In science we use models to represent the world around us. The particle model is essential in understand how 'stuff' behaves and everything in chemistry!

Choose your topic:

• Density [FREE] - The amount of 'stuff' in a given space

​

• The Particle Model [FREE] - This explains a lot

​

• States of Matter - Solids, liquids and gases, and changing from one to another

​ 

​