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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H3O+ units are also known as ____. a. | hydrogen
ions | c. | hydroxide
ions | b. | hydronium
ions | d. | hydroxyl
groups | | | | |
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2.
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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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3.
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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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4.
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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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5.
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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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6.
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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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7.
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Polyesters
are fibers made of ____. a. | glycerin | c. | many esters | b. | two esters | d. | organic salts | | | | |
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8.
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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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9.
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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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10.
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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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