1. Physical and Chemical Changes

2. Objective: Chemical/Physical Change: Differentiate
The learner will be able to distinguish between a physical and chemical change.

3. Matter Matter is everywhere.
Matter is anything that takes up space and has mass.
Matter is constantly experiencing both chemical and physical changes.

4. What is a Physical Change?
A physical change alters the form of a substance, but does not change it to another substance.
Example:
Making Orange Juice

5. What is a Chemical Change?
When a substance undergoes a chemical change, it is changed into a different substance with different properties.
Example:
Baking a Cake

6. 5 Signs of a Chemical Change
Color Change
Precipitation

7. Precipitation
Precipitation – the solid that forms from a solution during a chemical reaction.
It looks like a cloudy solid in an otherwise clear solution.

8. 5 Signs of a Chemical Change
Gas Production
Temperature Change

11. 5 Signs of a Chemical Change
Changes in Characteristic Properties (odor, light given off)

12. Chemical or Physical Change?
Cutting paper?
Physical

13. Chemical or Physical Change?
Ice melting?
Physical

14. Chemical or Physical Change?
Toast burning?
Chemical

15. Chemical or Physical Change?
Rocket fuel burning?
Chemical

16. Chemical or Physical Change?
Sawing wood?
Physical

17. Chemical or Physical Change?
Metal rusting?
Chemical

18. Chemical or Physical Change?
Disappearing puddle?
Physical

19. Chemical or Physical Change?
Candle burning?
Chemical

20. Chemical or Physical Change?
Dry ice?
Physical