1. How to tell the difference Physical and Chemical Changes

2. Physical Change Substance may seem different, but the way the atoms link up is the same.

3. It’s a physical change if It changes shape or size It dissolves.

4. It changes phase (freezes, boils, evaporates, condenses) It’s a physical change if...

5. Changes the way the atom molecules link up Makes new substances Chemical Change

6. It’s a chemical change if…. It burns Temperature changes (gets hot or cold all by itself)

7. It’s a chemical change if... It bubbles (makes a gas)

8. It’s a chemical change if... It changes color

9. What kind of change is it if someone... Tears up paper? Physical change Mixes salt and water? Physical change

10. What kind of change is it if someone... Burns paper? Chemical change Leaves a bike outside and it RUSTS? Chemical change

11. What kind of change is it if someone... Mixes vinegar and baking soda? Chemical change