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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The oceans
are an example of a(n) ____ solution. a. | alloy | c. | liquid | b. | gaseous | d. | solid | | | | |
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2.
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A substance
that does NOT conduct an electric current when it forms a solution is a(n) ____. a. | electrolyte | c. | liquid | b. | nonelectrolyte | d. | solid | | | | |
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3.
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A solution
that contains all of the solute it can hold at a given temperature is ____. a. | diluted | c. | supersaturated | b. | saturated | d. | unsaturated | | | | |
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4.
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The process
by which the positive and negative ions of a crystalline solid separate in water is called
____. a. | dissociation | c. | solution | b. | ionization | d. | saturation | | | | |
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5.
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Increasing
the surface area of a solid ____. a. | causes the solid to ionize | c. | slows the rate of solution | b. | has no effect on the
rate of solution | d. | speeds the rate of
solution | | | | |
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6.
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When a gas
is dissolved in a liquid, the gas dissolves faster if the liquid is ____. a. | cooled | c. | heated | b. | an electrolyte | d. | under low pressure | | | | |
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7.
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The
concentration of solution that contains a large amount of solute in the solvent could be described as
____. a. | concentrated | c. | polar | b. | diluted | d. | unsaturated | | | | |
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8.
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An alloy is
an example of a ____ solution. a. | dilute | c. | liquid | b. | gaseous | d. | solid | | | | |
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9.
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Adding more
solute to a solvent ____. a. | decreases its boiling point | c. | increases its boiling point | b. | does not affect its
boiling point | d. | increases its freezing
point | | | | |
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10.
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The amount
of solute that can be dissolved in a specific amount of solvent at a given temperature is its
____. a. | concentration | c. | dilution | b. | density | d. | solubility | | | | |
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11.
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Which of the
following combinations would increase the solubility of a gas in a liquid? a. | Decrease the pressure
and decrease the temperature. | b. | Decrease the pressure and increase the
temperature. | c. | Increase the pressure and decrease the
temperature. | d. | Increase the pressure and increase the
temperature. | | |
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12.
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Which of the
following will speed up the dissolving of a solid solute in water? a. | Cool the
solution. | c. | Grind up the
solvent. | b. | Freeze the solute. | d. | Stir the solution. | | | | |
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13.
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In a
titration, the ____ is the point at which the indicator changes color and stays that
way. a. | acid
point | c. | pH
point | b. | endpoint | d. | standard point | | | | |
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14.
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In a
titration, the ____ is the solution for which the concentration is known. a. | indicator | c. | normal
solution | b. | hydrate | d. | standard solution | | | | |
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15.
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A(n) ____ is
a substance that produces H+ ions in a water solution. a. | acid | c. | salt | b. | base | d. | alcohol | | | | |
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16.
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____
measures how acidic or basic a substance is. a. | An ester | c. | pH | b. | A base | d. | The hydronium ion | | | | |
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17.
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____ change
color in the presence of an acid or a base. a. | Acids | c. | Buffers | b. | Glycerins | d. | Indicators | | | | |
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18.
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A ____ is a
compound formed in solution from the negative ion of an acid and the positive ion of a
base. a. | detergent | c. | salt | b. | glycerin | d. | soap | | | | |
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19.
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A(n) ____
comes from an alcohol that is not a base but has a hydroxyl group. a. | ester | c. | salt | b. | glycerin | d. | soap | | | | |
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20.
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In a
chemical equation, a single arrow that points at the ions that are formed indicates a ____ acid or
base. a. | strong | c. | neutral | b. | weak | d. | concentrated | | | | |
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21.
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In a ____
reaction, an acid and a base produce a salt and a water. a. | decomposition | c. | dilute | b. | neutralization | d. | concentrated | | | | |
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22.
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pH measures
the ____ of hydronium ions in a solution. a. | versatility | c. | strength | b. | neutralization | d. | concentration | | | | |
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23.
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Figure 25-1
shows ____. a. | neutralization of an
acid | c. | ionization of an
acid | b. | neutralization of a
base | d. | ionization of a
base | | | | |
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24.
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Coffee has a
pH of about 5. Coffee is ____. a. | extremely acidic | c. | somewhat acidic | b. | extremely
basic | d. | somewhat
basic | | | | |
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25.
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To
neutralize gastric juices in your stomach, antacids contain ____. a. | bases | c. | hydronium
ions | b. | H+
ions | d. | phenolphthalein | | | | |
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