Kinetic Molecular Theory

Today we learnt about the kinetic molecular theory. I find it interesting (as I do for all science) that the concepts I learnt in Primary school can be further explained with this theory.

In the kinetic molecular theory:
Expansion happens due to the molecules gaining enough energy to vibrate faster and faster, until the molecules gained enough heat energy to weaken the intermolecular forces and break away. This can also explain the changes of state
(Solid -> Liquid -> Gas)

Molecules are so tiny. tiny little things that can only be seen with an electron microscope. Sidetracking.

Also, kinetic molecular theory can explain a host of other things, such as forces and other scientific phenomena.

OK, that should be enough!