Matching
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Match each item with the correct statement below. a. | organic chemistry | d. | analytical chemistry | b. | inorganic chemistry | e. | physical chemistry | c. | biochemistry |
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1.
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the study of the processes that take place in organisms
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2.
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concerned with the mechanism, rate, and energy transfer that occurs when matter
undergoes a change
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3.
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the study of all chemicals containing carbon
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4.
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the study of chemicals that, in general, do not contain carbon
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5.
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the study of the composition of matter
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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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6.
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gaseous state of substance that is a liquid or solid at room
temperature
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7.
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a physical blend of two or more components
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8.
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part of a sample having uniform composition and properties
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9.
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not uniform in composition
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10.
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a substance formed in a chemical reaction
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11.
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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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12.
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amount of matter an object contains
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13.
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describes mixture with a uniform composition
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14.
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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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15.
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substance that cannot be changed into simpler substances by chemical
means
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16.
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composed of two or more substances chemically combined in a fixed
proportion
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17.
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process in which substances are changed into different substances
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Match each item with the correct statement below. a. | absolute zero | e. | mass | b. | Kelvin temperature scale | f. | significant figure | c. | Celsius temperature
scale | g. | precision | d. | weight | h. | accuracy |
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18.
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closeness to true value
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19.
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narrowness of range of measurements
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20.
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known or estimated in a measurement
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21.
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the quantity of matter an object contains
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22.
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the lowest point on the Kelvin scale
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23.
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the SI scale for temperature
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24.
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the force of gravity on an object
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25.
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the non-SI scale for temperature
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Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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26.
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The variable that is observed during an experiment is called what type of
variable?
a. | independent | c. | controlling | b. | manipulated | d. | responding |
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27.
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The diameter of a carbon atom is 0.000 000 000 154 m. What is this number
expressed in scientific notation?
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28.
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Which field of science studies the composition and structure of matter?
a. | physics | c. | chemistry | b. | biology | d. | geology |
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29.
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The study of chemicals that, in general, do not contain carbon is traditionally
called what type of chemistry?
a. | bio | c. | physical | b. | inorganic | d. | analytical |
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30.
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Which of the following would a chemist be most likely to study?
a. | a leaf floating on water | c. | a leaf being blown by the
wind | b. | a leaf changing color in autumn | d. | a leaf being eaten by
insects |
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31.
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Which of the following best describes an example of pure chemistry?
a. | testing the effects of lower concentrations of a drug on humans | b. | studying chemicals
containing carbon | c. | developing a cure for
osteoporosis | d. | finding an antidote for a new strain of virus |
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32.
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Which of the following can be observed only in a microscopic view?
a. | foam insulation | c. | shape of a soybean plant | b. | X-ray of a knee
joint | d. | structure of a muscle
cell |
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33.
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Which of the following was a major contribution to chemistry by Antoine
Lavoisier?
a. | He showed that oxygen is required for material to burn. | b. | He demonstrated the
presence of phlogiston in air. | c. | He encouraged scientists to form explanations
based on philosophical arguments. | d. | He developed the science of
alchemy. |
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34.
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One characteristic of a scientific theory is that ____.
a. | it can never be proved | c. | it cannot be modified | b. | it can be
proved | d. | it summarizes a set
of observations |
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35.
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A theory is a ____.
a. | proposed explanation for an observation | b. | well-tested
explanation for a broad set of observations | c. | summary of the results of many
observations | d. | procedure used to test a proposed explanation |
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36.
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Collaboration and communication are important in science because ____.
a. | most research problems are not very complex | b. | most scientists have
the knowledge to solve any scientific problem | c. | they increase the likelihood of a successful
outcome | d. | they keep scientists from having to repeat
experiments |
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37.
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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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38.
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When paper turns yellow-brown upon exposure to sunlight, what type of change is
likely taking place?
a. | a physical change | b. | a chemical change | c. | neither a physical
change nor a chemical change | d. | both a physical change and a chemical
change |
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39.
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What happens to matter during a chemical reaction?
a. | Matter is neither destroyed or created. | b. | Some matter is
destroyed. | c. | Some matter is created. | d. | Some matter is destroyed and some is
created. |
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40.
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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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