Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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What happens when a piston is used to decrease the volume of a contained
gas?
a. | Fewer gas particles exert a force on the piston. | b. | The piston’s
pressure on the gas becomes greater than the pressure exerted by the gas on the
piston. | c. | Gas particles become compressed. | d. | Gas particles leak out of the
container. |
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2.
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At low temperatures and pressures, how does the volume of a real gas compare
with the volume of an ideal gas under the same conditions?
a. | It is greater. | c. | There is no difference. | b. | It is
less. | d. | It depends on the
type of gas. |
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3.
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An ideal gas CANNOT be ____.
a. | condensed | c. | heated | b. | cooled | d. | compressed |
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4.
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If the atmospheric pressure on Mt. Everest is one-third the atmospheric pressure
at sea level, the partial pressure of oxygen on Everest is ____.
a. | one-sixth its pressure at sea level | c. | one-half its pressure at sea
level | b. | one-third its pressure at sea level | d. | equal to its pressure at sea
level |
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5.
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If oxygen is removed from a sample of air as iron rusts, what happens to the
total pressure of the air?
a. | It increases. | c. | It decreases. | b. | It stays the same. | d. | The change cannot be
determined. |
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6.
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Which of the following atoms would have the greatest velocity if each atom had
the same kinetic energy?
a. | bromine | c. | ammonia | b. | chlorine | d. | hydrogen |
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7.
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What causes water's low vapor pressure?
a. | dispersion forces | c. | hydrogen bonding | b. | covalent bonding | d. | ionic
attractions |
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8.
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Predict which one of the following compounds would be insoluble in water.
a. | NaCl | c. | CF | b. | HCl | d. | CuSO |
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9.
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Which of the following pairs of factors affects the solubility of a particular
substance?
a. | temperature and the nature of solute and solvent | b. | temperature and
degree of mixing | c. | particle size and degree of mixing | d. | particle size and
temperature |
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10.
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Which of the following occurs as temperature increases?
a. | Solubility decreases. | c. | Solubility remains the same. | b. | Solubility
increases. | d. | Molarity
doubles. |
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11.
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In which of the following is concentration expressed in percent by
volume?
a. | 10% (v/v) | c. | 10% (m/m) | b. | 10% (m/v) | d. | 10% |
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12.
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How many milliliters of alcohol are in 167 mL of an 85.0% (v/v) alcohol
solution?
a. | 252 mL | c. | 145 mL | b. | 228 mL | d. | 142 mL |
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13.
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What happens to the energy produced by burning gasoline in a car engine?
a. | The energy is lost as heat in the exhaust. | b. | The energy is
transformed into work to move the car. | c. | The energy heats the parts of the
engine. | d. | all of the above |
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14.
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What does the symbol  H stand for? a. | the specific heat of a substance | b. | the heat capacity of a
substance | c. | the heat of reaction for a chemical reaction | d. | one Calorie given
off by a reaction |
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15.
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For a complex reaction, the reaction progress curve ____.
a. | is a flat line | c. | has several hills and valleys | b. | has only one
peak | d. | shows energy versus
pressure |
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16.
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Which of the following represents a Brønsted-Lowry conjugate acid-base
pair?
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17.
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In a neutral solution, the [H  ] is ____. a. | 10 M | c. | 1  10 M | b. | zero | d. | equal to [OH ] |
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18.
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What is pH?
a. | the negative logarithm of the hydrogen ion concentration | b. | the positive
logarithm of the hydrogen ion concentration | c. | the negative logarithm of the hydroxide ion
concentration | d. | the positive logarithm of the hydroxide ion
concentration |
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19.
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Which of these solutions is the most basic?
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20.
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In a titration, when the number of moles of hydrogen ions equals the number of
moles of hydroxide ions, what is said to have happened?
a. | The equivalence point has been reached. | b. | The end point has
been reached. | c. | The point of neutralization has been reached. | d. | The titration has
failed. |
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21.
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In the following unbalanced reaction, which atom is oxidized? HNO  +
HBr  NO + Br  + H  O a. | hydrogen | c. | oxygen | b. | nitrogen | d. | bromine |
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22.
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The first electrochemical cell was invented by ____.
a. | Michael Faraday | c. | James Maxwell | b. | Alessandro Volta | d. | Benjamin
Franklin |
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23.
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In a voltaic cell, from which electrode do the free electrons originate?
a. | anode only | c. | both anode and cathode | b. | cathode
only | d. | neither anode nor
cathode |
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24.
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A zinc-copper cell is constructed: Zn | Zn  (1 M) || Cu  (1 M) | Cu. What occurs to the mass of the copper electrode as the reaction
proceeds? (Zinc is above copper in the activity series of metals.) a. | It decreases. | c. | It remains the same. | b. | It increases. | d. | cannot be
determined |
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25.
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Which of the following factors does NOT affect the voltage produced in a voltaic
cell?
a. | metal of the electrodes | c. | temperature | b. | concentrations of
ions | d. | pressure |
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26.
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Which of the following is true for a dry cell?
a. | It contains boric acid, which is a solid acid. | b. | The graphite rod
does not undergo reduction, even though it is the cathode. | c. | It can be recharged
many times. | d. | all of the above |
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27.
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How many covalent bonds can each carbon atom form?
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28.
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Alkanes are hydrocarbons that contain what type of bonds?
a. | single covalent bonds only | c. | at least one triple
bond | b. | at least one double bond | d. | ionic bonds |
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29.
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What is the physical state of the smallest alkanes at room temperature?
a. | gas | c. | solid | b. | liquid | d. | gas or liquid |
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30.
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What is the name of the smallest alkyne?
a. | butyne | c. | methyne | b. | ethyne | d. | propyne |
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31.
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What is the common name of the following compound?  a. | isopropyl bromide | c. | isobutyl bromide | b. | tert-butyl bromide | d. | sec-butyl
bromide |
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32.
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What substance is added to an organic molecule to test for the degree of
saturation?
a. | water | c. | bromine | b. | hydrogen gas | d. | hydrogen
bromide |
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33.
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Which of the following compounds has the highest boiling point?
a. | butane | c. | butanal | b. | butanoic acid | d. | ethyl acetate |
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34.
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Which of the following compounds will produce the least energy when completely
oxidized?
a. | hexanoic acid | c. | hexane | b. | hexanol | d. | hexanal |
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35.
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An ester of a long-chain fatty acid and a long-chain alcohol is a(n)
____.
a. | fat | c. | triglyceride | b. | oil | d. | wax |
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36.
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What is the change in the atomic number when an atom emits an alpha
particle?
a. | decreases by 2 | c. | increases by 1 | b. | decreases by 1 | d. | increases by 2 |
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37.
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What symbol is used for beta radiation?
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38.
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Controlled nuclear chain reactions ____.
a. | take place in nuclear reactors | b. | are always fusion reactions | c. | never produce
radioactive by-products | d. | are characteristic of atomic
bombs |
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39.
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What substances are used as moderators in a nuclear reactor?
a. | carbon and water | c. | plutonium and neptunium | b. | liquid sodium and
water | d. | cadmium or other
metal |
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40.
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What is the main detector of a Geiger counter?
a. | ionizable gas in a metal tube | c. | plates of ionizable
plastic | b. | phosphor-covered surface | d. | potassium metal surface |
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