1. Physical and Chemical Changes

2. Table of Contents Add Physical/Chemical Changes
Turn to the next clean page and title it Physical/Chemical Changes

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

4. Physical Change
Physical changes occur when matter changes its property but not its chemical nature.
Physical property changes could include a change in: texture, shape, size, color, volume, mass, weight, and state (melting, boiling, freezing).

5. Physical Property Changes
Texture
Ex: A piece of wood that has been sanded with sandpaper.
It is still wood, only the texture has been changed.

6. Physical Property Changes
Shape
Ex. A piece of paper that has been crumpled up into a ball.
It is still paper, but a different shape.

7. Physical Property Changes
Size
Ex. A piece of cloth that has been cut.
It is still cloth, it is just a different size

8. Physical Property Change
Color
Ex. Painting your fingernails.
They are still fingernails, they are just a different color.

9. Physical Property Change
Change in State
EX: Freezing Water
It is still water, just in a solid state

10. Physical Property Change
Change in State
Ex. Melting wax
It is still wax, just in a different form

11. Physical Property Change
Change in State
EX. Water Boiling
It is still H2O, only in gas state

12. Chemical Change
Chemical changes are changes matter undergoes when it becomes new or different matter.
Most of the time, the matter cannot go back to the original substance.
To identify a chemical change look for signs such as color change, bubbling and fizzing, light production, smoke, rusting or tarnishing.

13. Chemical Property Change
Paper Burning.
Does it produce light, and smoke?
Can you return it to its original form?
IT MUST BE CHEMICAL

14. Chemical Property Change
Baking a cake
Do you have the same substance you began with?
Can you get it back into its original ingredients?
IT MUST BE CHEMICAL!

15. Chemical Property Change
Food Digesting
Can you get back the original food you started with?
BOY I HOPE NOT!
IT MUST BE CHEMICAL!

16. Chemical Property Change
Car Rusting

17. 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.

18. Video
Brainpop

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

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

21. Correct!

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

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

24. Correct!

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

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

27. Correct!

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

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

30. Correct!

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

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

33. Correct!

34. Is it a chemical or physical change?
Lighter fluid burning
Chemical Change
Physical Change

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

36. Correct!

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

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

39. Correct!

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

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

42. Correct!

43. NOTES Physical Properties/Changes
change in: texture, shape, size, color, odor, volume, mass, weight, and density or change in state.
Chemical Properties/Changes
Change in: color, bubbling and fizzing, light production, smoke, temperature change, rusting, tarnishing

44. NOTES Physical _________/Changes
change in: _______, shape, _______, color, volume, mass, _______, and density and change in state.
Chemical Properties/________
Change in: color, _______ and fizzing, light _________, smoke, temperature _________ , rusting and tarnishing