1. Physical and Chemical Changes

2. Physical Change
Physical changes occur when matter changes its property but not its chemical nature.

3. It’s a physical Change if…
It changes shape or size
It dissolves.
Any Mixture
It changes phase (freezes, boils, evaporates, condenses)

4. Physical Change

5. Chemical Change
Chemical changes occur when matter undergoes a chemical reaction and become a new substance(s).

6. It’s a chemical change if…
It burns
The color changes
Bubbling and fizzing occur
A precipitate forms
Cook/Bake
Decomposes/Rotts

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. Set up the bottom of your paper like this:
Physical Changes
Chemical Changes
Glass Breaking
Mowing the Lawn
Fresh Lemonade
Ice Melting
Cracking Eggs
Boiling Water
Slicing Bread
Baking a cake
Digesting food
Toast
Rusty nails
Fireworks
Roasting marshmallows
Lighting a match
Frying an egg

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

10. OOPS! Did it change size, color, shape (Physical Change)? or
Did it become different matter (Chemical Change)?

11. Correct!

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

13. OOPS! Did it change size, color, shape (Physical Change)? or
Did it become different matter (Chemical Change)?

14. Correct!

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

16. OOPS! Did it change size, color, shape (Physical Change)? or
Did it become different matter (Chemical Change)?

17. Correct!

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

19. OOPS! Did it change size, color, shape (Physical Change)? or
Did it become different matter (Chemical Change)?

20. Correct!

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

22. OOPS! Did it change size, color, shape (Physical Change)? or
Did it become different matter (Chemical Change)?

23. Correct!

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

25. OOPS! Did it change size, color, shape (Physical Change)? or
Did it become different matter (Chemical Change)?

26. Correct!

27. Is it a chemical or physical change?
Lighter fluid burining
Chemical Change
Physical Change

28. OOPS! Did it change size, color, shape (Physical Change)? or
Did it become different matter (Chemical Change)?

29. Correct!

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

31. OOPS! Did it change size, color, shape (Physical Change)? or
Did it become different matter (Chemical Change)?

32. Correct!

33. Is it a chemical or physical change?
An egg breaking
Chemical Change
Physical Change

34. OOPS! Did it change size, color, shape (Physical Change)? or
Did it become different matter (Chemical Change)?

35. Correct!

36. Sorting activity Place the ‘Chemical Change’ on the left desk
Place the ‘Physical Change’ on the right desk
Sort your words into the correct categories.
Make a T chart on your paper that reflects what you did

37. Ticket out the door
Write a paragraph about the difference between a chemical and physical change. Give examples of each.