2. OBJECTIVE: WARM-UP: Give the basic definition for a physical change & a chemical change. Demonstrate knowledge of physical & chemical changes.

3. Physical Change Physical changes – Just a change in appearance, no new substance made. Physical property changes could include a change in: texture, shape, size, color, volume, mass, weight, and density.

4. Chemical Change Chemical changes- A change where a new substance is made & it has at least one indicator 5 Indicators: Temperature change, Color change, Gas produced, Light Produced, Precipitate Now let’s check your homework!

5. Study Guide Cut & Paste Activity 1.Fold your colored construction paper in half & draw a line on the fold line 2.Cut out & glue on top ½ of each section. titles Definitions Signs of this change What Happens 3. Cut out examples & glue on correct half of chart. Physical Change Chemical Change

6. Which statement is true about an exothermic reaction 1.Absorbs energy 2.Releases energy 3.Requires no energy 4.Container becomes colder

7. Which of the following is NOT an indicator of a chemical reaction? 1.Bubbles 2.Size change 3.Temperature change 4.Precipitate

8. During a chemical change a new substance is formed. 1.True 2.False

9. Which of the following would increase the rate of reaction? 1.Reducing heat/cooling 2.Larger particle size 3.Adding an inhibitor 4.Smaller particle size

10. A solid that forms from 2 liquids is called a … 1.Sublimation 2.Precipitate 3.Evaporate 4.Condensate

11. Which of the following is an example of a chemical change? 1.Melting butter 2.Mixing milk & chocolate syrup 3.Burning wood 4.Breaking glass

12. Which of the following is an example of a physical change 1.Leaves changing color 2.Rusting 3.Burning wood 4.Melting butter

13. Dissolving Sugar in Tea 1.Physical 2.Chemical

14. Logs Burning 1.Physical 2.Chemical

15. Cutting Paper 1.Physical 2.Chemical

16. Egg rotting 1.Physical 2.Chemical

17. Egg breaking 1.Physical 2.Chemical

18. Frying an egg 1.Physical 2.Chemical

19. Leaves changing color in the fall 1.Physical 2.Chemical

20. QUIZLET www.quizlet.com Search Quizlet for Mrs. Kelly Chemical Reactions Space here!!!

21. Is it a chemical or physical change? Sugar dissolving in tea 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? Logs burning 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? Cutting paper 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? Crushing a Tylenol tablet 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? Metal rusting 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? Lighter fluid burning 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. Is it a chemical or physical change? An egg rotting Chemical Change Physical Change

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

41. Correct!

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

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

44. Correct!

45. Web Activities... http://www.quia.com/quiz/303980.html http://www.edinformatics.com/math_science/a_p_che m.htmhttp://www.edinformatics.com/math_science/a_p_che m.htm http://www.chem4kids.com/extras/quiz_reactintro/inde x.htmlhttp://www.chem4kids.com/extras/quiz_reactintro/inde x.html

46. INDEPENDENT WORK TIME Chemical Reactions worksheet, both sides (only up to #20) Skip #6, 10, 12, 19

47. DISCOVERY EDUCATION ARTICLE Read the Article: Chemistry Capers & answer the worksheet questions.