Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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Which of the following statements about density is TRUE?
a. | Density depends on mass and volume. | c. | Density is measured in
milliliters. | b. | Density is weight per unit volume. | d. | Density is a chemical
property. |
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2.
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One way to compare the densities of oil and water is to pour the liquids into a
glass container and observe how they
a. | change color. | c. | separate into layers. | b. | evaporate
quickly. | d. | create an
odor. |
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3.
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The density of a particular substance is always the same at a given
a. | weight and mass. | c. | size and time. | b. | pressure and temperature. | d. | texture and
state. |
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4.
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You have 20 mL of liquid mercury. Liquid mercury has a density of 13.55
g/cm3. What is the mass of the mercury sample?
a. | 1.48 g | c. | 271 g | b. | 0.68 g | d. | 13.55 g |
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5.
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Considering that gold is one of the densest substances on Earth, which would you
rather carry around school in your backpack all day, a kilogram of gold or a kilogram of
feathers?
a. | feathers, because your backpack would feel lighter | b. | gold, because your
backpack would feel lighter | c. | gold, because it would take up less space in
your backpack | d. | feathers, because they would take up less space in your
backpack |
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6.
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What is the density of a substance that has a mass of 5 g and a volume of 40
cm3?
a. | 0.125 g/cm3 | c. | 35 g/cm3 | b. | 8 g/cm3 | d. | 200
g/cm3 |
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7.
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A lead ball has a mass of 454 g. The density of lead is 11.35 g/cm3.
What is the ball's volume?
a. | 0.025 cm3 | c. | 442.65 cm3 | b. | 40
cm3 | d. | 5,152.9
cm3 |
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8.
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What is the mass of a bar of gold that measures 15 cm ´ 8 cm ´ 4 cm and has a density of
19.32 g/cm3?
a. | 19.32 g | c. | 480 g | b. | 24.84 g | d. | 9,273.6 g |
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9.
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A 120 g block of pine wood has a volume of 300 cm3. Would this block
float on water?
(Hint: Water has a density of 1 g/cm3.)
a. | no, because the block is more dense than water | b. | yes, but a much
larger block would not | c. | yes, because the block is less dense than
water | d. | both (b) and (c) |
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10.
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The design of a grease separator used by chefs is based on the property
of
a. | solubility. | c. | inertia. | b. | weight. | d. | density. |
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11.
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The kilogram is the basic metric unit of
a. | length. | b. | mass. | c. | weight. | d. | volume. |
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12.
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The amount of space an object takes up is its
a. | volume. | b. | density. | c. | mass. | d. | length. |
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13.
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A metal washer has a mass of 0.27 g and a volume of 0.1 cm3. What is
its density?
a. | 0.027 g/cm3 | b. | 0.37 g/cm3 | c. | 2.7
g/cm3 | d. | 2.7 g/cm2 |
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14.
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When water fills a submarine’s flotation tanks, the overall density of the
submarine
a. | decreases. | b. | stays the same. | c. | increases. | d. | reduces the buoyant
force. |
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15.
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Which of these substances is the LEAST dense?
a. | wood | b. | copper | c. | mercury | d. | rubber |
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16.
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The mass per unit volume of a substance is its
a. | density. | b. | buoyancy. | c. | weight. | d. | fluid pressure. |
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