2D Gas Model.

Gassim - KE computer simulaation

Concepts demonstrated :

• kinetic properties of a gas

Equipment needed :

• model
• power supply
• CCD camera linked to television so that it is easy for students to see in a lecture theatre

• Connect a power supply to the apparatus.
• Place the model in front of the CCD camera.

None.

Physics involved :

Demonstrates the kinetic nature of particles in a gas. Shows that if you add more energy the particles become more active. You could also show the behaviour as a liquid if you only use low voltages.

How to use the Demonstration :

• Use in a lecture where you are trying to demonstrate the kinetic nature of particles in a gas.
• You can also show that as you apply more energy to the system that the kinetic energy of the individual particles increases. This is shown by the piston in the model moving higher up.
• Link this demonstration to computer programmes which also demonstrate the kinetic nature of gas molecules.
• Use in conjunction with the 3D gas model.

• Make a new larger model that is easier to see in a lecture theatre - perhaps a square perspex box, 20cm x 20cm x 20cm with ball bearings.

• This model should be replaced by a larger, more easy-to-see model e.g. ping pong balls in a 1m perspex box, with a vacuum cleaner in reverse to provide the air through holes in the bottom of the box.