Take a glass bottle with a wide mouth, slightly smaller in diameter than a chicken egg. Boil a chicken egg “in a bag”

Take a glass bottle with a wide mouth, slightly smaller in diameter than a chicken egg. Boil a chicken egg “in a bag” and carefully peel it from the shell. Pour hot tap water over the inside of the bottle and immediately place the egg on the neck of the bottle. Explain why the egg is being pulled into the bottle. Try to get the egg out of the bottle without damaging it.

When the bottle was heated, the air pressure inside it increased, then the air began to cool down, its pressure began to decrease, and under the influence of atmospheric pressure (greater than the air pressure in the bottle), the egg began to be drawn into the bottle.