Matching
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Match each item with the correct statement below. a. | representative
particle | d. | percent
composition | b. | mole | e. | standard temperature and pressure | c. | Avogadro's
number | f. | empirical
formula | | | | |
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1.
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the
number of representative particles of a substance present in 1 mole of that substance
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2.
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an
atom, an ion, or a molecule, depending upon the way a substance commonly exists
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Match each item with the correct statement below. a. | molar
volume | b. | molar mass | c. | atomic
mass | | |
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3.
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the
number of grams of an element that is numerically equal to the atomic mass of the element in
amu
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4.
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the
mass of a mole of any element or compound
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Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
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5.
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What
SI unit is used to measure the number of representative particles in a substance? a. | kilogram | c. | kelvin | b. | ampere | d. | mole | | | | |
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6.
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How
many hydrogen atoms are in 5 molecules of isopropyl alcohol, C H O?
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7.
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Which
of the following is NOT a representative particle? a. | atom | c. | anion | b. | cation | d. | all of the above | | | | |
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8.
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Which
of the following elements exists as a diatomic molecule? a. | neon | c. | nitrogen | b. | lithium | d. | sulfur | | | | |
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9.
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Avogadro's number of representative particles is equal to one ____. a. | kilogram | c. | kelvin | b. | gram | d. | mole | | | | |
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10.
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All
of the following are equal to Avogadro's number EXCEPT ____. a. | the number of
atoms of bromine in 1 mol Br | b. | the number of atoms of gold in 1 mol
Au | c. | the number of
molecules of nitrogen in 1 mol N | d. | the number of molecules of carbon monoxide in 1 mol
CO | | |
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11.
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The
atomic masses of any two elements contain the same number of ____. a. | atoms | c. | ions | b. | grams | d. | milliliters | | | | |
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12.
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Which
of the following is NOT a true about atomic mass? a. | The atomic mass is 12 g for
magnesium. | b. | The atomic mass is the mass of one mole of
atoms. | c. | The atomic mass is found by checking the periodic
table. | d. | The atomic mass is the number of grams of an element that is
numerically equal to the mass in amu. | | |
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13.
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The
mass of a mole of NaCl is the ____. a. | molar mass | c. | molecular mass | b. | atomic
mass | d. | gram atomic
mass | | | | |
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Essay
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14.
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Give
three examples of methods of measuring the amount of something, and give an example of how one of
these quantities can be converted to another type of quantity.
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