1. Physical and Chemical Changes

2. Physical Change
Physical changes occur when matter changes its properties but does NOT change the composition.
Changes what it looks like
Physical changes can be “undone”

3. Physical changes in matter
Choose 3 Examples for your notes
Freezing
Dissolving
Cut
Folded
Shape
Size
Texture
State of matter
Volume
Melting
Mass/Weight
Expected Color Change

4. Physical Change
This is a physical change because water is changed to ice. This is a liquid changing to a solid which is a change in the state of matter only.

5. Chemical Change
Chemical changes are changes matter undergoes when it becomes new or different matter.
Chemical changes cannot be undone
Burning, Rusting and Cooking a common examples of chemical changes

6. 4 signs of a chemical reaction
UNEXPECTED Color Change
Gas Formation
Precipitate Formation
Temperature Change
-Endothermic (inside)
-Exothermic (outside)

7. Chemical Change
A chemical change occurs when fireworks are used. Fireworks are made of metals such as magnesium and copper. These change chemically as they light up the sky.

8. Is it a chemical or physical change?
Sugar dissolving in tea
Chemical Change
Physical Change

9. Correct!
PHYSICAL!

10. Is it a chemical or physical change?
Logs burning
Chemical Change
Physical Change

11. Correct!
CHEMICAL!

12. Is it a chemical or physical change?
Breaking water up by separating it into hydrogen and oxygen
Chemical Change
Physical Change

13. Correct!
CHEMICAL!

14. Is it a chemical or physical change?
Cutting paper
Chemical Change
Physical Change

15. Correct!
PHYSICAL!

16. Is it a chemical or physical change?
Crushing an aspirin
Chemical Change
Physical Change

17. Correct!
PHYSICAL!

18. Is it a chemical or physical change?
Metal rusting
Chemical Change
Physical Change

19. Correct!
CHEMICAL!

20. Is it a chemical or physical change?
An egg rotting
Chemical Change
Physical Change

21. Correct!
CHEMICAL!