Egg in a bottle -

• No volume changing.

• constant volume

• temp - average kinetic energy of the particles.

• pressure is less than the pressure inside the flask.

• the egg was PUSHED/FORCED into the flask.

explanation: The egg in the bottle is am example of Gay - Lusaacs law. The bottle had hot water, which had fast moving molecules that were spread apart. Once the water is dumped and the egg is placed in the mouth of the flask. This makes the volume remain constant. As the temp decreases in the bottle, the molecules move slower and closer together causing less pressure. There is less pressure inside the flask compared to outside, so the egg is pushed/forced into the bottle.