Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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What distinguishes a substance from a mixture?
a. | Substances are compounds, and mixtures are not. | b. | The composition of
substances cannot vary, while the composition of mixtures can. | c. | Mixtures are
groupings of elements, and compounds are not. | d. | Samples of the same substance can have
different intensive properties. |
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2.
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How could you separate a mixture based on the size of the substances?
a. | stirring the mixture constantly | c. | filtration | b. | adding acid to the
mixture | d. | vaporization
point |
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3.
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When multiplying and dividing measured quantities, the number of significant
figures in the result should be equal to the number of significant figures in ____.
a. | the least and most precise measurements | b. | all of the
measurements | c. | the most precise measurement | d. | the least precise
measurement |
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4.
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Which state of matter has a definite volume and takes the shape of its
container?
a. | solid | b. | liquid only | c. | gas
only | d. | both b and c |
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5.
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Which of the following is a physical change?
a. | evaporation | b. | rotting of food | c. | explosion | d. | corrosion |
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6.
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What must occur for a change to be a chemical reaction?
a. | There must be a change in physical properties. | b. | There must be a
change in chemical properties. | c. | The change must involve a change in
volume. | d. | The change must involve a change in mass. |
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7.
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Which of the following is a physical property?
a. | melting point | b. | combustible | c. | ability to
rust | d. | explosive |
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8.
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Which of the following measurements contains two significant figures?
a. | 0.004 00 L | b. | 0.004 04 L | c. | 0.000 44
L | d. | 0.004 40 L |
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9.
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An unknown cylindrical substance was found inside a container buried
underground. A scientist measured the mass to be 11.9 g and the volume was measured to be 4.1
mL. Another scientist wanted a sample of the unknown substance so the cylinder was split in
half. What would the density be of each half cylinder?
a. | 0.7g/mL | c. | impossible to determine | b. | 2.9
g/mL | d. | 1.45
g/mL |
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10.
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How many milligrams are in 18.9 grams?
1 gram = 10
decigrams 1 gram = 100
centigrams 1 gram = 1000 milligrams
a. | 18.9 milligrams | c. | 189 milligrams | b. | 1890 milligrams | d. | 18900
milligrams |
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11.
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A golf ball has more mass than a tennis ball because it
a. | takes up more space. | b. | contains different kinds of
matter. | c. | has a definite composition. | d. | contains more
matter. |
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12.
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Which state of matter expands when heated and is easy to compress?
a. | gas | b. | liquid only | c. | solid
only | d. | both b and c |
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13.
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Which of the following is an extensive property?
a. | density | c. | mass | b. | boiling point | d. | reactivity |
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Matching
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Match each item with the correct statement below. a. | distillation | d. | compound | b. | mass | e. | element | c. | chemical
reaction | f. | homogeneous
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14.
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describes mixture with a uniform composition
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15.
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substance that cannot be changed into simpler substances by chemical
means
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16.
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amount of matter an object contains
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17.
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process in which substances are changed into different substances
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