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True/False
Indicate whether the sentence or statement is true
or false.
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1.
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Because water is a polar molecule, it tends to cause ionic compounds mixed in water to
dissociate into ions.
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2.
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Capillarity is apparent when you put a straw in water and the water level inside the
straw rises higher than the level in the surrounding container.
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3.
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Organic compounds are substances produced and found in living things.
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4.
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Functional groups are side groups of carbon compounds that confer specific properties
to these compounds.
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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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Which
of the following characteristics of water is not a result of hydrogen
bonding? a. | adhesive
strength | b. | capillarity | c. | cohesive
strength | d. | All of the above are a result of hydrogen
bonding. | | |
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6.
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Carbon is different from most other elements in that a. | it has four
electrons in its outermost energy level. | b. | it readily bonds with other carbon
atoms. | c. | it can form single, double, or triple bonds with other
atoms. | d. | it shares two electrons with another atom when it forms a
covalent bond. | | |
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7.
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Which
of the following is not true of alcohols? a. | They contain a hydroxyl group
(–OH). | b. | They are polar molecules. | c. | They can affect
processes in living things, either positively or negatively. | d. | They are the
only kind of functional group in organic molecules that contain oxygen. | | |
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8.
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Amino
acids are monomers of a. | disaccharides. | c. | nucleotides. | b. | proteins. | d. | steroids. | | | | |
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9.
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Which
organic molecule below is most closely related to lipids? a. | amino
acids | c. | nucleotides | b. | CH2 chains | d. | sugars | | | | |
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10.
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Which
organic molecule below is most closely related to nucleic acids? a. | amino
acids | c. | nucleotides | b. | CH2 chains | d. | sugars | | | | |
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Completion
Complete each sentence or
statement.
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11.
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Water
is very effective at dissolving other polar substances because of its
____________________.
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12.
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Breaking of ____________________ bonds is the first thing that happens when water is
heated, which means that it takes a great deal of thermal energy to raise the temperature of
water.
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13.
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In
the molecule that has the chemical formula C2H4, the carbon atoms are bonded together with a ____________________
bond.
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14.
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Because oxygen atoms tend to attract positively charged atoms, organic compounds that
contain oxygen atoms tend to form ____________________ bonds.
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15.
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In a
condensation reaction, two molecules become linked together and a molecule of
____________________ is produced.
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16.
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The
formation of polymers from monomers occurs as a result of ____________________ reactions, and the
breakdown of polymers into monomers occurs as a result of ____________________
reactions.
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17.
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Lipids are ____________________ molecules because they have no negative and positive
poles.
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18.
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A
phospholipid is a molecule with a(n) ____________________ head.
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19.
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Lipids are ____________________ molecules because they have no negative and positive
poles.
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20.
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A
phospholipid is a molecule with a(n) ____________________ head.
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