The state of matter is a deceptively simple concept. It turns out that any material, no matter what it is made of, can exist in one of three forms: solid, liquid or gas. These are categories of ...

Find out all you need to know about states of matter here in our online science lab. The interactive activity lets you see what happens when different substances change state. There are three main ...

The three states of matter can be represented by the particle model. This model explains the properties of substances in their different states, as well as changes of state. Interactive activity ...