Home : Structures : Solids
Solids, liquids and gases are all made out of tiny bits and pieces: or particles. Sometimes
the particles are just single atoms, and at other times the particles are collections of atoms
called molecules. Whatever they are made out of, these particles are always moving.
Even the particles in a solid move around - but not much
The particles that make up the solid are always vibrating from side to side and up and
down. If you give a solid some energy then the particles will move around a little bit
more. This is what happens when you heat up a solid piece of wax - give it too much heat
and the solid wax will turn into a liquid (or melt).
The particles in a solid do move - they just don't move from one position to another. The
amount of movement depends on the amount of energy in the particles.