2. Do Now Pick Up You binder Pick up your book Flip to Chapter 6, Activity 1 Take out your data table from yesterday

3. Do Now: 11/18/09 1) What do you need for a reaction to take place? 2) What can happen when you combine two substances together in a reaction? Think back to your lab yesterday….

4. Physical vs. Chemical Changes

5. What’s the Difference? Matter can change Examples: Freeze, cut, burn, etc. 2 types of changes 1. Physical changes 2. Chemical changes

6. What is a solution? Two liquids combined Typically a solute with a solvent

7. Physical Changes Matter changes form WITHOUT becoming something new – You start and end with same thing (see below) Examples: cutting, freezing, melting, etc.

8. Molecules in Physical Changes

9. Chemical Changes Matter changes, becomes NEW substance – Start and end with different things Usually irreversible (can’t change back) Examples: burning, rusting, milk going sour

11. Molecules in Chemical Changes The atoms arrange to make a new substance

12. Chemical Change = Reaction Products: the resulting solutions in a reaction Reactants: starting solutions in a reaction

13. Signs of Change Physical – Size – Shape – Texture Chemical – Temperature – Color – Bubbles/fizzing – Smoke – Smell

14. Chemical Reaction Demo NaHCO3 NaOOCCH3 + HOOCCH3 + H2O + CO2 Baking Soda Sodium Acetate, and Vinegarwater, and carbon dioxide

15. Is it a chemical or physical change? Sugar dissolving in tea 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? Logs burning 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? Breaking water up by separating it into hydrogen and oxygen 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? Cutting paper 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? Crushing an aspirin 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? Metal rusting 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 rotting 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. Is it a chemical or physical change? An egg breaking Chemical Change Physical Change

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

38. Correct!

39. Physical Change v. Chemical Change Make a Venn Diagram to compare the 2 types of changes