Multiple Choice Identify the
choice that best completes the statement or answers the question.
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1.
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A chemical bond that occurs when atoms share electrons is a(n) ____ bond.
a. | covalent | c. | magnetic | b. | ionic | d. | polyatomic |
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2.
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A compound that is made up only of carbon and hydrogen is called a(n)
____.
a. | alcohol | c. | carbohydrate | b. | amino acid | d. | hydrocarbon |
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3.
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A hydrocarbon that has at least one double or triple bond is ____.
a. | aromatic | c. | substituted | b. | saturated | d. | unsaturated |
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4.
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A hydrocarbon containing only single-bonded carbon atoms is called a(n) ____
hydrocarbon.
a. | aromatic | c. | saturated | b. | substituted | d. | unsaturated |
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5.
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How many electrons does a carbon atom have in its outer energy level?
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6.
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The electrons involved in the formation of a chemical bond are called
a. | dipoles. | c. | Lewis electrons. | b. | s electrons. | d. | valence
electrons. |
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7.
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What are shared in a covalent bond?
a. | ions | c. | electrons | b. | Lewis structures | d. | dipoles |
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8.
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In drawing a Lewis structure, each nonmetal atom except hydrogen should be
surrounded by
a. | 2 electrons. | c. | 8 electrons. | b. | 4 electrons. | d. | 10 electrons. |
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9.
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What is the correct Lewis structure for hydrogen chloride, HCl? ![mc009-1.jpg](covalent_files/mc009-1.jpg) ![mc009-2.jpg](covalent_files/mc009-2.jpg)
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10.
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How many atoms of fluorine are present in a molecule of carbon tetrafluoride,
CF4?
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11.
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Name the compound CF4.
a. | calcium fluoride | c. | carbon tetrafluoride | b. | carbon fluoride | d. | monocalcium
quadrafluoride |
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12.
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Name the compound SiO2.
a. | silver oxide | c. | silicon dioxide | b. | silicon oxide | d. | monosilver
dioxide |
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13.
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Name the compound SO3.
a. | sulfur trioxide | c. | selenium trioxide | b. | silver trioxide | d. | sodium trioxide |
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14.
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Name the compound N2O3.
a. | dinitrogen oxide | c. | nitric oxide | b. | nitrogen trioxide | d. | dinitrogen
trioxide |
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15.
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What is the formula for silicon dioxide?
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16.
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What is the formula for dinitrogen trioxide?
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17.
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What is the formula for sulfur dichloride?
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18.
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What is the formula for diphosphorus pentoxide?
a. | P2PeO5 | c. | P2O4 | b. | PO5 | d. | P2O5 |
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19.
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What is the formula for hydrochloric acid?
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20.
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Carbon shows a very strong tendency to form
a. | ionic bonds. | c. | hydrogen bonds. | b. | covalent bonds. | d. | highly polar
bonds. |
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21.
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How many covalent bonds can a carbon atom usually form?
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22.
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What do all organic compounds contain?
a. | hydrogen | c. | oxygen | b. | water | d. | carbon |
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23.
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Organic compounds are defined as all covalently bonded compounds containing
carbon except
a. | oxides and carbonates. | c. | ethers and esters. | b. | alcohols and acids. | d. | aldehydes and
ketones. |
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24.
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Which hydrocarbons have six-membered carbon rings and delocalized
electrons?
a. | alkanes | c. | alkynes | b. | alkenes | d. | aromatic
hydrocarbons |
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25.
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Each carbon atom in a molecule forms four single covalent bonds with other atoms
in a(n)
a. | aromatic hydrocarbon. | c. | structural isomer. | b. | saturated hydrocarbon. | d. | geometric
isomer. |
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26.
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Hydrocarbons in which carbon atoms are connected by only single bonds in
straight chains or branched chains are called
a. | aromatic hydrocarbons. | c. | alkenes. | b. | alkynes. | d. | alkanes. |
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27.
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Which of the following is an alkane?
a. | propyne | c. | propene | b. | propane | d. | propyl bromide |
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28.
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Which of the following is an atom or a group of atoms responsible for the
specific properties of an organic compound?
a. | isomer | c. | substituted hydrocarbon | b. | hydrocarbon | d. | functional group |
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29.
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What is the functional group in carboxylic acids?
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30.
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What is the name of the functional group –OH?
a. | hydroxyl group | c. | carboxyl group | b. | amine group | d. | hydroxide ion |
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31.
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What is the formula of the carboxyl group?
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32.
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Which of these elements does not exist as a diatomic molecule?
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33.
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How do atoms achieve noble-gas electron configurations in single covalent
bonds?
a. | One atom completely loses two electrons to the other atom in the
bond. | b. | Two atoms share two pairs of electrons. | c. | Two atoms share two
electrons. | d. | Two atoms share one electron. |
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34.
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Which of the following elements can form diatomic molecules held together by
triple covalent bonds?
a. | carbon | c. | fluorine | b. | oxygen | d. | nitrogen |
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35.
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Which of the following diatomic molecules is joined by a double covalent
bond?
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36.
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Sulfur hexafluoride is an example of a ____.
a. | monatomic ion | c. | binary compound | b. | polyatomic ion | d. | polyatomic
compound |
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37.
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What is the ending for the names of all binary compounds, both ionic and
molecular?
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38.
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Binary molecular compounds are made of two ____.
a. | metallic elements | c. | polyatomic ions | b. | nonmetallic elements | d. | cations |
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39.
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In naming a binary molecular compound, the number of atoms of each element
present in the molecule is indicated by ____.
a. | Roman numerals | c. | prefixes | b. | superscripts | d. | suffixes |
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40.
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Which of the following correctly shows a prefix used in naming binary molecular
compounds with its corresponding number?
a. | deca-, 7 | c. | hexa-, 8 | b. | nona-, 9 | d. | octa-, 4 |
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41.
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Which of the following is a binary molecular compound?
a. | BeHCO![mc041-1.jpg](covalent_files/mc041-1.jpg) | c. | AgI | b. | PCl![mc041-2.jpg](covalent_files/mc041-2.jpg) | d. | MgS |
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42.
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When naming acids, the prefix hydro- is used when the name of the acid
anion ends in ____.
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43.
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Which of the following shows both the correct formula and correct name of an
acid?
a. | HClO , chloric acid | c. | H PO , phosphoric acid | b. | HNO , hydronitrous
acid | d. | HI, iodic
acid |
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44.
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What is the name of H ![mc044-1.jpg](covalent_files/mc044-1.jpg) SO ![mc044-2.jpg](covalent_files/mc044-2.jpg) ?
a. | hyposulfuric acid | c. | sulfuric acid | b. | hydrosulfuric acid | d. | sulfurous acid |
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45.
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When the name of an anion that is part of an acid ends in -ite, the acid
name includes the suffix ____.
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46.
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What is the formula for sulfurous acid?
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47.
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What is the formula for phosphoric acid?
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48.
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What is the formula for hydrosulfuric acid?
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49.
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Select the correct formula for sulfur hexafluoride.
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50.
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Suppose you encounter a chemical formula with H as the cation. What do you know
about this compound immediately?
a. | It is a polyatomic ionic compound. | c. | It is a base. | b. | It is an
acid. | d. | It has a 1
charge. |
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