1. Matter is… Anything that has mass and takes up space.

2. Properties Properties describe matter. Properties tell us something about matter.

3. Physical Property Can be observed without changing the substance.

4. Chemical Property Can only be observed during a chemical reaction (while the substance is changing into something new).

5. Physical Change Substance may seem different, but the way the atoms connect is the same.

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

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

8. Ask yourself this… Is it still the same “ stuff ” after the change? If it IS still the same stuff then it is a… Physical Change

9. Changes the way the atoms connect Makes new substances Chemical Change

10. It ’ s a chemical change if…. It burns Temperature changes without heating/cooling

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

12. It ’ s a chemical change if... It changes color It forms a precipitate

13. Ask yourself this… Is it still the same “ stuff ” after the change? If it is NOT still the same stuff then it is a… Chemical Change

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

15. What kind of change is it if someone... Burns paper? Chemical change Evaporates salt water? Physical change

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