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
lowest point on the Kelvin scale
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6.
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the
SI scale for temperature
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7.
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the
force of gravity on an object
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8.
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the
non-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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9.
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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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10.
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The
expression of 5008 km in scientific notation is ____.
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11.
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What
is the result of multiplying 2.5  10 by 3.5  10 ?
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12.
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What
is the result of adding 2.5  10 and 3.5  10 ?
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13.
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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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14.
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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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15.
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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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16.
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Which
of the following measurements (of different masses) is the most accurate? a. | 3.1000
g | c. | 3.122 22
g | b. | 3.100 00
g | d. | 3.000 000
g | | | | |
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17.
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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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18.
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Three
different people weigh a standard mass of 2.00 g on the same balance. Each person obtains a reading
of 7.32 g for the mass of the standard. These results imply that the balance that was used is
____. a. | accurate | c. | accurate and
precise | b. | precise | d. | neither accurate nor precise | | | | |
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19.
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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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20.
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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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21.
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How
many significant figures are in the measurement 0.003 4 kg? a. | two | c. | five | b. | four | d. | This cannot be determined. | | | | |
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22.
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How
many significant figures are in the measurement 40,500 mg?
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23.
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How
many significant figures are in the measurement 811.40 grams?
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24.
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Express the sum of 1111 km and 222 km using the correct number of significant
digits. a. | 1300
km | c. | 1333
km | b. | 1330
km | d. | 1333.0
km | | | | |
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25.
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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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26.
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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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27.
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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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28.
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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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29.
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Express the product of 4.0  10 m and 8.1  10 m using the correct number of significant
digits.
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30.
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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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31.
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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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32.
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What
quantity is represented by the metric system prefix deci-?
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33.
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What
is the metric system prefix for the quantity 0.000 001? a. | centi- | c. | kilo- | b. | deci- | d. | micro- | | | | |
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34.
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The
chief advantage of the metric system over other systems of measurement is that it
____. a. | has more
units | c. | is in
French | b. | is in multiples of 10 | d. | is derived from nature itself | | | | |
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35.
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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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36.
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Which
of the following volumes is the smallest? a. | one microliter | c. | one milliliter | b. | one
liter | d. | one
deciliter | | | | |
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37.
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What
is the SI unit of mass? a. | liter | c. | candela | b. | joule | d. | kilogram | | | | |
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38.
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What
is the temperature of absolute zero measured in  C? a. | –373 C | c. | –173 C | b. | –273 C | d. | –73 C | | | | |
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39.
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Which
temperature scale has no negative temperatures? a. | Celsius | c. | Joule | b. | Fahrenheit | d. | Kelvin | | | | |
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40.
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What
is the boiling point of water in kelvins? a. | 0 K | c. | 273 K | b. | 100
K | d. | 373
K | | | | |
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41.
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Which
of the following mass units is the largest?
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42.
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The
weight of an object ____. a. | is the same as its mass | c. | is not affected by gravity | b. | depends on its
location | d. | is always the
same | | | | |
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43.
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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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44.
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If
the temperature changes by 100 K, by how much does it change in  C?
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45.
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Chlorine boils at 239 K. What is the boiling point of chlorine expressed in degrees
Celsius?
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Commonly Used
Metric Prefixes | Prefix | Meaning | Factor | mega
(M) | 1 million times larger than the unit it
precedes | 10 | kilo
(k) | 1000 times larger than the unit it
precedes | 10 | deci
(d) | 10 times smaller than the unit it
precedes | 10 | centi
(c) | 100 times smaller than the unit it
precedes | 10 | milli
(m) | 1000 times smaller than the unit it
precedes | 10 | micro ( ) | 1 million times
smaller than the unit it precedes | 10 | nano (n) | 1000 million times smaller than the unit it
precedes | 10 | pico
(p) | 1 trillion times smaller than the unit it
precedes | 10 | | | |
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46.
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What
is the quantity 0.0075 meters expressed in centimeters? Use the table above to help
you. a. | 0.075
cm | c. | 7.5
cm | b. | 0.75
cm | d. | 70.5
cm | | | | |
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47.
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What
is the quantity 7896 millimeters expressed in meters? Use the table above to help
you. a. | 7.896
m | c. | 789.6
m | b. | 78.96
m | d. | 789,600
m | | | | |
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48.
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What
is the quantity 987 milligrams expressed in grams? Use the table above to help you. a. | 0.000 987
g | c. | 9.87
g | b. | 0.987
g | d. | 98,700
g | | | | |
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49.
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Which
of the following equalities is NOT correct? Use the table above to help you. a. | 100 cg = 1
g | c. | 1 cm = 1 mL | b. | 1000 mm = 1
m | d. | 10 kg = 1
g | | | | |
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50.
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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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51.
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The
quantity 44 liters expressed in cubic meters is ____. a. | 0.000 044
m | c. | 0.44 m | b. | 440 000 m | d. | 0.044 m | | | | |
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52.
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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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53.
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What
is the density of an object having a mass of 8.0 g and a volume of 25 cm ? a. | 0.32
g/cm | c. | 3.1 g/cm | b. | 2.0 g/cm | d. | 200
g/cm | | | | |
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54.
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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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55.
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What
is the volume of 45.6 g of silver if the density of silver is 10.5 g/mL? a. | 0.23
mL | c. | 479
mL | b. | 4.34
mL | d. | none of the
above | | | | |
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56.
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If a
liter of water is heated from 20 C to 50 C, what happens to its volume? a. | The volume
decreases. | b. | The volume increases. | c. | The volume first
increases, then decreases. | d. | The volume first decreases, then
increases. | | |
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57.
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If
the temperature of a piece of steel decreases, what happens to its density? a. | The density
decreases. | b. | The density increases. | c. | The density does
not change. | d. | The density first increases, then
decreases. | | |
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58.
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As
the density of a substance increases, the volume of a given mass of that substance
____. a. | increases | c. | decreases | b. | is not affected | d. | fluctuates | | | | |
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