Egg In A Bottle

Purpose:

To put an egg into a bottle and take it out intact using the properties of air pressure.

Additional information:

Variations in air pressure has widespread effects on every facet of our lives. While this phenomenon governs changes in weather, it also determines a variety of aspects pertaining to aerodynamics which are vital to modern day living.
Required materials
Egg
Bottle
Matchbox and matches
Estimated Experiment Time
Approximately 15 minutes

Step-By-Step Procedure:

1. Boil the egg until it becomes hard-boiled (simmer for approximately 5to 7 minutes after the water comes to a boil)
2. Cool and remove the shell of the hard-boiled egg
3. Place the empty bottle on a flat surface
4. Drop a burning match into the bottle just before placing the egg on the mouth of the bottle
Note
Use a bottle with a mouth that is narrower than the girth of the egg.

Observation:

The hard-boiled egg gets sucked into the bottle. On blowing into the bottle holding it upside down so that the egg falls into its neck, the egg pops out.

Result:

The varied effects of variations in air pressure are clearly demonstrated here. By dropping a burning match into the bottle just before placing the boiled egg on its mouth, the flame burns up all the oxygen inside the bottle. This in turn creates a vacuum inside the bottle that sucks the egg into the bottle.