Solids, liquids and gases are called the three states of matter. Liquids can flow or be poured easily. They are not easy to hold. Liquids change their shape depending on the container they are in.

It turns out that any material, no matter what it is made of, can exist in one of three ... for example. This basic model is, however, just that: there are many, many more states of matter out ...

For example, we walk through the air when we're walking about during our day. Mostly we cannot see this air or even feel the air. The three states of matter (solids, liquids and gases) are all ...