Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
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1.
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A 35-g sample of potassium completely reacts with chlorine to form 67 g of
potassium chloride. How many grams of chlorine must have reacted?
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2.
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The correct answer for the addition shown below is: 3.914 cm + 243.10 cm + 12.0046 cm =
A) | 259.02 cm | B) | 259.019 cm | C) | 259.0
cm | D) | 259.0186 cm |
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3.
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37.4 cm x 2.2 cm equals
A) | 82 cm2 | B) | 82.28 cm2 | C) | 82.3
cm2 | D) | 82.2 cm2 |
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4.
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What is the mass of 225 mL of a liquid that has a density of 0.880
g/mL?
A) | 0.256 g | B) | 0.198 g | C) | 198
g | D) | 0.0039 g |
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5.
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How many significant figures does the measurement 0.0048 cm contain?
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6.
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42.0 °C is equivalent to
A) | 5.55 °F | B) | 273 K | C) | 108
°F | D) | 53.3 °F |
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7.
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If iodine melts at 114 ºC and boils at 184 ºC, what is its physical
state at 130 ºC?
A) | gas | B) | solid | C) | liquid | D) | cannot be
determined |
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8.
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The mass of a block is 9.43 g and its density is 2.35 g/cm3.
The volume of the block is
A) | 2.49 cm3 | B) | 22.2 cm3 | C) | 0.249
cm3 | D) | 4.01 cm3 |
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9.
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An automobile travels 97.2 km on 7.88 L of gasoline. What is the gas
mileage for the automobile in miles per gallon?
A) | 2.02 mi/gal | B) | 0.034 mi/gal | C) | 29.0
mi/gal | D) | 7.67 mi/gal |
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10.
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What is the edge length of a 155-g iron cube? (Density of iron is 7.86
g/cm3)
A) | 2.70 cm | B) | 19.7 cm | C) | 1218
cm | D) | 0.0197 cm |
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11.
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When 20.0 g of mercury is heated from 10.0 °C to 20.0 °C, 27.6 J of
energy are absorbed. What is the specific heat of mercury?
A) | 0.726 J/g°C | B) | 552 J/g°C | C) | 2.76
J/g°C | D) | 0.138 J/g°C |
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12.
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Which of the following is NOT a characteristic of solutions?
A) | a heterogeneous mixture | B) | a homogeneous mixture | C) | variable
composition | D) | contains 2 or more substances |
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13.
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A theory is
A) | a hypothesis that has been tested and validated over a long period of
time | B) | a law that is yet to be tested and validated | C) | a law that has been
validated by several international scientific organizations | D) | a hypothesis that is
yet to be tested and validated |
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14.
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Which of the following is a physical change?
A) | a piece of sulfur is burned | B) | a nail rusts | C) | a firecracker
explodes | D) | a rubber band is stretched |
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