82 How Things Are Different-Mid

How Things Are Different Written by Katherine Follett

Why are different things made of different stuff? Would you want to wear a wooden shirt? Would a paper hammer pound a metal nail into wood?

The stuff everything is made up of is called matter. Different kinds of matter act in different ways. We use different matter to make different things.

There are three main kinds of matter. One kind is a solid. A solid has its own shape. Wood and metal are solids.

Another kind of matter is a liquid. A liquid takes the shape of what is holding it. Water is a liquid. What are some other liquids? Do You Know? Many things can change from a solid to a liquid. Ice can melt into water. What other things can melt?

The third kind of matter is gas. Gas has no shape. It can change sizes. You cannot see most gases. Air is a gas.