottle stays the same.

But if the egg was pushed into the bottle by air pressure, what lowered the pressure in the bottle? The answer is temperature. While the paper was burning, it heated the air in the bottle. The heating air expanded and pushed out past the egg. If you put the egg on the bottle quickly and watch carefully, you may be able to see the egg shake as the air rushes out past it. As the flame begins to die down, the air inside the bottle cools. As it cools, it gets smaller, reducing the pressure in the bottle. The egg acts as a cork, sealing the top of the bottle to keep air from coming in to balance the pressure. Instead, the higher outside pressure pushes the egg into the bottle.

Now, how do we get the egg out of the bottle? One way is to turn the bottle upside down, with the egg resting in the neck of the bottle. Put your mouth against the mouth of the bottle and blow as hard as you can. This increases the pressure inside the bottle. Quickly move the bottle away from your mouth and the egg should pop out. Rinse off the carbon from the burned paper and your egg is now ready for snack time.

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Egg in a Bottle Trick – Water Balloon Variation

Here’s a modern-day version of the classic egg in the bottle trick using a juice bottle and a water balloon..

Print this Experiment

The Egg in the Bottle trick is a science classic, dating back at least a hundred years. Here’s a variation that uses a water balloon instead of an egg. Be sure to look at the Take It Further ideas for a cool “upside down” twist.

Experiment Videos

Here's What You'll Need

A wide-mouth, glass juice bottle, hard-boiled eggs (just a little wider in size than the opening of the glass bottle), several strips of paper (2 x 6 inches), balloons (9-inch balloons work great), let's try it.

Carefully fill the balloon with water so the balloon is slightly larger than the mouth of the bottle. Tie it off. Make several water balloons just in case the first one breaks.

The glass juice bottle should have a wide mouth between 1 1 / 2 and 2 inches in diameter. If you can find an old-fashioned glass milk bottle, use it! Rinse out the bottle to remove any leftover, sticky, slimy stuff that might be at the bottom.

Here’s the challenge . . . Your job is to find a way to get the balloon into the bottle without breaking it. How are you going to do it? It’s important that you take a minute to test out some of your ideas before jumping ahead to read our solution. Keep trying! Once you’ve come up with your hypothesis, read on to find out our answer.

Start by smearing some water around the mouth of the bottle. The water acts as a lubricant.

The next few actions require some good teamwork. Set the glass bottle in front of you on a table. Make sure the water balloon and strip of paper are close by. The adult member of the team is responsible for lighting the strip of paper on fire and quickly pushing it into the bottle. As soon as the burning paper goes into the bottle, the second team member covers the mouth of the bottle with the water balloon.

The balloon will immediately start to wiggle around on the top of the bottle, the fire in the bottle will go out, and some invisible force will literally “push” the balloon into the bottle. Amazing!

Now it’s on to the next challenge. Can you get the balloon back out of the bottle? Use what you’ve learned about air and air pressure to come up with a way to get the balloon back out. Here’s a hint—try sneaking a straw alongside the balloon when you pull it out. If the outside air can get inside the bottle, the water balloon will come out.

How Does It Work

The burning piece of paper or birthday candles heat the molecules of air in the bottle and cause the molecules to move far away from each other. Some of the heated molecules actually escape out past the egg that is resting on the mouth of the bottle (that’s why the egg or water balloon wiggles on top of the bottle). When the flame goes out, the molecules of air in the bottle cool down and move closer together, making room for new air molecules. This is what scientists refer to as a partial vacuum. Normally, the air outside the bottle would come rushing in to fill the bottle. However, that darn egg is in the way! The pressure of the air molecules outside the bottle is so great that it literally “pushes” the egg into the bottle.

Take It Further

Classic Egg in the Bottle Now that you’ve mastered the technique, substituting a hard-boiled egg for the water balloon. The trick here is to find an egg that is just slightly bigger than the mouth of the bottle. The other little secret is to grease the mouth of the bottle with vegetable oil so that the egg slides right in. If you’re using the same bottle, make sure you rinse it out with water. This step cleans out the old burnt paper and helps circulate more oxygen into the bottle so the paper will burn. Have an adult light the strip of paper on fire. Carefully push the burning strip of paper into the bottle, quickly cover the mouth of the bottle with the egg, and watch what happens next.

Want to get the egg back out so you can do it again? Try this, if you dare . . . put your mouth over the mouth of the bottle and forcefully blow air into the bottle. The egg should pop back out of the bottle right into your mouth! Can it get any cooler than that?

Egg in the Bottle–Upside Down Twist

All you need for this variation is a hard-boiled egg, a glass bottle, several birthday candles, and a match. Carefully hold the wider end of the egg in one hand and slowly push two birthday candles into the narrow end of the egg. Light the candles, turn the bottle upside down, and slowly move it into position an inch above the flaming candles. Allow the flames to heat up the air inside the bottle for just a few seconds and then place the bottle down over the candles. The candles will go out and with a “Pop!” the egg will squeeze up into the bottle!

Safety Information

This activity requires the use of matches and fire. Adult supervision is required.

Real-World Application

When you fly in an airplane or drive high up into the mountains, you’ve prob- ably noticed that your ears sometimes need to “pop.” This “popping” is caused by the same change in air pressure that “pops” the egg into and out of the bottle. Air pressure decreases as altitude increases, so as you go higher, the air pressure decreases, causing the air trapped in your inner ear to push your eardrums outward. Your body tries to regain equilibrium or balance by allowing some of the air in your inner ear to escape through the Eustachian tubes. When the tubes open, the pressure releases and you feel the “pop.” On the way back down to a lower altitude the air pressure increases. The extra pressure from the outside of the ear pushes the eardrums inward. Air moves in through the Eustachian tubes, the ears “pop,” and balance is restored. Many people don’t wait for this to happen on its own because the pressure imbalance can be uncomfortable. Instead, they just plug their noses, close their mouths, and pretend like they’re blowing their noses. Because the air from their lungs has nowhere to go, it is forced into the inner ear through the Eustachian tubes, causing their ears to “pop.”

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Egg in a Bottle – Air Pressure Experiment

• April 21, 2021
• 10 Minute Science , 7-9 Year Olds , Physics

Science is amazing as it does wonders in our real life and around the world.

Today, Let’s explore “Egg in a Bottle”, which proves using simple science concepts anyone can put an egg into a bottle without touching it.

Yes, the egg can move into a bottle without any external help but with the help of science.

Objectives in this Science Activity

Using this experiment, children can learn,

1) Relation between Temperature and Pressure

2) Impact of air pressure on objects

3) Impact of air pressure in our daily activities

4) Properties of air

Amazed! Yes, though the experiment is quick and simple, it carries a lot of scientific information to inspire young scientists.

Egg in a Bottle – Experiment

Supplies required

1) One glass container or jar. Make sure the opening of the glass jar is smaller than the size of a boiled egg because to fit the egg perfectly instead of slipping into the jar easily. Milk and Juice bottles work well for this purpose.

2) A small piece of Paper

3) Fire source i.e. a candle or lighter or a matchbox

4) One or two boiled eggs

Preparations

Just before the experiment, pick fresh and raw eggs and boil them until they turn hard. Probably, this step takes 7-10 minutes.

Once boiled, peel off the outer shell part of the boiled egg and wash it under tap water to remove any hard remnants attached to the egg. Then, keep it aside on the experiment table.

Simple Step by Step Instructions

Step-1:  Place a clean and transparent glass jar on the experiment table.

And then pick a piece of paper and burn it using a lighter. Please make sure the paper is folded into a strip such that it is easy for you to drop it into the jar bottle.

Step-2:  When the paper catches fire, immediately drop it into the glass jar placed on the work table. You must drop the burning paper into the jar before the fire goes off.

Step-3:  Now, Place the hard-boiled egg on top of the glass jar opening perfectly. Then observe the results.

Results:  You will observe the egg slowly moving into the bottle. At times, the egg will go into the glass bottle as it is without any breakages, but sometimes it may spill while squeezing into the bottle.

Note:  If your egg fails or feeling difficult to slip down into the bottle, then you can apply vegetable oil around the neck of the bottle. Greasing oil helps the egg to move into the bottle easily.

Are you surprised watching an egg going into the bottle without any help from external forces? Do you want to learn that magical science trick? Then, let us discuss how this simple science activity worked out very well.

The Science Concepts behind The Egg in a Bottle Experiment

Air is a matter of substance, and hence it contains weight and other assets like density and pressure.

Generally, the air surrounding us or objects does not show any pressure because it surrounds with equal pressure.

But when there is additional pressure in the air, it starts showing its pressure through moving objects by push and pull trials.

In this science activity, we will observe that air shows its pressure when the opportunity is given.

Egg moving into the bottle without touching by external sources proves that air pressure is acting upon it. Let us discuss it in detail.

Before the experiment begins, the pressure of the air surrounding and inside the jar is the same as it is equally distributed.

That means the pressure inside and outside the glass bottle is the same at the beginning of the experiment.

But when we placed the burning paper into the glass bottle, the air inside the jar starts to expand. Because air molecules expand when it gets warmed up, and this is the specific characteristic of air.

And as soon as the egg is placed upon the opening of the glass bottle, the fire goes off, and the air molecules begin to cool down.

As the air molecules cool down, they start contracting themselves by lowering the air pressure inside the glass bottle.

That means there is a difference in the air pressure existing inside and outside the glass bottle.

Because there is less air pressure inside the bottle. The egg slowly squeezes into the bottle as the outside pressure pushes it from outside.

Yes, when the air molecules inside the bottle cool down, it offers more space to welcome additional air molecules.

In this process, the outside air molecules rush into the bottle to fill the spaces. So, it keeps pressure on the egg and helps it slip down into the bottle.

Extension Ideas

You can try out the experiment using other supplies such as boiling water and a balloon.

1) Use boiled water instead of paper inside the bottle and do the experiment

2) Try out using an inflated balloon filled with water in the place of a boiled egg.

Interesting Air Pressure Activities for Kids

Balloon in a Bottle

Crushing Can Experiment

Drip Drop Water Bottle – Science Behind Water Dispenser

Balloon in Hot and Cold Water

Tips to Teacher s

Here are the important questions a teacher can ask to make the students involved completely during the experiment. And to encourage them to participate in revealing and understanding the science behind the experiment.

1) What made an egg move into the bottle without touching it?

2) Why only eggs must be used in this science activity?

3) Are there any other possibilities to change the pressure of the air inside and outside the bottle?

4) Will the egg come out of the bottle again? If Yes, How?

5) What are the properties of air that made the egg move into the bottle?

Safety Measures

As we are dealing with fire, children need to be very careful while performing this activity. It is better to put on their safety guards even though an adult or teacher performs the activity. Adult supervision is a must when a child is performing this activity on his/her own.

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Egg in a Bottle

Activity length, activity type, discrepant event (investigatable).

In this demonstration, students will use differences in air pressure to force an egg into a bottle.

Air expands when it is heated. If air is heated in a container that prevents expansion, the pressure of the gas increases. When the heat source is removed, the air will contract and decrease in pressure. In a container, this causes the outside air particles to push into the container to equalize the pressure inside and out. Air always flows from a high-pressure system to a low-pressure system ("air flows from high to low").

In this demonstration, the lit matches heat the air inside the bottle. When air is heated it expands and some of it escapes out the bottle. When the matches go out, the air inside the bottle cools and contracts (takes up less space), thus creating a lower air pressure area inside the bottle than outside. Normally, the higher-pressure air outside the bottle would come rushing in to equalize the lower-pressure air in the bottle. The problem is that the egg is in the way. The air molecules on the outside of the bottle push the egg into the bottle.

Teacher Note:  The air pressure does not decrease due to the burning of the oxygen inside the bottle. It is due to the air expanding and contracting. If students believe 'using up oxygen' is what causes the egg to be sucked into the bottle challenge them to design an experiment to prove or disprove this theory. 

Describe the characteristics of air.

Explain how air pressure works.

Discuss how air pressure affects our daily lives.

Per Demo or Class: 1 glass bottle with the opening slightly smaller than the hardboiled egg (milk or juice bottles work well) 1 peeled hard-boiled egg matches vegetable oil (optional)

Key Questions

• How can we get the egg into the bottle without chopping it up?
• Why is an egg suitable for this experiment? Could we use a ping-pong ball or a golf ball?
• Does the egg get “sucked” into the bottle? Why or why not?
• How else could you change the pressure of the air inside the bottle?
• How will we get the egg out? How do we increase the pressure inside the bottle?

Preparation

• Hard boil a medium sized egg and peel it.
• Grease the mouth of the bottle with vegetable oil (optional).
• Place the glass bottle on the table.
• Set the egg on the neck of the bottle to demonstrate that the egg cannot be pushed into the bottle (this is because the air inside is trapped).
• Light 3 matches at once and drop them into the bottle.
• Quickly place the egg over the mouth of the bottle. The egg will get sucked into the bottle.
• To get the egg out of the bottle, turn the bottle upside down and blow into it, so that the egg acts as a one-way valve. The increased air pressure in the bottle will cause the egg to pop back out.

Teacher Tips:

• Water can be used on the bottle’s mouth instead of oil, but ensure that the inside of bottle isn’t wet though, as this will put out the flame.
• Instead of lighting a match, you can roll up one sheet of paper towel into a stick/tube shape. Then, light one end of the “stick” with a match and drop it into the bottle.
• During step 2 be careful not to break the egg as then air will be able to escape (you can substitute the egg for a small balloon to allow kids to really try to push a balloon into a bottle)
• Repeat this experiment with an “upside-down twist”: 1. Carefully hold the wider end of the egg in one hand and slowly push two birthday candles into the narrow end of the egg. 2. Light the candles and sing happy birthday to the egg. 3. Turn the bottle upside-down and slowly move it into position above the flaming candles. 4. Allow the flames to heat up the air inside the bottle for just a few seconds and then place the bottle down over the candles. The candles will go out and the egg will squeeze up into the bottle with a “Pop!” Repeat this experiment with boiling water (a good way to prove that 'using up oxygen' is not the cause): 1. Pour the boiling water into the bottle. 2. Carefully roll the water around in the bottle and then pour it out. 3. Quickly put the egg back on the neck of the bottle and wait for it to get pushed into the bottle. Draw a diagram of the setup 1) before the matches were lit, 2) after the matches were dropped, and 3) after the matches went out. Indicate the relative areas of high and low pressure. Show with arrows the flow of high-pressure air trying to equalize low-pressure air.

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Jeff is a senior graphic designer at Science World. His illustration work has been published in the Walrus, The National Post, Reader’s Digest and Chickadee Magazine. He loves to make music, ride bikes, and spend time in the forest.

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Michelle is a designer with a focus on creating joyful digital experiences! She enjoys exploring the potential forms that an idea can express itself in and helping then take shape.

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From Canada, Ty was born in Vancouver, British Columbia in 1993. From his chaotic workspace he draws in several different illustrative styles with thick outlines, bold colours and quirky-child like drawings. Ty distils the world around him into its basic geometry, prompting us to look at the mundane in a different way.

Western Dinosaur

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The Rubber Egg!

September 5, 2013 by Sarah 21 Comments

This science experiment for kids is a crowd pleaser.  Making a hard boiled egg bounce is very impressive.  Even very small children know that eggs crack when broken – well imagine their surprise when, through this science experiment, you turn a hard boiled egg into a bouncy ball!  This was day 5 of our Science Experiments for Kids.   Check here for Day 1 (leaves) , Day 2 (states of matter) , Day 3 (insects) , and Day 4 (ice)

Even better – this science experiment is oh so simple.   The only thing is that it takes 5 days.  So you better get started now!

Hard boiled egg

Small Jar with a lid

This science experiment for kids is great – they can do it all!  Let your hard boiled egg come to room temperature.  Place it in the jar and pour the vinegar until the egg is submerged. 

Have your wee one watch – what can be seen ?  Little bubbles are likely surrounding the egg.  This is the acid in the vinegar attacking the calcium in the egg shell.

Put the lid on your jar and wait 5 days.

Wait, wait, wait

After the long awaited 5 days, your egg-a-licious science experiment can continue.  Gently rinse the egg with warm water to wash away the shell.  Notice how soft it is.

Finally, let your little one bounce the egg.  Isn’t it impressive?!  See how high it can go!

The science behind this science experiment for kids:

The acid in the vinegar eats away at the calcium in the egg shell, creating a rubbery egg.

This science experiment is a great way to show kids the importance of caring for their teeth and brushing regularly! 

The science behind this experiment is likely too complex for toddlers and preschoolers, but I still think it is a great science experiment for kids.  It is very important that kids see and learn neat and interesting things and we help them maintain their natural curiosity and wonder for the world around them.  Sometimes a little magic and mystery is just what is needed!

Please consider liking us on FACEBOOK so we can share more creative learning activities with you and your little ones!  Thank you!

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November 1, 2013 at 8:55 pm

How long can keep the bouncy ball/egg? Does it go bad?

November 1, 2013 at 9:09 pm

What a great question Erin … And I am afraid I don’t know! Ours lasted one week before it finally split. I assume it would last a long time – as it has been preserved in the vinegar. I think it would likely split before going bad … It does bounce and works well, but certainly doesn’t hold up like a real ball.

December 20, 2014 at 8:23 pm

Well, if I would have paid attention first I would have seen and read and had to wait 5 days to get a “splat” effect. I didn’t read the “hard boiled” egg part, I read egg…. SO, my son and I put an egg in a jar for 5 days with vinegar…… The egg became rubbery on the outside of the egg and part of the inside and the vinegar even at the shell off…. BUT not it all so we got a splat effect… NOW to try it with a hard boiled egg.. Wish us luck. I will post how that turns out with the correct instructions. 🙂

December 31, 2014 at 1:10 pm

Oh no Samantha! But a cool science experiment all the same 😉 Hopefully you have success with your hard boiled egg – please let me know!

December 31, 2014 at 5:21 pm

I tried it the right way…. It didn’t work. It splatted on the floor and wouldn’t bounce. What did I do wrong?

January 7, 2015 at 7:49 am

Oh shucks Samantha!! Sorry to hear. Did you hard boil the egg? If so, perhaps try to leave it in the vinegar even longer to ensure the chemical change has time to occur.

February 27, 2016 at 6:53 pm

When it eventually goes “splat” does it make a huge mess like a regular egg?

February 27, 2016 at 9:17 pm

Hi Kyah – important question! No, it makes a mess for sure, but sort of the same mess you would expect from throwing a hard boiled egg on the ground.

April 19, 2016 at 6:20 pm

Mine worked really good such a good idea. I also seen that you can add some food coloring and it changes that color that you added

April 19, 2016 at 8:12 pm

Neat idea about adding the food colouring Marlee – we will have to give this a try! Glad yours worked well – thank you for taking the time to comment!

April 2, 2018 at 2:09 pm

I’m about to try this with some of our Easter eggs since we colored 3 dozen and there are only three in my family!! 🙂 Should come out a colored bouncy ball I’m hoping right? I also want to try with a yellow highlighter to make a glowing ball. I’m not sure if this particular experiment shows kids osmosis. I guess so. It’s easier to think about membranes and liquid transferring when there is more water to exchange.

April 6, 2018 at 11:18 am

This sounds so neat. Please let me know how it turns out!

May 16, 2016 at 10:59 pm

We tried this for three days it did not work we opened the containers twice a day and we stored them in a fridge that was not running my question is does it matter where the eggs are keep or if we open the containers?

May 20, 2016 at 10:39 pm

Hmmm – I don’t believe either of those things should matter – but I bet leaving it even longer will work.

July 6, 2016 at 6:29 am

It’s wonderful.Nice You pls share some more experiments like this.

January 21, 2018 at 5:38 pm

Did you leave the eggs at room temp or in the fridge while waiting?

January 29, 2018 at 10:17 am

Room temperature – I’m not sure if it matters though?

April 1, 2018 at 2:17 am

What are the states of matter in this experiment

April 6, 2018 at 11:19 am

Great question Destiny. I would say that the egg begins as a liquid (at least the interior of the egg) and turns into a solid. Would you agree?

March 28, 2020 at 10:04 pm

The science behind this experiment is likely to complex for toddlers and preschoolers, but I still think it is a great science experiment for

The word “to” in that sentence should be spelled: “too.”

April 14, 2020 at 8:50 pm

Oh great catch on the typo Wendy – thank you! The science is too tricky for little ones, but a great experiment to help keep those curious little minds full of wonder!

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Science Fun

Find A Hard Boiled Egg Force And Motion Science Experiment

In this fun and easy force and motion science experiment for kids, we’re going to try and find a hard boiled egg. 

• Two raw eggs
• One hard boiled eggs

Instructions:

• Spin each of the eggs and observe what happens.
• Two of the eggs will wobble but one will spin. The egg that spins is the hardboiled egg.
• Now lightly touch each egg as it spins.
• The hardboiled egg will stop spinning but the raw eggs will continue to move.

EXPLORE AWESOME SCIENCE EXPERIMENT VIDEOS!

How it Works:

Inertia will cause the loose yolks and whites of the raw eggs to continue trying to move.

EXPLORE TONS OF FUN AND EASY SCIENCE EXPERIMENTS!

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previous experiment

Next experiment.

Bottled Egg Trick

First get permission to use kitchen equipment and eggs. Then put the bottle in the bowl of hot water for about five minutes.

Move the bottle to the bowl of ice water. Wet the egg and place it pointed side down in the bottle opening. As the air inside the bottle cools, the egg will slowly move into the bottle.

To remove the egg, hold the bottle upside down so the egg is near the opening. Blow hard into the bottle with your mouth tight against the opening. Point the bottle away from you: The egg flies out!

WHAT'S HAPPENING?

Hot air expands. Cold air contracts. When the air inside the bottle is heated, the molecules, or tiny air particles, inside the bottle spread out, increasing air pressure. As the air in the bottle cools, the air pressure decreases. The greater outside air pressure pushes the egg into the bottle. Blowing into the bottle raises the air pressure again. The air and the egg rush out of the bottle.

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How things work, learn about plastic and how to reduce your use., science lab.

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Is the Egg Hard Boiled or Raw Science Experiment

Did you know that you can use science to determine if an egg is hard-boiled or raw without cracking the shell? It’s true! Just give the eggs a spin and observe what happens next!

In this easy science experiment, kids can make a hypothesis, observe inertia in action, and discover the science behind what makes it work.

Bonus, this experiment also comes in handy if you can’t remember which eggs in your fridge are hard-boiled and which ones aren’t!

JUMP TO SECTION: Instructions | Video Tutorial | How it Works | Purchase Lab Kit

Supplies Needed

• 1 Hard-Boiled Egg

Hard Boiled or Raw Science Lab Kit – Only $5

Use our easy Hard Boiled or Raw Science Lab Kit to grab your students’ attention without the stress of planning!

It’s everything you need to  make science easy for teachers and fun for students  — using inexpensive materials you probably already have in your storage closet!

iS The Egg Hard Boiled Science Experiment Instructions

Step 1 – Prepare a bowl of 3 eggs, 2 raw eggs, and 1 hard-boiled egg. Take a moment to make some observations about the eggs. Do they look the same? Do they feel the same? Can you notice any difference in the eggs? Take a moment to write down your observations. 

Step 2 – Carefully take one egg out of the bowl and spin it on the table. Observe what happens. Does the egg continue to spin or does it stop spinning very quickly? Write down your findings.

Helpful Tip: It is important to spin the egg on a hard flat surface.

Step 3 – Next, repeat with the other two eggs. Observing and writing down the behavior each time. When you are finished review your observations. Did the eggs all behave the same? You probably noticed that one of the eggs behaved differently than the other two. This is the hard-boiled egg. Do you know why it behaved differently?

Find out the answer in the how does this experiment work section below.

Video Tutorial

How Does the Science Experiment Work

While the two eggs look and feel the same, there is a big difference in what’s inside the eggs. Inside the raw egg, the egg white and egg yolk are fluid and can move around inside the shell. Inside the hard-boiled egg however, the egg white and egg yolk are solid and do not move around inside the shell.

When you spin the hard-boiled egg, everything moves together and the egg will continue in a smooth spinning motion. However, when you spin the raw egg, the fluid inside moves around and causes the egg to wobble.

When you try to stop the eggs from spinning by slightly touching them, the hard-boiled egg easily stops spinning, but the raw egg will keep turning a little bit. When you try to stop the raw egg, your touch stops the shell, but the fluid inside the egg continues to move, which causes the egg to remain spinning.

The raw egg’s resistance to stopping spinning is a great example of inertia. Inertia is the tendency of an object to resist a change in motion. The inertia of the raw egg is greater than the inertia of the hard-boiled egg. Inertia is the reason you keep moving forward when a vehicle stops suddenly.

More Science Fun

Enjoyed this egg-citing experiment? Then you’ll want to try your hand at these other egg science experiments.

• Egg in a Bottle – Use a little science magic to get the egg into the bottle without touching it.
• Floating Egg – Eggs naturally sink, but we make them float. Find out how and then give it a try.
• Bouncy Egg – Remove the shell from a raw egg and make it bounce!

I hope you enjoyed the experiment. Here are some printable instructions:

Hard Boiled Egg Science Experiment

• Two Raw Eggs
• One Hard Boiled Egg

Instructions

• Prepare a bowl of 3 eggs, 2 raw eggs and 1 hard boiled egg.
• Take one egg out of the bowl and spin it on the table. Observe what happens. Does the egg continue spin or does it stop? Helpful Tip: It is important to spin the egg on a hard flat surface.
• Next, repeat with the other two eggs. Observing the behavior each time. One of the eggs behaved differently than the other two. This is the hard boiled egg.

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Enjoy our range of fun science experiments for kids that feature awesome hands-on projects and activities that help bring the exciting world of science to life. Surprise your friends and family with an easy science experiment that answers an otherwise tricky question. Two eggs look and feel the same but there is a big difference, one is raw and the other hard boiled, find out which is which with this fun experiment.     The raw egg's centre of gravity changes as the white and yolk move around inside the shell, causing the wobbling motion. Even after you touch the shell it continues moving. This is because of inertia, the same type of force you feel when you change direction or stop suddenly in a car, your body wants to move one way while the car wants to do something different. Inertia causes the raw egg to spin even after you have stopped it, this contrasts with the solid white and yolk of the hard boiled egg, it responds much quicker if you touch it. This is a good experiment to test a friend or someone in your family with, see if they can figure out how to tell the difference between the eggs (without smashing them of course) before showing them your nifty trick.   Science Kids ©  |     |     |     |     |     |     |     |     |     |     |     |     |     |  Updated: Oct 9, 2023 Choose an Account to Log In Notifications Experiment with boiled egg science. In kindergarten science, kids are often introduced to a topic that they’ll continue to study in many forms for years ahead: the changing states of matter. They’ll learn, for instance, how when you heat ice it melts into water and then eventually turns into gas. But, of course, that’s not true for everything in nature. Take eggs, for example, which are used constantly in cooking. Try this science exploration with your kindergarten scientist, and help her explore the changing states of matter which transform an egg from raw to soft to hard-boiled. What You Need: Three whole eggs Three bowls Small saucepan with boiling water Kitchen timer What You Do: Tell your child that you will explore some basic principles about eggs and how they can change. Start by checking her understanding: what will happen if you leave an egg in a bowl and don't touch it? What's inside? What happens if you put the egg in boiling water? (Warning: be prepared to explain that the eggs you buy at the store are not the kind with real chicks inside, so if you boil them you aren't hurting any creatures!) Invite your child to help you crack one egg into one bowl, and observe what happens. Name the parts—yolk and white—for your child if she doesn't already know them well. Leave them on the counter during your next phase, but check back now and then: has anything changed? Now heat up your boiling water, and gently place the other two eggs into it. Have your child watch you, and observe the eggs while staying a safe distance from the heat. Your child can also help you set the timer for three minutes. After three minutes, leave one egg to boil longer (set the clock for another twelve minutes), and pull out the other egg. Ask your child, "What do you think this egg will look like if I open it? Will it look like the one in the bowl?" (You can tell your child that that egg is a “control” in this experiment.) Since the egg is hot, you'll need to help with the next step. Take a knife, and split the egg into a second bowl. It will be a “soft boiled” egg—the egg white will have turned an opaque clear white, and the yolk, while still soft, will be more firm! And all this happened with just the addition of heat. By now, you should be ready to pull out the final egg. Again, ask your scientist to make a hypothesis about what she expects might have happened. Then split the final egg. Presto! It's a hard-boiled egg! Working together, observe what has changed now. What happened? Heat changed the “state” of the egg, and it will never change back. Why? Eggs are full of protein, and when you heated them, the proteins “unwound” in a process called “denaturing,” and recombined tightly. They're still the same substances that started in the egg—nothing came out and nothing was added—but the heat changed how they were put together. What next? Eating, of course! You do want to make sure you cook the raw egg –it should not be consumed without being scrambled, fried, or added to some cooked concoction, lest you land your child with some bacterial bug. But the other two dishes are classic “comfort food.” Try cooking up some toast and serving your soft boiled egg on top, or perhaps mixing some mayonnaise into your hard boiled egg yolk to make a deviled egg. Science is all around us—even inside our tummies. Related learning resources Add to collection, create new collection, new collection, new collection>, sign up to start collecting. Bookmark this to easily find it later. Then send your curated collection to your children, or put together your own custom lesson plan. 253 IMAGES Is the Egg Hard Boiled or Raw Science Experiment Is the Egg Hard Boiled or Raw Science Experiment Egg in a Bottle How to Tell a Hard Boiled Egg from a Raw Egg Science Experiment Science Egg Science Experiment: Here’s a classic science experiment that is VIDEO Never Hard Boil Eggs Again! 2 easier ways to make hard eggs for Easter coloring and recipes Difference Between Raw And Boiled Eggs Science Experiment #billminglabs #science #egg #shorts Raw or Boiled Egg Boiled Egg Exploding 🥚#lifehacks #experiment #shorts The Science of Cooking Perfect Hard-boiled Eggs How To Cook PERFECT Eggs EVERY Time! How LONG To Cook Hard Boiled Eggs?! COMMENTS Egg in a Bottle Science Experiment Adult supervision is required. Step 4 - Once the paper is burning, carefully but quickly drop it into the glass bottle. 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It's a brilliant method of teaching just how powerful air pressure can be and the trick is also a great way of messing with your students. WHAT YOU NEED Use the match to light one strip of paper on fire. Find a hard-boiled egg that is the correct Egg in a Bottle Science Experiment A hard-boiled egg. Matches or a strip of paper. Vinegar (optional) A lighter (optional) Methodology. Begin by hard-boiling an egg and allowing it to cool down completely. Make sure the egg is hard-boiled, as a raw egg could make a mess if it breaks inside the bottle. Take the glass bottle and remove any labels or obstructions from the opening. Egg in a Bottle Experiment A clear, empty container with a narrow top. Very hot water. Hard-boiled egg (peeled) First, you will boil water. I put 4 cups of water in a Pyrex measuring cup and microwaved it for about 5 minutes. It was piping hot! Then, you will pour the hot water into the empty container. 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Then, keep it aside on the experiment table. Step-1: Place a clean and transparent glass jar on the experiment table. And then pick a piece of paper and burn it using a lighter. Egg in a Bottle Repeat this experiment with boiling water (a good way to prove that 'using up oxygen' is not the cause): 1. Pour the boiling water into the bottle. 2. Carefully roll the water around in the bottle and then pour it out. 3. Quickly put the egg back on the neck of the bottle and wait for it to get pushed into the bottle. The Rubber Egg! This science experiment for kids is a crowd pleaser. Making a hard boiled egg bounce is very impressive. Even very small children know that eggs crack when broken - well imagine their surprise when, through this science experiment, you turn a hard boiled egg into a bouncy ball! This was day 5 of our Science Experiments for Kids. Find A Hard Boiled Egg Force And Motion Science Experiment In this fun and easy force and motion science experiment for kids, we're going to try and find a hard boiled egg. Materials: Two raw eggs One hard boiled eggs Instructions: Spin each of the eggs and observe what happens. Two of the eggs will wobble but one will spin. The egg that spins is the hardboiled egg. Now…Read More Eggs-Periments: Bottled Egg Be sure to hard boil the egg for this experiment. Photograph by Anjelagr, Dreamstime. ... Unauthorized use is prohibited. Bottled Egg Trick. You Will Need. One peeled, hard-boiled egg; Plastic or glass bottle with an opening slightly smaller than the egg; Large bowl of hot water; Large bowl of ice water ... Science Lab. Get science experiments ... Egg in a Bottle Egg in a Bottle. You don't have to be an egghead to know that science can be fun. Show your child a trick where the ordinary becomes extraordinary! 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How to Make the Perfect Hard Boiled Egg:: A Science Experiment Bring 2-3 inches of water to boil in a pot. Place raw eggs in a steamer basket on top of the boiling water. Eggs should only be in one layer, not piled on top of each other. Cover the steamer basket. Depending on the consistency desired, cook anywhere from 8 minutes (soft boiled) to 20 minutes (very hard boiled). Experiment with Boiled Egg Science Take eggs, for example, which are used constantly in cooking. Try this science exploration with your kindergarten scientist, and help her explore the changing states of matter which transform an egg from raw to soft to hard-boiled. Download free activity. Add to collection. essay homework paper phd project resume review study thesis