This document contains a review of key chemistry concepts including: - Definitions of atoms, molecules, elements, compounds, and mixtures - Descriptions of physical and chemical changes and reactions - Examples of common substances and whether they are made of atoms or molecules - Identification of elements, compounds, and mixtures - True/false questions about atomic structure and the properties of mixtures

2. Definitions

3. Reactions

4. Misc.

5. Physical/Chemical Changes

6. Atoms or Molecules

7. Elements, Compounds, & Mixtures

8. Definitions $ 100 $200 $ 300 $400 $ 500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $ 200 $ 300 $400 $500 $100 $ 200 $300 $400 $500 $100 $200 $300 $400 $500 Reactions Misc. Elements, Compounds, & Mixtures Atoms or Molecules Physical/Chemical Changes

9. 1-100 What is an atom? $100 1 - 100

10. 1-100A Building block of matter, the smallest particle of an element that still has the properties of that element. $100 1 - 100

11. 1-200 What is a molecule? $200

12. 1-200A The smallest particle of a compound that still keeps all of the properties of that compound; formed from combining two or more atoms. $200 1 - 100

13. 1-300 What is a compound? $300

14. 1-300A Different kinds of atoms that are joined together to form a new chemical substance $300 1 - 100

15. 1-400 What does a closed system refer to? $400

16. 1-400A A system in which the total mass remains constant before and after a chemical or physical change. $400 1 - 100

17. 1-500 What is a mixture? $500

18. 1-500A A combination of two or more substances (elements and/or compounds) that keep their properties. $500 1 - 100

19. 2-100 What is a reactant? $100 1 - 100

20. 2-100A It is the substance that enters into a reaction. $100 1 - 100

21. 2-200 What is the name of a substance produced by a reaction? $200

22. 2-200A A product $200 1 - 100

23. 2-300 What is a chemical reaction? $300

24. 2-300A A process in which substances undergo chemical changes, forming new substances with different properties. $300 1 - 100

25. 2-400 Carbon Dioxide and water are the reactants in what chemical reaction we learned about in class? $400

26. 2-400A Photosynthesis $400 1 - 100

27. 2-500 Oxygen is the reactant in which of the chemical reactions we've learned about? $500

28. 2-500A Burning and rusting $500 1 - 100

29. 3-100 Identify the following term: Any of the 100+ fundamental substances that consist of atoms of only one kind. $100 1 - 100

30. 3-100A Element $100 1 - 100

31. 3-200 What process consists of breaking down or separating a substance into simpler compounds or elements? $200

32. 3-200A Decomposition $200 1 - 100

33. 3-300 This diagram is an example of a: molecule, compound, element, mixture, or atom $300 H20

34. 3-300A Water is a molecule! $300 1 - 100

35. 3-400 Identify the following reaction, and list the reactants and products: Sulfuric acid + Sugar--> carbon + steam $400

36. 3-400A It's a acid reaction, Sulfuric acid + Sugar are the reactants, and carbon + steam are the products. $400 1 - 100

37. 3-500 Identify the following substances as elements, compounds,or mixtures: Kool-aid- Water- Salt- Aluminum Foil- $500

38. 3-500A Kool-aid-Mixture Water-compound Salt-compound Aluminum Foil-element $500 1 - 100

39. 4-100 Water evaporating is an example of what type of change? $100 1 - 100

40. 4-100A Physical change. $100 1 - 100

41. 4-200 What is a chemical change? $200

42. 4-200A A change in which one or more substances combine or break apart to form a new substance. $200 1 - 100

43. 4-300 What is a physical change? $300

44. 4-300A A change in a substance that does not change its identity. $300 1 - 100

45. 4-400 List five common physical changes $400

46. 4-400A evaporation, vaporization, melting, condensation, thermal expansion, contraction, sublimation, and freezing. $400 1 - 100

47. 4-500 List five common chemical changes. $500

48. 4-500A Photosynthesis, acid reaction, rusting, burning, digestion. $500 1 - 100

49. 5-100 All atoms have the same structure, a nucleus with protons and electron with a cloud of orbiting neutrons. $100 1 - 100

50. 5-100A False, the nucleus has protons and neutrons, and the electrons orbit the nucleus. $100 1 - 100

51. 5-200 In order to get an 8-1/2 X 11 piece of paper cut down to the size of an atom, you need to cut the paper _______ times. $200

52. 5-200A 85 times $200 1 - 100

53. 5-300 Identify the following substances as atoms or molecules: Copper- Coal- $300

54. 5-300A Copper- Atom Coal- Molecule $300 1 - 100

55. 5-400 Identify the following substances as atoms or molecules: Aluminum- Water- Chalk- Sugar- $400

56. 5-400A Aluminum- Atom Water- Molecule Chalk-Molecule Sugar-Molecule $400 1 - 100

57. 5-500 Identify the following substances as atoms or molecules: Carbon (graphite)- Sulfur- Salt- Carbon Dioxide- Helium- Iron- $500

58. 5-500A Carbon (graphite)- Atom Sulfur-Atom Salt-molecule Carbon Dioxide-molecule Helium-Atom Iron-Atom $500 1 - 100

59. 6-100 True or False: In a mixture, atoms are chemically combined. $100 1 - 100

60. 6-100A $100 1 - 100 False, the substances in a mixture do not combine chemically. They also keep their own properties.

61. 6-200 Is air, an element, compound, or a mixture? $200

62. 6-200A $200 1 - 100 Air is a mixture of the gases nitrogen, oxygen, carbon dioxide, and many others.

63. 6-300 This diagram is an example of a: molecule, compound, element, mixture, or atom. $300

64. 6-300A Mixture- Salt Water $300 1 - 100

65. 6-400 Identify the following substances as elements, compounds,or mixtures: Copper Wire- Salad Dressing- Soil- Chalk- $400

66. 6-400A Copper Wire- Element Salad Dressing- Mixture Soil-Mixture Chalk-Compound $400 1 - 100

67. 6-500 Identify the following substances as elements, compounds,or mixtures: Air- Salt Water- Milk- Coal- Graphite- Helium- Sulfur- $500

68. 6-500A Air-mixture Salt Water-mixture Milk-mixture Coal-compound Graphite-element Helium-element Sulfur-element $500 1 - 100

69. Final Jeopardy Reactions

70. Contestants: As a team decide how much you want to wager...

71. Name the reactants and products of the following reaction: Sugar + oxygen <--- carbon dioxide + water

72. Contestants: Please put down your writing tools and wait for further instructions.

73. Reactants: Carbon Dioxide + water Products: Sugar + Oxygen.

74. That's all for today. Good luck on your test tomorrow!

75. Daily Double Round 1 Daily Double!!

76. Contestants: As a team decide how much you want to wager...