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5. 100 200 300 400 500 Category 1 Category 2 Category 3 Category 4 Category 5 Category 6

6. A 100 The substances that undergo change in a chemical reaction are called

7. reactants A 100

8. Hydrochloric acit, HCl, is added to solid NaOh. After the reaction is finished NaCl idssolved in water remains. What are the products? A 200

9. NaCl and H2O A 200

10. Which of the following does NOT state what the arrow means in a chemical equation? forms, produces, or conserves A 300

11. conserves A 300

12. True or False There is only one reactant in a synthesis reaction. A 400

13. false A 400

14. In a compound, chemical energy is contained in the ______. A 500

15. bonds A 500

16. True or False Bonds of the reactants in a chemical reaction are broken, and bonds of the products are formed. B 100

17. True B 100

18. The total amount of energy before and after a chemical reaction is the same. Thus, energy is ____. B 200

19. conserved B 200

20. In general, if the temperature of a chemical reaction is increased, the reactio rate ___. B 300

21. increases B 300

22. A log is burning in a fireplace. If the amount of oxygen reaching the log is decreased, what is true about the reaction rate? B 400

23. it decreases B 400

24. Reaction rates do NOT tell you how fast B 500

25. substances are changing states

26. In a chemical reaction, the total mass of the reactants equals the total mass of the products. This is the Law of _______. C 100

27. conservation of mass C 100

28. A ____ is the number that appears before a formula in a chemical equation. C 200

29. coefficient C 200

30. The element _____ is always present in a combustion reaction. C 300

31. oxygen C 300

32. DAILY DOUBLE C 400 DAILY DOUBLE Place A Wager

33. In a double replacement reaction, there are two reactants and two ______. C 400

34. products C 400

35. During a chemical reaction, energy is released during the ______ of chemical bonds. C 500

36. formation C 500

37. Cooking requires continuous addition of energy to the chemical reactions that are taking place. The chemical reactions involved in cooking can be described as _____ D 100

38. endothermic D 100

39. Measuring how quickly a reactant disappears is one way to measure the ____ of the reaction. D 200

40. rate D 200

41. If something that reacts with an acid is crushed before being placed in the acid, the reaction rate would ______. D 300

42. increase D 300

43. The statement that when a change is introduced to a system in equilibrium, the equilibrium shifts in the direction that relieves the stress on the system is known as ________ D 400

44. La Chatelier’s Principle D 400

45. What is the purpose of balancing a chemical equation? D 500

46. it shows the mass is conserved D 500

47. What kind of reaction releases heat into the environment? E 100

48. exothermic E 100

49. What kind of reaction takes in heat? E 200

50. endothermic E 200

51. Name 3 kinds of reactions. E 300

52. single-replacement double-replacement combustion synthesis decomposition E 300

53. What are coefficients? E 400

54. The larger numbers in front of compounds. E 400

55. What are subscripts? E 500

56. The smaller, lower numbers after an element. E 500

57. When balancing an equation, which numbers can you NOT change? F 100

58. subscripts F 100

59. Balance this equation: Mg + O2 = MgO F 200

60. 2Mg + O2 = 2MgO F 200

61. What happens when chemical bonds are broken? F 300

62. energy is released F 300

63. In a decomposition reaction, what is being broken down? F 400

64. a compound F 400

65. What does it mean when someone calls an equation “balanced”? F 500

66. It means there is the same number of elements on both sides of the equation. F 500

67. The Final Jeopardy Category is: Balancing Equations Place your wager. Click on screen to begin

68. Balance this equation: Na + Br2 = NaBr Click on screen to continue

69. 2Na + Br2 = 2NaBr Click on screen to continue

70. Thank You for Playing Jeopardy! Game Designed By C. Harr-MAIT