Kinetic Theory Model, B2-2185.55, £63.00
 The Kinetic Theory Model is used along with the Vibration Generator and comprises theoryof piston, steel balls and a base of stainless steel for placing on an overhead projector.
 Moving steel balls representing molecules bombard a plastic piston and suspend a plastic piston. Increasing the frequency of the Vibration Generator increases the average kinetic energy of the molecules - this is analogous to increasing the temperature of a gas. This results in the particles pushing the piston up i.e. the volume of the gas increases with temperature.
 The diagrams opposite represent :
1 Solids
2 Gas under a piston
3 Gaseous state
4 Brownian motion
5 Boiling liquid
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