How to do egg in a bottle science experiment

This classic kitchen science experiment will amaze your kids. Can you figure out why the egg gets sucked into the neck of the bottle?

You will need:
1 x hard boiled egg
1 x glass bottle with a wide neck (just wide enough to sit the egg in)
Boiled water from the kettle

Pour boiling water into the bottle to about a third of the way up.

Place the hard boiled egg so that it sits in the neck of the bottle.

Watch and wait. You will notice the egg gets shifted by the hot air in the bottle, this is when the hot air expands and escapes a bit.

The egg will eventually get sucked into the bottle.
Why is it so?

The hot air from the hot water expands and forces its way out of the bottle, making the egg shift around.

As the air cools inside the bottle the air contracts and takes up less room. This creates lower pressure inside the bottle than outside. The greater pressure outside the bottle forces the egg into the bottle.
Hints and tips:

To get the egg back out of the bottle, tilt the bottle and blow air into it. Watch out though, because the egg will shoot out of the bottle!

Be sure to visit the Kidspot website for fun activities for kids, easy crafts, rainy day activities, dress ups, colouring pages, party games and science experiments

[saimakarim]

Your experiments are amazing. I would love to see them coming in this pandemic time because these videos are going to help so many parents who are homeschooling their kids.

[esmockingjay]

This is a cool experiment. Just wondering how you get the egg back out of the bottle? You can also use matches instead of hot water.

[mattcasdorph]

Its not fake as some think. But they neglect to mention that egg has no shell which allows the boiled egg to change just enough shape to be pulled through by the vacuum the bottle has from the cooling air.

[sarahjbeardsall]

This was really helpful for homework, thank you <3

[thalovemuscle]

That's what I'm going to do for my science project know

[kellymorehouse]

I tried this with my grandchildren and used an old milk bottle. As I was pouring in the boiling water the bottle split and my granddaughter and I were burnt. I think it has to be a Pyrex type bottle or a beaker.

[janellecollier]

This is for school I sed I wool did I how can a egg fit though a boottle

[wraRjesuschrist]

guys i tried this and now my egg is stuck in the glass bottle. how do i get it out??? please its urgent

[ffytgm]

How idiotic and annoying is it to switch camera angles just when the action is happening at 0:44.

[alejandroable]

Is it because it a big cell still? The egg.