Egg-Eating Monsters

 - by KitchenPantryScientist
It’s easy to create a bottle monster that sucks up hard-boiled eggs! We demonstrated how to make these on Kare11. Click here to watch.
*This experiment requires adult supervision, since it requires the use of a match or lighter.  

You’ll need:

-a glass bottle, like a juice bottle, whose neck is a little smaller than a hard-boiled egg

-small or medium-sized hard-boiled eggs, peeled

-birthday candles

-a long match or lighter

1.  Decorate your bottle to look like a monster, with the mouth of the bottle on the mouth-end of the monster

2.  Put one or two birthday candles in the wide end of a hard-boiled egg.

3. Light the candles and hold them under the inverted bottle to warm the air inside.


4. Hold your bottle upside down and put the candle end of the egg up into the bottle so it forms a seal. Continue to hold the egg until the candle goes out and the egg is “pushed” into the bottle by atmospheric pressure, which is the weight of the air pushing down on the egg.


What happened? 

The flame from the candle heats the air in the bottle. When the candle goes out from lack of oxygen, the remaining air in the bottle cools rapidly, decreasing the air pressure in the bottle and creating a partial vacuum.  The outside air, whose atmospheric pressure is higher, pushes the egg into the bottle as it attempts to equalize the pressure inside of the bottle.

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