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 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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2.
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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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3.
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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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4.
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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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5.
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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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6.
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An alloy is
an example of a ____ solution. a. | dilute | c. | liquid | b. | gaseous | d. | solid | | | | |
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7.
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A molecule
that is positively charged on one end and negatively charged on the other end is
____. a. | a
hydrocarbon | c. | polar | b. | nonpolar | d. | radioactive | | | | |
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8.
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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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9.
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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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10.
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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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11.
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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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12.
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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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13.
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A process
that uses a solution of known concentration to find the concentration of another solution is called
____. a. | hydration | c. | ionization | b. | neutralization | d. | titration | | | | |
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14.
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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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15.
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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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16.
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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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17.
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The formula
HCl stands for ____. a. | the hydronium ion | c. | hydrogen peroxide | b. | hydrochloric
acid | d. | sodium
hydroxide | | | | |
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18.
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Ammonia is a
weak base because it produces ____ ions in solution. a. | strong | c. | only a
few | b. | weak | d. | many | | | | |
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19.
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A base that
only partly ionizes in a solution is a ____ base. a. | concentrated | c. | strong | b. | dilute | d. | weak | | | | |
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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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Polyesters
are fibers made of ____. a. | glycerin | c. | many esters | b. | two esters | d. | organic salts | | | | |
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23.
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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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24.
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Blood
contains compounds called ____ that allow small amounts of acids or bases to be absorbed without
harmful effects. a. | esters | c. | enzymes | b. | buffers | d. | precipitates | | | | |
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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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