4. Tuesday, Oct. 15 th : “A” Day Wednesday, Oct. 16 th : “B” Day (early out) Agenda  Ch. 2 review questions?  Jeopardy Review  Homework: Vocab Puzzle/Concept Review Ch 2 test Next Time! Concept review packets will be due

5. Chapter 2 Review Problems on Chapter Review?

6. Ch 2 Short Answer Test Questions  The “Critical Thinking” questions in the Jeopardy review game are the short answer questions that you will see on the Chapter 2 test!

7. Matter & Energy Ch.#2

8. THE RULES: You will be in 5 teams The winning team will receive mole money that can be used for 1 point on a test. The host’s decisions are final

9. And now…here is the host of Jeopardy… Mrs. Elfline

10. Let’s Get Ready to play… Today’s Categories are:

11. Vocabulary

12. Sig Figs Sig Figs & Scientific Notation Scientific Notation

13. Critical Thinking Critical Thinking

14. Calculations!

15. Refrigerator Magnets

16. $100 $200 $300 $400 $500 Vocabulary $100 $200 $300 $400 $500 Sig Figs & Sci. Sig Figs & Sci. Notation $100 $200 $300 $400 $500 Critical Thinking $100 $200 $300 $400 $500 Calculations! $100 $200 $300 $400 $500 Refrigerator Magnets DD FJ

17. The energy of motion Answer…

18. Kinetic Energy 100

19. The kinetic energy of the particles in a sample of matter Answer…

20. Temperature 200

21. Any factor that could affect the results of an experiment Answer…

22. Variable 300

23. A statement or mathematical expression that describes a behavior of the natural world Answer…

24. Law 400

25. A chemical process that absorbs energy A chemical process that absorbs energy Answer…

26. Endothermic Process 500

27. Answer… What is the measurement 0.0455 rounded to 2 significant figures? rounded to 2 significant figures?

28. 100 0.046

29. Answer… How many sig figs are in 0.0020 mm?

30. 2 200

31. What is 0.0840 written in scientific notation? Answer…

32. 8.40 x 10 -2 300

33. (6.02 x 10 7 ) (9.1 x 10 5 ) Remember sig figs! Answer…

34. 5.5 x 10 13 400

35. How many significant figures does 0.00402 have? Answer…

36. 3 500

37. Explain why is an ice cube melting a physical change. Answer…

38. The water molecules are still water molecules, they haven’t chemically changed. The water has just changed states from a solid (ice) to a liquid (water). 100

39. Explain the difference between an endothermic process and an exothermic process. Answer…

40. In an endothermic process, energy is absorbed. In an exothermic process, energy is given off or released. 200

41. Explain why pictures of atoms and molecules are models. Answer…

42. Because atoms and molecules are way too small to see, scientists must use models to study their structure and behavior. 300

43. Why should a scientist record all observations, even those that appear insignificant or don’t agree with the hypothesis? Answer…

44. ALL scientific observations provide information, even if the information does not agree with the hypothesis. Many scientific discoveries have been made because experiments did not turn out as expected. 400

45. The mass of a 3.45g piece of aluminum was measured several times. The measured masses were 2.67g, 2.59g, and 2.64g. Use these results to explain the difference between accuracy and precision. Answer…

46. The measured masses were NOT close to the actual mass of the aluminum, 3.45g, so the measurements were NOT accurate. The measured masses WERE closely grouped together, so they WERE precise. 500

47. Convert 323 K to ˚C Answer…

48. 50˚C 100

49. Convert 20˚C to K Answer…

50. 293 K 200

51. An object has a mass of 57.6 g. Find the object’s density if the volume of the object is 40.25 cm 3. Remember sig figs and units! Answer…

52. 1.43 g/cm 3 1.43 g/cm 3 300

53. The temperature of a piece of copper with a mass of 95.4 g increases from 298.0 K to 321.1 K when the metal absorbs 849 J of energy as heat. What is the specific heat of the copper? Remember sig figs and units! Answer…

54. .385 J/gK.385 J/gK 400

55. How much energy is needed to raise the temperature of a 75 g sample of aluminum from 22.4 K to 94.6 K if the specific heat of aluminum, c p, is 0.897 J/gK. Remember sig figs and units! Answer…

56. 4,900 J 4,900 J 500

57. Answer…

58. Charlie Brown 100

59. Answer…

60. Dorothy (from the Wizard of Oz) 200

61. Answer…

62. Michael Jackson 300

63. Answer…

64. William Shakespeare 400

65. Answer…

66. Flavor Flav 500

67. Daily Double How much do you want to wager? Daily Double Daily Double

68. FINAL JEOPARDY

69. CATEGORY: Calculations and Sig Figs How much do you want to wager? Proceed…

70. The dimensions of a rectangle are 1.27 cm, 1.3 cm, and 2.5 cm. What is the volume? Remember sig figs and units! Proceed…

71. 4.1 cm 3 Proceed…

72. Thanks for PLAYING!

73. Credits Created by: Chad Kafka, Business Teacher Huntley High School chad@kafkaproductions.com Jeopardy sound effects used solely for the purpose of fun, entertainment, and education and NOT for profit.