1. Physical and Chemical Changes

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

3. Physical changes occur when matter changes its property,
but not its chemical nature.

4. Physical property changes could include a change in:
texture
shape
size
color
odor
volume
mass
weight
density

5. Physical Change

6. Chemical Change
Chemical changes are changes that matter undergo when it becomes new or different matter.

7. To identify a chemical change look for signs such as:
color change
bubbling and fizzing
light production
smoke
presence of heat

8. Chemical Change Example:
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.

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
Chemical Change
Physical 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. Activity Time!!!

37. To figure out what type of change is happening: physical or chemical?
Purpose:
To figure out what type of change is happening: physical or chemical?

38. MATERIALS: 2 tablespoons baking soda ¼ cup vinegar 1 balloon 1 bottle
funnel

39. **Your team will decide together
HYPOTHESIS:
If baking soda and vinegar and combined in a container sealed by a balloon, then ___________________________________________________________________________________________________________________.
**Your team will decide together
what to write

40. PROCEDURE: Pour vinegar into the graduated cylinder.
Stretch open the balloon mouth and using your notecard funnel carefully pour the 2 tablespoons of baking soda into the balloon
Carefully stretch the balloon mouth over the bottle. Make sure the balloon mouth is tightly around the neck of the bottle.
Hold the balloon to the side so that the baking soda does not fall into the vinegar.
Now, be ready to watch! Shake the balloon carefully so that it stays attached to the bottle, but so that the baking soda falls into the bottle.

41. Observations:
Draw a picture of observations of what happened to the balloon after the substances were mixed together.
LABEL YOUR DRAWING.

42. Conclusion:
What kind of change(s) took place?
How do you know?