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Egg in a Bottle - A SICK Science Experiment

Use air pressure to squeeze a hardboiled egg through the mouth of a bottle.

Rating: 54321

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With just a few household items, we can show you how a hard-boiled egg can squeeze right through the mouth of a bottle. The Egg in a Bottle Trick is a science classic, dating back at least a hundred years. 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 friends. We won't stop there, we'll also show you how to perform a gravity defying version of the trick… it's an "eggsclusive" upside-down twist!



  • Egg in the Bottle Trick - Sick Science! #113
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How Does It Work?

In the traditional version of the Egg in the Bottle experiment, the burning piece of paper heats the molecules of air in the bottle and causes 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 wiggles on top of the bottle). When the flame goes out, the molecules of air in the bottle cool down and move closer together. 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 “push” or pressure of the air molecules outside the bottle is so great that it literally pushes the egg into the bottle.
In the Upside-Down Twist, the science is the same as the traditional Egg in the Bottle trick, but the whole thing is just inverted. It's a nice twist on a classic science demonstration… and it looks like the egg is defying gravity! Now that will mess with your friends.

Customer Reviews

science Review by miranda

I'm doin a project in science on how science doesnt suck things in. this goes with it perfectly!

(Posted on October 8, 2011)

Friendly Experiment Review by Leidys

This is amazing! I'm doing it and it's a lot of fun. Also when I watched the video it was really amazing how the egg came out :)

(Posted on November 22, 2009)

Consider including in the directions... Review by Heather R.

1) A notation to peel the egg.
2) A more detailed direction on how to (or not) blow into the flask in order to retrieve the egg.

Fortunately, we tried this out with colleagues prior to classroom exposure. The grand finale of the attempt to remove the egg is linked via YouTube. Don't try this at home, kids, nor without safety goggles.

Heather -
Wow... that sure was an explosive ending. Thank goodness everyone is okay! We've passed the information along to our experiment team and the information you suggested has been updated. Thank you so much for your feedback and letting us know about the oversights.
- Steve Spangler Science Web Team

(Posted on February 18, 2013)

egg in the bottle trick Review by pooh

okay my science teacher is doing this experiment and we have to find out the reason for the egg falling in the bottle and this goes perfectly with it! thanks for making this video it helped so many people :D

(Posted on September 11, 2012)

Egg into the bottle with fire Review by Sally

It really works!!!!!!!!!!!!!!!! My kids loved this experiment!!!

(Posted on October 10, 2009)

Always a hit! Review by Laura

Kids AND adults love this. I have also done it with a glass widemouth salad dressing bottle. If you don't want to worry about the flame inside the bottle you can also use rubbing alcohol and drop the lighted match in the bottle. The flame goes out and the egg sucks right in.

(Posted on October 4, 2009)

Great Project!!! Review by Pat

My son did this project in the eighth grade and he made an A on it. He now has a project due in the tenth grade and he wants to do this one again. We loved it so much that we are about to do it AGAIN!!! Simply awesome!!!

(Posted on January 8, 2012)

AWSOME EXPEREMENT Review by Christ Lopez

This experement was and is really cool. i just tried it and its really easy to do.

(Posted on May 29, 2011)

LOVE IT!!!!! Review by babay

i remember that i did this trick in 3rd grade!!!!!!

(Posted on October 22, 2012)

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