Matching
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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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a substance formed in a chemical reaction
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6.
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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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7.
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amount of matter an object contains
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8.
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describes mixture with a uniform composition
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9.
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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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10.
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substance that cannot be changed into simpler substances by chemical
means
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11.
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composed of two or more substances chemically combined in a fixed
proportion
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12.
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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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13.
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closeness to true value
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14.
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narrowness of range of measurements
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15.
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known or estimated in a measurement
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16.
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the quantity of matter an object contains
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17.
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the lowest point on the Kelvin scale
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18.
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the SI scale for temperature
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19.
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the force of gravity on an object
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20.
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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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21.
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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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22.
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An example of an extensive property of matter is ____.
a. | temperature | c. | mass | b. | pressure | d. | hardness |
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23.
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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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24.
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Which of the following is NOT a physical property of water?
a. | It has a boiling point of 100 C. | b. | It is a colorless
liquid. | c. | It is composed of hydrogen and oxygen. | d. | Sugar dissolves in
it. |
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25.
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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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26.
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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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27.
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Which of the following is true about homogeneous mixtures?
a. | They are known as solutions. | b. | They consist of two or more
phases. | c. | They have compositions that never vary. | d. | They are always
liquids. |
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28.
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Which of the following is a homogeneous mixture?
a. | salt water | c. | sand and water | b. | beef stew | d. | soil |
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29.
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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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30.
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Which of the following items is NOT a compound?
a. | baking soda | c. | sucrose | b. | salad dressing | d. | table salt |
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31.
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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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32.
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What is one difference between a mixture and a compound?
a. | A compound consists of more than one phase. | b. | A compound can only
be separated into its components by chemical means. | c. | A mixture can only be separated into its
components by chemical means. | d. | A mixture must be uniform in
composition. |
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33.
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Which of the following is a chemical property?
a. | color | c. | freezing point | b. | hardness | d. | ability to react with
oxygen |
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34.
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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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35.
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Which of the following is NOT a physical change?
a. | grating cheese | c. | fermenting of cheese | b. | melting cheese | d. | mixing two cheeses in a
bowl |
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36.
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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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37.
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A chemical change occurs when a piece of wood ____.
a. | is split | c. | decays | b. | is painted | d. | is cut |
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38.
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Which of the following indicates that a chemical change has happened during
cooking?
a. | The food darkens. | b. | Bubbles form in boiling
water. | c. | Butter melts. | d. | Energy is transferred from the stove to a
pan. |
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39.
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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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40.
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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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41.
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The expression of 5008 km in scientific notation is ____.
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42.
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The closeness of a measurement to its true value is a measure of its
____.
a. | precision | c. | reproducibility | b. | accuracy | d. | usefulness |
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43.
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Which of the following measurements contains two significant figures?
a. | 0.004 00 L | c. | 0.000 44 L | b. | 0.004 04 L | d. | 0.004 40 L |
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44.
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When a test instrument is calibrated, does its accuracy, precision, or
reliability improve?
a. | precision | c. | reliability | b. | accuracy | d. | all of the
above |
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45.
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Which group of measurements is the most precise? (Each group of measurements is
for a different object.)
a. | 2 g, 3 g, 4 g | c. | 2 g, 2.5 g, 3 g | b. | 2.0 g, 3.0 g, 4.0 g | d. | 1 g, 3 g, 5 g |
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46.
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Which of the following measurements is expressed to three significant
figures?
a. | 0.007 m | c. | 7.30  10
km | b. | 7077 mg | d. | 0.070 mm |
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47.
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In the measurement 0.503 L, which digit is the estimated digit?
a. | 5 | b. | the 0 immediately to the left of the
3 | c. | 3 | d. | the 0 to the left of the decimal
point |
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48.
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Express the product of 2.2 mm and 5.00 mm using the correct number of
significant digits.
a. | 10 mm | c. | 11.0 mm | b. | 11 mm | d. | 11.00
mm |
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49.
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What is the measurement 111.009 mm rounded off to four significant
digits?
a. | 111 mm | c. | 111.01 mm | b. | 111.0 mm | d. | 110 mm |
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50.
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When multiplying and dividing measured quantities, the number of significant
figures in the result should be equal to the number of significant figures in ____.
a. | all of the measurements | b. | the least and most precise
measurements | c. | the most precise measurement | d. | the least precise
measurement |
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