1. Physical and Chemical Changes
A Write On Activity

2. Warm Up In your own words define the Tyndall Effect.
What are two characteristics of a colloid. Give an example of a colloid.
Solve the density formula for v if the mass is 45g and the density is 15 g/mL

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

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

5. Physical Change
Physical changes occur when matter changes its property but not its chemical nature. Appearance changes but substance does NOT.
Physical property changes could include a change in: texture, shape, size, volume, mass, weight, and density.

6. Physical Change

7. Chemical Change
Chemical changes are changes matter undergoes when it becomes new or different matter.
To identify a chemical change look for signs such as color change, bubbling and fizzing, odor, light production, smoke, and presence of heat.

8. 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.

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. Writing Activity
Write a paragraph about the difference between a chemical and physical change. Give examples of each.