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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the force of gravity on an object
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2.
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closeness to true value
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3.
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the SI scale for temperature
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4.
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narrowness of range of measurements
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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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known or estimated in a measurement
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7.
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the quantity of matter an object contains
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8.
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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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9.
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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. | 11.00 mm | d. | 11
mm |
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10.
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How many significant figures are in the measurement 0.003 4 kg?
a. | five | c. | This cannot be determined. | b. | four | d. | two |
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11.
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The density of mercury is 5,427 kg/(m3). If the density of water is
1.0 g/mL, will mercury float or sink in water?
a. | Mercury will sink because the density of mercury is 5.427 g/mL, which is greater than
the 1.0 g/mL density of water. | b. | Mercury will sink because the density of
mercury is 5,427 g/mL, which is greater than the 1.0 g/mL density of water. | c. | Mercury will float
because the density of mercury is 0.05427 g/mL, which is less than the 1.0 g/mL density of
water. | d. | Mercury will float because the density of mercury is 0.005427 g/mL, which is less
than the 1.0 g/mL density of water. |
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12.
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What is the measurement 1042 L rounded off to two significant digits?
a. | 1.1 10
L | c. | 1040 L | b. | 1050 L | d. | 1.0 10 L |
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13.
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If the temperature changes by 100 K, by how much does it change in C?
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14.
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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. | 3.1 g/cm | c. | 0.32 g/cm | b. | 2.0 g/cm | d. | 200
g/cm |
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15.
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Chlorine boils at 239 K. What is the boiling point of chlorine expressed in
degrees Celsius?
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16.
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Which of the following mass units is the largest?
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17.
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What is the temperature of absolute zero measured in C?
a. | –373C | c. | –173C | b. | –273C | d. | –73C |
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18.
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What is the boiling point of water in kelvins?
a. | 373 K | c. | 273 K | b. | 100 K | d. | 0 K |
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19.
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Which of the following measurements contains two significant figures?
a. | 0.000 44 L | c. | 0.004 40 L | b. | 0.004 04 L | d. | 0.004 00 L |
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20.
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The closeness of a measurement to its true value is a measure of its
____.
a. | usefulness | c. | precision | b. | reproducibility | d. | accuracy |
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21.
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Which of the following equalities is NOT correct?
a. | 10 kg = 1 g | c. | 100 cg = 1 g | b. | 1 cm = 1
mL | d. | 1000 mm = 1
m |
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22.
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What quantity is represented by the metric system prefix deci-?
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23.
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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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24.
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Which temperature scale has no negative temperatures?
a. | Joule | c. | Kelvin | b. | Celsius | d. | Fahrenheit |
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25.
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Which group of measurements is the most precise? (Each group of measurements is
for a different object.)
a. | 2 g, 2.5 g, 3 g | c. | 2 g, 3 g, 4 g | b. | 2.0 g, 3.0 g, 4.0 g | d. | 1 g, 3 g, 5 g |
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26.
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How many significant figures are in the measurement 40,500 mg?
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27.
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As the density of a substance increases, the volume of a given mass of that
substance ____.
a. | increases | c. | fluctuates | b. | is not affected | d. | decreases |
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28.
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In the measurement 0.503 L, which digit is the estimated digit?
a. | 5 | b. | the 0 to the left of the decimal
point | c. | the 0 immediately to the left of the 3 | d. | 3 |
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29.
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Which of the following measurements (of different masses) is the most
accurate?
a. | 3.000 000 g | c. | 3.122 22 g | b. | 3.1000 g | d. | 3.100 00 g |
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30.
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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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31.
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Which of the following volumes is the smallest?
a. | one milliliter | c. | one deciliter | b. | one liter | d. | one microliter |
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32.
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Density is found by dividing ____.
a. | mass by area | c. | area by mass | b. | volume by mass | d. | mass by volume |
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33.
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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 first increases, then
decreases. | c. | The volume increases. | d. | The volume first decreases, then
increases. |
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34.
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Express the sum of 1111 km and 222 km using the correct number of significant
digits.
a. | 1330 km | c. | 1333 km | b. | 1333.0 km | d. | 1300 km |
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35.
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Express the sum of 7.68 m and 5.0 m using the correct number of significant
digits.
a. | 12.7 m | c. | 13 m | b. | 10 m | d. | 12.68 m |
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36.
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What is the SI unit of mass?
a. | kilogram | c. | candela | b. | joule | d. | liter |
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37.
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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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38.
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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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39.
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What is the temperature –34 C expressed in
kelvins?
a. | 339 K | c. | 139 K | b. | 207 K | d. | 239 K |
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40.
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How many significant figures are in the measurement 811.40 grams?
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Short Answer
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41.
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What is the density of an object having a mass of 5.0 g and a volume of 27.0
cubic centimeters?
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42.
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Round off the measurement 0.003 095 5 m to three significant figures.
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43.
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What is the sum of 7.210 L and 4 L expressed in the correct number of
significant digits?
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44.
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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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45.
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What is the sum of 2.9 g and 5.47 g expressed in the correct number of
significant digits?
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46.
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What is the temperature 128 K expressed in degrees Celsius?
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47.
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What is the product of the number 500 and the measurement 0.003 57 m expressed
in the correct number of significant digits?
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Problem
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48.
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What is the volume, in cubic centimeters, of a sample of cough syrup that has a
mass of 50.0g? The density of cough syrup is 0.950g/cm3. (Show all of your work for
credit)
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49.
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Convert 4,530mm to cm. (Show all of your work for credit)
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50.
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What is the mass, in kilograms, of 14.0 L of gasoline? (Assume the density of
gasoline is 0.680g/cm3 (Show all work to get credit)
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51.
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A particle is traveling at 500 cm/s. What is the speed in
kilometers/hour? (show all of your work for credit.
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52.
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Convert 552.3cg to mg ( show all of your work for credit)
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53.
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Convert 0.065km to decimeters ( Show all of your work for credit)
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Essay
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54.
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Explain the difference between precision and accuracy. Suppose you made three
different mass measurements of a sugar sample you knew to have a mass of 1 g. How would you know
whether or not the measurements were accurate? How would you know whether or not they were precise?
Could the three measurements be precise, but not accurate? Explain.
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