Three states of matter

grade 4 lesson on matter

1. Three states of matter

2. Vocabulary 1. solid 2. liquid 3. gas 4. definite volume 5. compressed 6. pressure 7. definite shape

3. Properties of solids, liquids and gas Solids- have definite shape and size. Liquids - do not have definite shape. They take on the shape of the container they are in. Gases - do not have a definite shape. They take on the shape of the container they are in.

4. Solids

5. liquids

6. gases

7. Comparing shapes

8. Comparing volume

9. Comparing shapes

10. Air pressure and liquid pressure Air pressure air is made up of gases. Air pushes on objects around it. Liquid pressure -Liquids push on objects that are placed in them.

11. Application of air and liquid pressure