The influence of a vacuum on the volume of a balloon

In this experiment, the influence of the ambient pressure on the volume of a balloon is investigated. A slightly inflated balloon is placed in a desiccator and the external pressure is reduced by evacuating the container with a vacuum pump. This causes the balloon to visibly expand. When the air flows back in, the balloon …

Experiment on the Thermal Expansion of Gases Using a Glass Bottle with a sealing Coin

This experiment visually demonstrates the thermal expansion of gases. A glass bottle is first placed in a cold environment, causing the air inside to cool down. The bottle is then brought into a warmer room and heated with hands. A wet coin placed on the bottle’s opening starts to rattle due to the temperature increase. …