Matching
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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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1.
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closeness to true value
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2.
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narrowness of range of measurements
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3.
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known
or estimated in a measurement
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4.
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the
quantity of matter an object contains
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5.
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the
SI scale for temperature
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Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
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6.
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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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7.
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What
is the result of multiplying 2.5  10 by 3.5 
10 ?
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8.
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What
is the result of adding 2.5  10 and 3.5 
10 ?
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9.
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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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10.
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How
many significant figures are in the measurement 40,500 mg?
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11.
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How
many significant figures are in the measurement 811.40 grams?
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12.
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Express the sum of 7.68 m and 5.0 m using the correct number of significant
digits. a. | 12.68
m | c. | 13
m | b. | 12.7
m | d. | 10
m | | | | |
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13.
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What
is the measurement 1042 L rounded off to two significant digits? a. | 1.0  10
L | c. | 1050
L | b. | 1040
L | d. | 1.1  10
L | | | | |
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14.
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What
is the volume of a salt crystal measuring 2.44  10 m by 1.4 
10 m by 8.4 
10 m?
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15.
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What
quantity is represented by the metric system prefix deci-?
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16.
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Which
of the following units is NOT an official SI unit? a. | kilogram | c. | mole | b. | ampere | d. | liter | | | | |
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17.
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What
is the SI unit of mass? a. | liter | c. | candela | b. | joule | d. | kilogram | | | | |
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18.
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Which
temperature scale has no negative temperatures? a. | Celsius | c. | Joule | b. | Fahrenheit | d. | Kelvin | | | | |
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19.
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Which
of the following mass units is the largest?
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20.
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What
is the temperature –34 C expressed in
kelvins? a. | 139
K | c. | 239
K | b. | 207
K | d. | 339
K | | | | |
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21.
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Which
of the following equalities is NOT correct? a. | 100 cg = 1 g | c. | 1 cm = 1
mL | b. | 1000 mm = 1
m | d. | 10 kg = 1
g | | | | |
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22.
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A
cubic meter is about the same as the volume occupied by a ____. a. | kilogram of
water | c. | washing
machine | b. | cup of milk | d. | basketball arena | | | | |
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23.
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Density is found by dividing ____. a. | mass by volume | c. | mass by area | b. | volume by
mass | d. | area by
mass | | | | |
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24.
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What
is the volume of 80.0 g of ether if the density of ether is 0.70 g/mL?
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25.
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What
is the quantity 0.0075 meters expressed in centimeters? a. | 0.075
cm | c. | 7.5
cm | b. | 0.75
cm | d. | 70.5
cm | | | | |
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26.
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What
is the quantity 7896 millimeters expressed in meters? a. | 7.896
m | c. | 789.6
m | b. | 78.96
m | d. | 789,600
m | | | | |
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27.
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What
is the quantity 987 milligrams expressed in grams? a. | 0.000 987
g | c. | 9.87
g | b. | 0.987
g | d. | 98,700
g | | | | |
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Short Answer
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28.
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The
following length measurements were taken by students using several different measuring devices. Find
the average of the measurements. Make sure that your answer has the correct number of significant
figures.
10.05 cm, 10.1 cm, 9.741 cm, 10.6 cm, 10.5 cm
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29.
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A
cube of a gold-colored metal with a volume of 59 cm has a
mass of 980 g. The density of pure gold is 19.3 g/cm . Is the
metal pure gold? Show calculations to justify your answer.
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30.
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The
density of osmium, which is the densest metal, is 22.57 g/cm . What is the mass of a block of osmium that measures 1.00 cm  4.00 cm  2.50 cm?
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