INTRODUCTION UNIT TEST #2 (3086)
Multiple Choice: Choose the best answer for each question. Bubble in the correct space on the scan sheet.
51. The average amount of energy of motion in the molecules of a substance is called
A. Heat
B. Temperature
C. Energy
D. Density
52. The movement of energy from a hotter object to a cooler object is called
A. Heat
B. Temperature
C. Energy
D. Density
53. The ability to do work or create change is called _____?
A. Heat
B. Temperature
C. Energy
D. Density
Use the pictures to the right for questions 54-56
54. Which picture(s) best illustrates heat transfer by convection?
A. A
B. B
C. C
D. A and C
The arrows
55. Which picture(s) best illustrates heat transfer by conduction?
A. A
B. B
C. C
D. A and C
56. Which picture(s) best illustrates heat transfer by radiation?
A. A
B. B
C. C
D. B and C
Multiple Choice: Choose the best answer for each question. Bubble in the correct space on the scan sheet.
57. The energy of motion is called
A. Potential energy
B. Heat energy
C. Kinetic energy
D. Chemical energy
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58. As you raise the temperature of a substance, what happens to its molecules?
A. The molecules become larger, spread out and have more kinetic energy.
B. The molecules become smaller, contract and have less kinetic energy.
C. The molecules become faster, spread out and have more kinetic energy.
D. The molecules become slower, contract and have less kinetic energy.
59. Which statement correctly identifies how solid water is different from liquid water?
A. In solid water the molecules are farther apart.
B. Only in solid water are the molecules not polar.
C. In solid water the molecules are closer together.
D. Only in solid water do the molecules have spaces between them.
60. Which of the following is the BEST example of how the water cycle carries on energy transfer?
A. A flooding river depositing silt on a floodplain
B. A warm ocean current warming the air above it
C. Ocean water depositing sand particles on a shore
D. Water seeping through the soil and dissolving salts
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Use the Periodic Table below to answer questions 61- 65
61. Which element has two protons, neutrons and electrons?
A. Hydrogen (H)
B. Oxygen (O)
C. Helium (He)
D. Nitrogen (N)
62. How many protons does Oxygen (O) have?
A. 5
B. 8
C. 1
D. 17
63. How many neutrons does Sulfur (S) have?
A. 16
B. 32
C. 34
D. 33
64. How many neutrons does Cobalt (Co) have?
A. 27
B. 58
C. 31
D. 32
65. If Nickel (Ni) has 28 protons how many electrons does it have?
A. 59
B. 28
C. 31
D. 30
66. What is an example of compound?
A. He (a gas)
B. oxygen plus nitrogen (O + N)
C. Na (solid)
D. NaCl (salt)
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Use the pictures below for questions 67-70.
A
B
C
67. Rate the jars of molecules shown in the three different phases above from the least energetic to the most energetic
molecules.
A. (A, B, C)
B. (B, C, A)
C. (C, A, B)
D. (C, B, A)
68. Which of the states of matter above will not take the shape of its container?
A. A
B. B
C. C
D. A and B
69. Which jar of molecules vibrates in place?
A. A
B. B
C. C
D. A and B
70. Which of the states of matter above travels the fastest and farthest?
A. A
B. B
C. C
D. B and C
Matching:
71. Temperature at which a substance changes form a solid to a liquid
A. Solid
72. Temperature at which a substance changes from a liquid to a solid
B. Freezing point
73. Definite shape and definite volume
C. Liquid
74. No definite shape and no definite volume
D. Melting point
75. No definite shape and definite volume
E. Gas
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Matching:
76. From a solid to a liquid
A. Energy gained
77. From a liquid to a gas
B. Energy lost
78. From a solid to a gas
C. No energy gained or lost
79. From a gas to a liquid
80. From a liquid to solid
81. Sublimation
82. Melting
83. Evaporation
84. Freezing
Matching:
85. Process by which a liquid changes to a gas
A. Condensation
86. Process by which a solid changes to a gas
B. Sublimation
87. Process by which a gas changes to a liquid
C. Evaporation
88. Process by which a gas changes to a solid
D. Deposition
Matching:
89. Flammability
A. Chemical property
90. Color change
B. Physical property
91. Mass change
92. Ripening of fruit
93. Boiling point
94. Chemistry in a Ziploc lab
95. Change in temperature
96. Phase changes
97. Size and shape change
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Matching:
98. Heating up your dinner in a microwave
A. Exothermic
99. Chemistry in a Ziploc lab
B. Neither endothermic or exothermic
100. Hand warmers
C. Endothermic
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