Kinetic Molecular Theory

1.All matter is made up of very small particles

2.These particles are in constant motion

3.There are empty spaces between the particles

4. The particles and spaces are so small that they cannot be seen

5.In a solid, the particles are so close together and move so slowly that they can only vibrate

6.In a liquid, the particles are slightly father apart and move slightly faster than those in a solid

7.In a gas, the particles are far apart and move very quickly

8.Heat and other forms of energy make particles move faster

K.M.T. is Useful Because….

1. It gives a good explanation for the behaviour of matter

2. It tells us that all matter is in constant motion!

Evidence to Support the K.M.T.

Diffusion - the gradual mixing of substances without stirring.