How are gases like liquids; how are they different? This clip demonstrates the state of matter called gas. We find out how the properties of gas are similar and different to the properties of liquid. An experimental demonstration and...

The video shows the apparatus used by Joseph Priestley for studying the properties of different gases. The visualization is based on the frontispiece of Experiments and Observations on Different Kinds of Air written by Priestley from...

This video segment adapted from ZOOM offers a clever demonstration of buoyancy by showing how to pour a cup of air into a cup filled with water. [1 mim, 42 sec]