Matching (Value 10)
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Match each item with the correct statement below. a. | mixture | d. | reactant | b. | product | e. | heterogeneous mixture | c. | phase | f. | vapor |
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1.
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gaseous state of substance that is a liquid or solid at room
temperature
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2.
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a physical blend of two or more components
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3.
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part of a sample having uniform composition and properties
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4.
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not uniform in composition
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5.
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starting substance in a chemical reaction
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Match each item with the correct statement below. a. | distillation | d. | compound | b. | mass | e. | element | c. | chemical
reaction | f. | homogeneous
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6.
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amount of matter an object contains
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7.
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describes mixture with a uniform composition
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8.
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a process in which a liquid is boiled to produce a vapor that is condensed
again into a liquid
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9.
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composed of two or more substances chemically combined in a fixed
proportion
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10.
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process in which substances are changed into different substances
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Multiple Choice (Value 24)
Identify the choice that best completes the statement or answers
the question.
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11.
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Which of the following is NOT an example of matter?
a. | air | c. | smoke | b. | heat | d. | water vapor |
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12.
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A golf ball has more mass than a tennis ball because it ____.
a. | takes up more space | c. | contains different kinds of matter | b. | contains more
matter | d. | has a definite
composition |
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13.
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All of the following are physical properties of matter EXCEPT ____.
a. | mass | c. | melting point | b. | color | d. | ability to rust |
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14.
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Which of the following are considered physical properties of a substance?
a. | color and odor | c. | malleability and hardness | b. | melting and boiling
points | d. | all of the
above |
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15.
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Which state of matter expands when heated and is easy to compress?
a. | gas | c. | solid | b. | liquid | d. | all of the
above |
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16.
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All of the following are physical properties of a substance in the liquid state
EXCEPT ____.
a. | indefinite volume | c. | not easily compressed | b. | definite
mass | d. | indefinite
shape |
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17.
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Which of the following is a physical change?
a. | corrosion | c. | evaporation | b. | explosion | d. | rotting of food |
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18.
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Which of the following CANNOT be classified as a substance?
a. | table salt | c. | nitrogen | b. | air | d. | gold |
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19.
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Which of the following is a heterogeneous mixture?
a. | air | c. | steel | b. | salt water | d. | soil |
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20.
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Which of the following CANNOT be considered a single phase?
a. | a pure solid | c. | a homogeneous mixture | b. | a pure
liquid | d. | a heterogeneous
mixture |
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21.
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Separating a solid from a liquid by evaporating the liquid is called
____.
a. | filtration | c. | solution | b. | condensation | d. | distillation |
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22.
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An example of a homogeneous mixture is ____.
a. | water | c. | noodle soup | b. | stainless steel | d. | oxygen |
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23.
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Which of the following is true about compounds?
a. | They can be physically separated into their component elements. | b. | They have
compositions that vary. | c. | They are substances. | d. | They have properties
similar to those of their component elements. |
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24.
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A substance that can be separated into two or more substances only by a chemical
change is a(n) ____.
a. | solution | c. | mixture | b. | element | d. | compound |
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25.
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Which of the following is used for chemical symbols today?
a. | drawings | c. | letters | b. | icons | d. | numbers |
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26.
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The chemical symbol for iron is ____.
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27.
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Which of the following represents a compound?
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28.
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Which substance has a chemical symbol that is derived from a Latin name?
a. | calcium | c. | oxygen | b. | hydrogen | d. | potassium |
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29.
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In the chemical reaction in which sucrose is heated and decomposes to form
carbon dioxide and water, which of the following is a reactant?
a. | sucrose | c. | water | b. | carbon dioxide | d. | heat |
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30.
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What must occur for a change to be a chemical reaction?
a. | There must be a change in chemical properties. | b. | There must be a
change in physical properties. | c. | The change must involve a change in
mass. | d. | The change must involve a change in volume. |
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31.
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All of the following changes to a metal are physical changes EXCEPT ____.
a. | bending | c. | rusting | b. | melting | d. | polishing |
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32.
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Which of the following does NOT involve a physical change?
a. | mixing | c. | grinding | b. | melting | d. | decomposing |
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33.
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Which of the following is true for all chemical reactions?
a. | The total mass of the reactants increases. | b. | The total mass of
the products is greater than the total mass of the reactants. | c. | The total mass of
the products is less than the total mass of the reactants. | d. | The total mass of
the reactants equals the total mass of the products. |
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34.
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When an iron nail is ground into powder, its mass ____.
a. | stays the same | c. | increases | b. | decreases | d. | cannot be
determined |
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Numeric Response (Value 4)
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35.
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What is the melting point of water in degrees Celsius?
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36.
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In how many physical states does water commonly exist?
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