Test Bank for Chemistry 9th Edition by Zumdahl

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Chapter 1: Chemical Foundations
1. Which of the following is an example of a quantitative observation?
A) The piece of metal is longer than the piece of wood.
B) Solution 1 is much darker than solution 2.
C) The liquid in beaker A is blue.
D) The temperature of the liquid is 60°C.
E) At least two of the above (A-D) are quantitative observations.
ANS: D DIF: Easy REF: 1.2
KEY: Chemistry | general chemistry | general concepts | scientific method
MSC: Conceptual
2. A quantitative observation
A) contains a number and a unit
B) does not contain a number
C) always makes a comparison
D) must be obtained through experimentation
E) is none of these
ANS: A DIF: Easy REF: 1.2
KEY: Chemistry | general chemistry | general concepts | scientific method
MSC: Conceptual
3. Generally, observed behavior that can be formulated into a statement, sometimes mathematical in nature, is called a(n)
A) observation
B) measurement
C) theory
D) natural law
E) experiment
ANS: D DIF: Easy REF: 1.2
KEY: Chemistry | general chemistry | general concepts | scientific method
MSC: Conceptual
4. The statement “The total mass of materials is not affected by a chemical change in those materials” is called a(n)
A) observation
B) measurement
C) theory
D) natural law
E) experiment
ANS: D DIF: Easy REF: 1.2
KEY: Chemistry | general chemistry | general concepts | scientific method
MSC: Conceptual
5. A chemical theory that has been known for a long time becomes a law.
ANS: F DIF: Easy REF: 1.2
KEY: Chemistry | general chemistry | general concepts | scientific method
MSC: Conceptual
6. Which of the following metric relationships is incorrect?
A) 1 microliter = 10–6 liters
B) 1 gram = 103 kilograms
C) 103 milliliters = 1 liter
D) 1 gram = 102 centigrams
E) 10 decimeters = 1 meter
ANS: B DIF: Easy REF: 1.3
KEY: Chemistry | general chemistry | general concepts | measurement | SI unit | prefixes
MSC: Quantitative
7. For which pair is the SI prefix not matched correctly with its meaning?
A) mega  106
B) kilo  1000
C) deci  10
D) nano  109
E) centi  0.01
ANS: C DIF: Easy REF: 1.3
KEY: Chemistry | general chemistry | general concepts | measurement | SI unit | prefixes
MSC: Conceptual
Copyright © Cengage Learning. All rights reserved. 2
8. A metric unit for length is
A) gram
B) milliliter
C) yard
D) kilometer
E) pound
ANS: D DIF: Easy REF: 1.3
KEY: Chemistry | general chemistry | general concepts | measurement | SI unit | base unit
MSC: Conceptual
9. Which of the following is not a unit in the SI system?
A) ampere
B) candela
C) Kelvin
D) meter
E) calorie
ANS: E DIF: Easy REF: 1.3
KEY: Chemistry | general chemistry | general concepts | measurement | SI unit | base unit
MSC: Conceptual
10. Order the four metric prefixes from smallest to largest.
A) nano- < milli- < centi- < kilo-
B) milli- < nano- < centi- < kilo-
C) kilo- < centi- < nano- < milli-
D) kilo- < centi- < milli- < nano-
E) centi- < nano- < kilo- < milli-
ANS: A DIF: Easy REF: 1.3
KEY: Chemistry | general chemistry | general concepts | measurement | SI unit | prefixes
MSC: Conceptual
11. 8.1 kilogram(s) contains this many grams.
A) 8.1  102
B) 8.1  103
C) 81
D) 0.81
E) 8.1  103
ANS: B DIF: Easy REF: 1.3
KEY: Chemistry | general chemistry | general concepts | measurement | SI unit | mass
MSC: Conceptual
12. Convert 0.3980 m to mm.
A) 398.0 mm
B) 3.980  103 mm
C) 3.980  104 mm
D) 0.03980 mm
E) none of these
ANS: A DIF: Easy REF: 1.3
KEY: Chemistry | general chemistry | general concepts | measurement | SI unit | prefixes
MSC: Conceptual
13. 6.1 seconds contain this many picoseconds.
A) 6.1  1012
B) 6.1  1012
C) 6.1  109
D) 6.1  109
E) 6.1  1015
ANS: A DIF: Easy REF: 1.3
KEY: Chemistry | general chemistry | general concepts | measurement | SI unit | prefixes
MSC: Conceptual
14. 9.49 seconds contain this many nanoseconds.
A) 9.49  107
B) 9.49  109
C) 9.49  1012
D) 9.49  1010
E) 9.49  108
ANS: B DIF: Easy REF: 1.3
KEY: Chemistry | general chemistry | general concepts | measurement | SI unit | prefixes
MSC: Conceptual
Copyright © Cengage Learning. All rights reserved. 3
15. The distance of 21 km equals
A) 0.021 m
B) 0.21 m
C) 210 m
D) 2100 m
E) 2.1  104 m
ANS: E DIF: Easy REF: 1.3
KEY: Chemistry | general chemistry | general concepts | measurement | SI unit | prefixes
MSC: Conceptual
16. What is the measure of resistance an object has to a change in its state of motion?
A) mass
B) weight
C) volume
D) length
E) none of these
ANS: A DIF: Easy REF: 1.3
KEY: Chemistry | general chemistry | general concepts | measurement
MSC: Conceptual
17. The degree of agreement among several measurements of the same quantity is called __________. It reflects the reproducibility of
a given type of measurement.
A) accuracy
B) error
C) precision
D) significance
E) certainty
ANS: C DIF: Easy REF: 1.4
KEY: Chemistry | general chemistry | general concepts | measurement
MSC: Conceptual
18. As part of the calibration of a new laboratory balance, a 1.000-g mass is weighed with the following results:
Trial Mass
1 1.201  0.001
2 1.202  0.001
3 1.200  0.001
The balance is:
A) Both accurate and precise.
B) Accurate but imprecise.
C) Precise but inaccurate.
D) Both inaccurate and imprecise.
E) Accuracy and precision are impossible to determine with the available
information.
ANS: C DIF: Easy REF: 1.4
KEY: Chemistry | general chemistry | general concepts | measurement
MSC: Conceptual
Consider the following three archery targets:
I. II. III.
19. Which of the following figure(s) represent a result having high precision?
A) Figure I only
B) Figure II only
C) Figure III only
D) Figure I and Figure II
E) Figure II and Figure III
ANS: E DIF: Easy REF: 1.4
KEY: Chemistry | general chemistry | general concepts | measurement
MSC: Conceptual
Copyright © Cengage Learning. All rights reserved. 4
20. Which of the following statements concerning these figures is correct?
A) Figure I represents systematic error and Figure II represents random error.
B) Figure I represents random error and Figure II represents systematic error.
C) Figure I and Figure II represent random error.
D) Figure I and Figure II represent systematic error.
E) Figure III represents no errors.
ANS: B DIF: Easy REF: 1.4
KEY: Chemistry | general chemistry | general concepts | measurement
MSC: Conceptual
21. Which of the following is the least probable concerning five measurements taken in the lab?
A) The measurements are accurate and precise.
B) The measurements are accurate but not precise.
C) The measurements are precise but not accurate.
D) The measurements are neither accurate nor precise.
E) All of these are equally probable.
ANS: B DIF: Easy REF: 1.4
KEY: Chemistry | general chemistry | general concepts | measurement
MSC: Conceptual
22. You measure water in two containers: a 10-mL graduated cylinder with marks at every mL, and a 1-mL pipet marked at every 0.1
mL. If you have some water in each of the containers and add them together, to what decimal place could you report the total
volume of water?
A) 0.01 mL
B) 0.1 mL
C) 1 mL
D) 10 mL
E) none of these
ANS: B DIF: Moderate REF: 1.4
KEY: Chemistry | general chemistry | general concepts | measurement | significant figures
MSC: Conceptual
23. The agreement of a particular value with the true value is called
A) accuracy
B) error
C) precision
D) significance
E) certainty
ANS: A DIF: Easy REF: 1.4
KEY: Chemistry | general chemistry | general concepts | measurement
MSC: Conceptual
24. The amount of uncertainty in a measured quantity is determined by:
A) both the skill of the observer and the limitations of the measuring instrument
B) neither the skill of the observer nor the limitations of the measuring instrument
C) the limitations of the measuring instrument only
D) the skill of the observer only
E) none of these
ANS: A DIF: Easy REF: 1.4
KEY: Chemistry | general chemistry | general concepts | measurement
MSC: Conceptual
25. A scientist obtains the number 0.045006700 on a calculator. If this number actually has four (4) significant figures, how should it
be written?
A) 0.4567
B) 0.4501
C) 0.0450
D) 0.04500
E) 0.04501
ANS: E DIF: Easy REF: 1.5
KEY: Chemistry | general chemistry | general concepts | measurement | significant figures | rounding MSC: Conceptual
26. Express the number 0.000333 in scientific notation.
A) 333  106
B) 3.33  102
C) 3.33  104
D) 3.33  104
E) 0.333  103
ANS: D DIF: Easy REF: 1.5
KEY: Chemistry | general chemistry | general concepts | measurement | significant figures | scientific notation MSC:
Conceptual
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27. Express 165,000 in exponential notation.
A) 1.65000  105
B) 1.65  105
C) 1.65000  105
D) 1.65  105
E) 165  103
ANS: B DIF: Easy REF: 1.5
KEY: Chemistry | general chemistry | general concepts | measurement | significant figures | scientific notation MSC:
Conceptual
28. Express the number 0.0810 in scientific notation.
A) 810  104
B) 8.10  102
C) 8.1  102
D) 8.10  102
E) 0.810  101
ANS: D DIF: Easy REF: 1.5
KEY: Chemistry | general chemistry | general concepts | measurement | significant figures | scientific notation MSC:
Conceptual
29. Express the number 6.49  103 in common decimal form.
A) 0.00649
B) 6.49
C) 6490
D) 0.0649
E) 0.000649
ANS: A DIF: Easy REF: 1.5
KEY: Chemistry | general chemistry | general concepts | measurement | significant figures | scientific notation MSC:
Conceptual
30. Express the number 2.37  104 in common decimal form.
A) 237000
B) 0.0000237
C) 0.000237
D) 23700
E) 2370
ANS: D DIF: Easy REF: 1.5
KEY: Chemistry | general chemistry | general concepts | measurement | significant figures | scientific notation MSC:
Conceptual
31. We generally report a measurement by recording all of the certain digits plus ____ uncertain digit(s).
A) no
B) one
C) two
D) three
E) four
ANS: B DIF: Easy REF: 1.5
KEY: Chemistry | general chemistry | general concepts | measurement | significant figures
MSC: Conceptual
32. The beakers shown below have different precisions as shown.
Suppose you pour the water from these three beakers into one container. What would be the volume in the container reported to
the correct number of significant figures?
A) 78.817 mL
B) 78.82 mL
C) 78.8 mL
D) 80 mL
E) 79 mL
ANS: E DIF: Moderate REF: 1.5
KEY: Chemistry | general chemistry | general concepts | measurement | significant figures
MSC: Conceptual
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33. You are asked to determine the perimeter of the cover of your textbook. You measure the length as 39.36 cm and the width as
24.83 cm. How many significant figures should you report for the perimeter?
A) 1
B) 2
C) 3
D) 4
E) 5
ANS: E DIF: Moderate REF: 1.5
KEY: Chemistry | general chemistry | general concepts | measurement | significant figures
MSC: Quantitative
34. Consider the numbers 23.68 and 4.12. The sum of these numbers has ____ significant figures, and the product of these numbers
has ____ significant figures.
A) 3, 3
B) 4, 4
C) 3, 4
D) 4, 3
E) none of these
ANS: D DIF: Easy REF: 1.5
KEY: Chemistry | general chemistry | general concepts | measurement | significant figures
MSC: Conceptual
35. Using the rules of significant figures, calculate the following:
6.167  68
5.10
A) 14.5
B) 16
C) 15
D) 82
E) 14.54
ANS: C DIF: Easy REF: 1.5
KEY: Chemistry | general chemistry | general concepts | measurement | significant figures
MSC: Quantitative
36. Using the rules of significant figures, calculate the following: 4.0021  0.179
A) 3.823
B) 4
C) 3.8231
D) 3.82
E) 3.8
ANS: A DIF: Easy REF: 1.5
KEY: Chemistry | general chemistry | general concepts | measurement | significant figures
MSC: Quantitative
37. How many significant figures are there in the number 0.04560700?
A) 4
B) 5
C) 7
D) 8
E) 9
ANS: C DIF: Easy REF: 1.5
KEY: Chemistry | general chemistry | general concepts | measurement | significant figures
MSC: Conceptual
38. How many significant figures are there in the number 0.0006428?
A) 7
B) 3
C) 8
D) 4
E) 0
ANS: D DIF: Easy REF: 1.5
KEY: Chemistry | general chemistry | general concepts | measurement | significant figures
MSC: Conceptual
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39. How many significant figures are there in the number 3.1400?
A) 1
B) 2
C) 3
D) 4
E) 5
ANS: E DIF: Easy REF: 1.5
KEY: Chemistry | general chemistry | general concepts | measurement | significant figures
MSC: Conceptual
40. How many significant figures should be reported for the difference between 18.6172 mL and 18.57 mL?
A) 1
B) 2
C) 3
D) 4
E) 6
ANS: B DIF: Easy REF: 1.5
KEY: Chemistry | general chemistry | general concepts | measurement | significant figures
MSC: Conceptual
41. What is the best answer to report for
3.478 g  1.164 g
2.00 mL
 0.169 g/mL g/mL?
A) 1.8510 g/mL
B) 1.851 g/mL
C) 1.85 g/mL
D) 1.9 g/mL
E) 2 g/mL
ANS: C DIF: Easy REF: 1.5
KEY: Chemistry | general chemistry | general concepts | measurement | significant figures
MSC: Quantitative
42. What is the best answer to report for (513  0.0039)  25.35?
A) 27.351
B) 27.35
C) 27.3507
D) 27
E) 27.4
ANS: E DIF: Easy REF: 1.5
KEY: Chemistry | general chemistry | general concepts | measurement | significant figures
MSC: Quantitative
43. Convert 2751.4 g to mg.
A) 2.7514 mg
B) 27.514 mg
C) 275.14 mg
D) 2.7514  103 mg
E) 2.7514  106 mg
ANS: E DIF: Easy REF: 1.7
KEY: Chemistry | general chemistry | general concepts | measurement | dimensional analysis MSC: Quantitative
44. Express the volume 781.2 cm3 in liters.
A) 781.2 L
B) 78.12 L
C) 7.812 L
D) 0.7812 L
E) 0.07812 L
ANS: D DIF: Easy REF: 1.7
KEY: Chemistry | general chemistry | general concepts | measurement | dimensional analysis MSC: Quantitative
45. Convert 44.7 m3 to mm3 .
A) 4.47  107 mm3
B) 4.47  1010 mm3
C) 4.47  104 mm3
D) 4.47  105 mm3
E) 4.47  108 mm3
ANS: B DIF: Moderate REF: 1.7
KEY: Chemistry | general chemistry | general concepts | measurement | dimensional analysis MSC: Quantitative
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46. The pressure of the earth's atmosphere at sea level is 14.7 lb/in2. What is the pressure when expressed in g/m2 ? (2.54 cm = 1 in.,
2.205 lb = 1 kg)
A) 2.62  105 g/m2
B) 1.03  107 g/m2
C) 5.02  104 g/m2
D) 4.30  100 g/m2
E) 2.09  105 g/m2
ANS: B DIF: Difficult REF: 1.7
KEY: Chemistry | general chemistry | general concepts | measurement | dimensional analysis MSC: Quantitative
47. Convert 4338 mL to qt. (1 L = 1.06 qt)
A) 4598 qt
B) 4.092 qt
C) 4.092  103 qt
D) 4092 qt
E) 4.598 qt
ANS: E DIF: Easy REF: 1.7
KEY: Chemistry | general chemistry | general concepts | measurement | dimensional analysis MSC: Quantitative
48. Convert 34.4 lb to g. (1 lb = 453.6 g)
A) 7.58  102 g
B) 1.56  103 g
C) 7.58  104 g
D) 1.56  102 g
E) 1.56  104 g
ANS: E DIF: Easy REF: 1.7
KEY: Chemistry | general chemistry | general concepts | measurement | dimensional analysis MSC: Quantitative
49. Convert 59.4 mi to km. (1 m = 1.094 yd, 1 mi = 1760 yd)
A) 6.50  101 km
B) 3.69  101 km
C) 9.56  107 km
D) 5.43  101 km
E) 9.56  101 km
ANS: E DIF: Easy REF: 1.7
KEY: Chemistry | general chemistry | general concepts | measurement | dimensional analysis MSC: Quantitative
50. The density of liquid mercury is 13.6 g/mL. What is its density in units of lb / in3 ? (2.54 cm = 1 in., 2.205 lb = 1 kg)
A) 1.57  102 lb / in3
B) 4.91  101 lb / in3
C) 1.01  101 lb / in3
D) 7.62  102 lb / in3
E) 1.83 lb / in3
ANS: B DIF: Easy REF: 1.7
KEY: Chemistry | general chemistry | general concepts | measurement | dimensional analysis MSC: Quantitative
51. Convert 0.0494 ft3 to L. (2.54 cm = 1 in., 1 L = 1 dm3 )
A) 1.40  101 L
B) 1.40 L
C) 1.51  103 L
D) 1.74  103 L
E) 1.62 L
ANS: B DIF: Moderate REF: 1.7
KEY: Chemistry | general chemistry | general concepts | measurement | dimensional analysis MSC: Quantitative
52. In March 2008, gold reached a milestone value of $1000 per troy ounce. At that price, what was the cost of a gram of gold? (1
troy ounce = 31.10 g)
A) less than $1
B) between $1 and $10
C) between $10 and $50
D) between $50 and $100
E) over $100
ANS: C DIF: Easy REF: 1.7
KEY: Chemistry | general chemistry | general concepts | measurement | dimensional analysis MSC: Quantitative
Copyright © Cengage Learning. All rights reserved. 9
53. It is estimated that uranium is relatively common in the earth's crust, occurring in amounts of 4 g / metric ton. A metric ton is
1000 kg. At this concentration, what mass of uranium is present in 1.5 mg of the earth's crust?
A) 6 ng
B) 6 g
C) 6 mg
D) 6  105 g
E) 6 cg
ANS: A DIF: Moderate REF: 1.7
KEY: Chemistry | general chemistry | general concepts | measurement | dimensional analysis MSC: Quantitative
54. A 20.0 mL sample of glycerol has a mass of 25.2 grams. What is the density of glycerol in ounces/quart? (1.00 ounce = 28.4
grams, and 1.00 liter = 1.06 quarts)
A) 41.9 oz/qt
B) 4.19 102 oz/qt
C) 837 oz/qt
D) 47.0 oz/qt
E) 26.4 oz/qt
ANS: A DIF: Difficult REF: 1.7
KEY: Chemistry | general chemistry | general concepts | measurement | dimensional analysis MSC: Quantitative
55. During a physics experiment, an electron is accelerated to 93 percent of the speed of light. What is the speed of the electron in
miles per hour? (speed of light = 3.00  108 m/s, 1 km = 0.6214 mi)
A) 2.8  108 mi/h
B) 6.2  1011 mi/h
C) 6.7  108 mi/h
D) 1.0  107 mi/h
E) 6.2  108 mi/h
ANS: E DIF: Moderate REF: 1.7
KEY: Chemistry | general chemistry | general concepts | measurement | dimensional analysis MSC: Quantitative
56. In the spring of 2008, petrol cost £1.179 per litre in London. On the same day, the exchange rate was $1 = £0.493. What was the
price of London petrol in dollars ($) per gallon? (1 gal = 3.7854 L)
A) $4.46 /gal
B) $2.20 /gal
C) $9.05 /gal
D) $1.58 /gal
E) $7.68 /gal
ANS: C DIF: Easy REF: 1.7
KEY: Chemistry | general chemistry | general concepts | measurement | dimensional analysis MSC: Quantitative
57. For spring break you and some friends plan a road trip to a sunny destination that is 2105 miles away. If you drive a car that gets
33 miles per gallon and gas costs $3.199/gal, about how much will it cost to get to your destination?
A) $410
B) $220
C) $200
D) $660
E) $6700
ANS: C DIF: Easy REF: 1.7
KEY: Chemistry | general chemistry | general concepts | measurement | dimensional analysis MSC: Quantitative
58. Convert 7.9 kg to lb. (1 kg = 2.205 lb)
A) 17 lbs
B) 1.7 lbs
C) 3.6 lbs
D) 0.017 lbs
E) 17.42 lbs
ANS: A DIF: Easy REF: 1.7
KEY: Chemistry | general chemistry | general concepts | measurement | dimensional analysis MSC: Quantitative
59. Manganese makes up 1.3  10–4 percent by mass of the elements found in a normal healthy body. How many grams of manganese
would be found in the body of a person weighing 206 lb? (2.205 lb = 1 kg)
A) 0.59 g
B) 0.12 g
C) 12 g
D) 59 g
E) 1.2  10–4 g
ANS: B DIF: Moderate REF: 1.7
KEY: Chemistry | general chemistry | general concepts | measurement | dimensional analysis MSC: Quantitative
Copyright © Cengage Learning. All rights reserved. 10
60. In 1928, 29.3 g of a new element was isolated from 660 kg of the ore molybdenite. The percent by mass of this element in the ore
was:
A) 44 %
B) 6.6 %
C) 29.3 %
D) 0.0044 %
E) 19.3 %
ANS: D DIF: Moderate REF: 1.7
KEY: Chemistry | general chemistry | general concepts | measurement | dimensional analysis MSC: Quantitative
61. 409 Kelvin equals
A) 136°F
B) 273°F
C) 682°F
D) 136°C
E) 682°C
ANS: D DIF: Easy REF: 1.8
KEY: Chemistry | general chemistry | general concepts | measurement | SI unit | temperature
MSC: Quantitative
62. The melting point of a certain element is 391°C. What is this on the Fahrenheit scale?
TÃF  TÃC  9ÃF
5ÃC
Ê
Ë
ÁÁÁÁÁÁÁ
ˆ
¯
˜˜˜˜˜˜˜
 32ÃF
Ê
Ë
ÁÁÁÁÁÁÁÁ
ˆ
¯
˜˜˜˜˜˜˜˜
A) 490°F
B) 249°F
C) 977°F
D) 736°F
E) 672°F
ANS: D DIF: Easy REF: 1.8
KEY: Chemistry | general chemistry | general concepts | measurement | SI unit | temperature
MSC: Quantitative
63. Convert: –48.2°C = ____________ °F. TF  TC  9F
5C
Ê
Ë
ÁÁÁÁÁ
Á
ˆ
¯
˜˜˜˜˜
˜
 32F
Ê
Ë
ÁÁÁÁÁÁ
Á
ˆ
¯
˜˜˜˜˜˜
˜
A) –86.8°F
B) –119°F
C) –54.8°F
D) 119°F
E) 224.8F
ANS: C DIF: Easy REF: 1.8
KEY: Chemistry | general chemistry | general concepts | measurement | SI unit | temperature
MSC: Quantitative
64. As warm water sits in a cool room, you measure the temperature change (T = Tfinal – Tinitial). Which of the following is true?
A) The temperature change (T) is bigger if you are measuring in °F.
B) The temperature change (T) is bigger if you are measuring in °C.
C) The temperature change (T) will be the same regardless of the scale you use.
D) Answer A or B is correct, depending on the difference in temperature between the
water and the room.
E) None of the above.
ANS: A DIF: Easy REF: 1.8
KEY: Chemistry | general chemistry | general concepts | measurement | SI unit | temperature
MSC: Conceptual
65. The melting point of picolinic acid is 136.5°C. What is the melting point of picolinic acid on the Fahrenheit scale?
TF  TC  9F
5C
Ê
Ë
ÁÁÁÁÁ
Á
ˆ
¯
˜˜˜˜˜
˜
 32F
Ê
Ë
ÁÁÁÁÁÁ
Á
ˆ
¯
˜˜˜˜˜˜
˜
A) 107.8°F
B) 245.7°F
C) 168.5°F
D) 409.5°F
E) 277.7°F
ANS: E DIF: Easy REF: 1.8
KEY: Chemistry | general chemistry | general concepts | measurement | SI unit | temperature
MSC: Quantitative
Copyright © Cengage Learning. All rights reserved. 11
66. In 1984, some drums of uranium hexafluoride were lost in the English Channel, which is known for its cold water (about 17°C).
The melting point of uranium hexafluoride is 148°F. In what physical state is the uranium hexafluoride in these drums?
TF  TC  9F
5C
Ê
Ë
ÁÁÁÁÁ
Á
ˆ
¯
˜˜˜˜˜
˜
 32F
Ê
Ë
ÁÁÁÁÁÁ
Á
ˆ
¯
˜˜˜˜˜˜
˜
A) solid
B) liquid
C) gas
D) a mixture of solid and liquid
E) not enough information
ANS: A DIF: Moderate REF: 1.8
KEY: Chemistry | general chemistry | general concepts | measurement | SI unit | temperature
MSC: Conceptual
67. The melting point of indium is 156.2°C. At 323°F, what is the physical state of indium? TF  TC  9F
5C
Ê
Ë
ÁÁÁÁÁ
Á
ˆ
¯
˜˜˜˜˜
˜
 32F
Ê
Ë
ÁÁÁÁÁÁ
Á
ˆ
¯
˜˜˜˜˜˜
˜
A) Solid.
B) Liquid.
C) Gas.
D) Not enough information.
E) At 323°F, the indium is partially solid and partially liquid; there is an equilibrium
between the two states.
ANS: D DIF: Moderate REF: 1.8
KEY: Chemistry | general chemistry | general concepts | measurement | SI unit | temperature
MSC: Conceptual
68. On a new temperature scale (°Z), water boils at 120.0°Z and freezes at 40.0°Z. Calculate the normal human body temperature
using this temperature scale. On the Celsius scale, normal human body temperature could typically be 37.1°C, and water boils at
100.0°C and freezes at 0.00°C.
A) 2968°Z
B) 12.4°Z
C) 69.7F
D) 111°Z
E) 29.7°Z
ANS: C DIF: Difficult REF: 1.8
KEY: Chemistry | general chemistry | general concepts | measurement
MSC: Quantitative
69. The calibration points for the linear Reaumur scale are the usual melting point of ice and boiling point of water, which are
assigned the values 0°R and 80°R, respectively. The boiling point of ethanol is 78.4°F. What is this temperature in °R?
A) 158.4°R
B) 49.1R
C) 25.8R
D) 208.4°R
E) 20.6°R
ANS: E DIF: Difficult REF: 1.8
KEY: Chemistry | general chemistry | general concepts | measurement | SI unit | temperature
MSC: Conceptual
70. A monolayer containing 3.23  106 g of oleic acid has an area of 20.0 cm2. The density of oleic acid is 0.895 g / mL. What is the
thickness of the monolayer (the length of an oleic acid molecule)?
A) 7.22  105 cm
B) 5.54  106 cm
C) 5.78  105 cm
D) 1.80  107cm
E) 1.45  107 cm
ANS: D DIF: Moderate REF: 1.9
KEY: Chemistry | general chemistry | general concepts | measurement | SI unit | density
MSC: Quantitative
71. The density of gasoline is 0.7025 g/mL at 20°C. When gasoline is added to water:
A) It will float on top.
B) It will sink to the bottom.
C) It will mix so, you can't see it.
D) The mixture will improve the running of the motor.
E) None of these things will happen.
ANS: A DIF: Easy REF: 1.9
KEY: Chemistry | general chemistry | general concepts | measurement | SI unit | density
MSC: Conceptual
Copyright © Cengage Learning. All rights reserved. 12
72. A piece of zinc with a mass of 12.14 g is submerged in 46.3 cm3 of water in a graduated cylinder. The water level increases to
48.0 cm3. The correct value for the density of zinc from these data is:
A) 7.141 g/ cm3
B) 7.1 g/ cm3
C) 0.14 g/ cm3
D) 0.253 g/ cm3
E) 3.95 g/ cm3
ANS: B DIF: Moderate REF: 1.9
KEY: Chemistry | general chemistry | general concepts | measurement | SI unit | density
MSC: Quantitative
The density of a liquid is determined by successively weighing 25, 50, 75, 100, and 125 mL of the liquid in a 250-mL beaker.
73. If volume of liquid is plotted along the horizontal axis, and total mass of beaker plus liquid is plotted on the vertical axis:
A) The x, or horizontal, intercept is the negative value of the weight of the beaker.
B) The y, or vertical, intercept is the weight of the empty beaker.
C) The slope of the line is 1.0.
D) The line will pass through the origin.
E) The slope of the line is independent of the identity of the liquid.
ANS: B DIF: Moderate REF: 1.9
KEY: Chemistry | general chemistry | general concepts | measurement | SI unit | density
MSC: Conceptual
74. Considering the plot of total mass (y-axis) versus volume (x-axis), which of the following is true?
A) The plot should be rather linear because the slope measures the density of a liquid.
B) The plot should be curved upward because the slope measures the density of a
liquid.
C) The plot should be curved upward because the mass of the liquid is higher in
successive trials.
D) The plot should be linear because the mass of the beaker stays constant.
E) None of the above.
ANS: A DIF: Difficult REF: 1.9
KEY: Chemistry | general chemistry | general concepts | measurement | SI unit | density
MSC: Conceptual
75. A 20.0 mL sample of glycerol has a mass of 25.2 grams. What is the mass of a 57-mL sample of glycerol?
A) 8.8 g
B) 45 g
C) 2.9  104 g
D) 72 g
E) 71.8 g
ANS: D DIF: Easy REF: 1.9
KEY: Chemistry | general chemistry | general concepts | measurement | SI unit | density
MSC: Quantitative
76. Suppose that you purchased a water bed with the dimensions 2.55 m  2.53 dm  235 cm. What mass of water does this bed
contain?
A) 1.52  103 g
B) 1.52  104 g
C) 1.52  105 g
D) 1.52  108 g
E) 1.52  106 g
ANS: E DIF: Moderate REF: 1.9
KEY: Chemistry | general chemistry | general concepts | measurement | SI unit | density
MSC: Quantitative
77. A freighter carrying a cargo of uranium hexafluoride sank in the English Channel in late August 1984. The cargo of uranium
hexafluoride weighed 2.253  108 kg and was contained in 30 drums, each containing 1.47  106 L of UF6. What is the density
(g/mL) of uranium hexafluoride?
A) 1.53 g/mL
B) 5.11 g/mL
C) 2.25 g/mL
D) 0.196 g/mL
E) 51.1 g/mL
ANS: B DIF: Moderate REF: 1.9
KEY: Chemistry | general chemistry | general concepts | measurement | SI unit | density
MSC: Quantitative
Copyright © Cengage Learning. All rights reserved. 13
78. The boiling of water is a
A) physical change because the water merely disappears
B) physical change because the gaseous water is chemically the same as the liquid
C) chemical change because heat is needed for the process to occur
D) chemical change because a gas (steam) is given off
E) chemical and physical damage
ANS: B DIF: Easy REF: 1.1
KEY: Chemistry | general chemistry | general concepts | matter MSC: Conceptual
79. The state of matter for an object that has a definite volume but not a definite shape is
A) solid state
B) liquid state
C) gaseous state
D) elemental state
E) mixed state
ANS: B DIF: Easy REF: 1.1
KEY: Chemistry | general chemistry | general concepts | matter | states of matter
MSC: Conceptual
80. The state of matter for an object that has both definite volume and definite shape is
A) solid state
B) liquid state
C) gaseous state
D) elemental state
E) mixed state
ANS: A DIF: Easy REF: 1.1
KEY: Chemistry | general chemistry | general concepts | matter | states of matter
MSC: Conceptual
81. _________ are substances with constant composition that can be broken down into elements by chemical processes.
A) Solutions
B) Mixtures
C) Compounds
D) Quarks
E) Heterogeneous mixtures
ANS: C DIF: Easy REF: 1.1
KEY: Chemistry | general chemistry | general concepts | matter MSC: Conceptual
82. A method of separation that employs a system with two phases of matter, a mobile phase and a stationary phase, is called
A) filtration
B) chromatography
C) distillation
D) vaporization
E) homogenization
ANS: B DIF: Easy REF: 1.1
KEY: Chemistry | general chemistry | general concepts | matter | separation
MSC: Conceptual
83. Which of the following statements is false?
A) Solutions are always homogeneous mixtures.
B) The terms “atom” and “element” can have different meanings.
C) Elements can exist as atoms or molecules.
D) Compounds can exist as atoms or molecules.
E) At least two of the above statements (A-D) are false.
ANS: D DIF: Easy REF: 1.1
KEY: Chemistry | general chemistry | general concepts | matter MSC: Conceptual
84. An example of a pure substance is
A) elements
B) compounds
C) pure water
D) carbon dioxide
E) all of these
ANS: E DIF: Easy REF: 1.1
KEY: Chemistry | general chemistry | general concepts | matter MSC: Conceptual
Copyright © Cengage Learning. All rights reserved. 14
85. A solution is also called a
A) homogeneous mixture
B) heterogeneous mixture
C) pure mixture
D) compound
E) distilled mixture
ANS: A DIF: Easy REF: 1.1
KEY: Chemistry | general chemistry | general concepts | matter | mixture
MSC: Conceptual
Consider the following choices when answering questions 86-89.
86. Which best represents a homogeneous mixture of an element and a compound?
A) option a
B) option b
C) option c
D) option d
E) option e
ANS: E DIF: Easy REF: 1.1
KEY: Chemistry | general chemistry | general concepts | matter | mixture
MSC: Conceptual
87. Which best represents a gaseous compound?
A) option a
B) option b
C) option c
D) option d
E) option e
ANS: C DIF: Easy REF: 1.1
KEY: Chemistry | general chemistry | general concepts | matter | states of matter
MSC: Conceptual
88. Which best represents a solid element?
A) option a
B) option b
C) option c
D) option d
E) option e
ANS: B DIF: Easy REF: 1.1
KEY: Chemistry | general chemistry | general concepts | matter | element
MSC: Conceptual
89. Which best represents a heterogeneous mixture of two elements?
A) option a
B) option b
C) option c
D) option d
E) option e
ANS: D DIF: Easy REF: 1.1
KEY: Chemistry | general chemistry | general concepts | matter | mixture
MSC: Conceptual
90. All physical changes are accompanied by chemical changes.
ANS: F DIF: Easy REF: 1.1
KEY: Chemistry | general chemistry | general concepts | matter MSC: Conceptual
91. Color changes always indicate a chemical change.
ANS: F DIF: Easy REF: 1.1
KEY: Chemistry | general chemistry | general concepts | matter MSC: Conceptual
Copyright © Cengage Learning. All rights reserved. 15
92. What are the components of the scientific method?
ANS:
1) Making observations (collecting data)
2) Suggesting a possible explanation (formulating a hypothesis)
3) Doing experiments to test the possible explanation (testing the hypothesis)
Depending on the data from the experiments, the hypothesis may be modified and retested.
See Sec. 1.2 of Zumdahl, Chemistry.
DIF: Easy REF: 1.2
KEY: Chemistry | general chemistry | general concepts | scientific method
MSC: Conceptual
93. Garfield (weighing 24 lbs) took a flight to the moon on the space shuttle. As usual, he stuffed himself with lasagna during the
entire flight and napped when he wasn't eating. Much to his delight when he got to the moon he found he weighed only 6 lbs. He
immediately proclaimed a quick weight loss diet. Explain the fallacy in his reasoning. Assume gravity on the moon to be about
one-sixth that of Earth.
ANS:
Garfield (the cartoon cat) may have a different weight on the moon, but he has the same mass. He has apparently forgotten that
weight is the response of mass to gravity, and since the moon has a smaller gravitational field his weight there is less.
See Sec. 1.3 of Zumdahl, Chemistry.
DIF: Moderate REF: 1.3
KEY: Chemistry | general chemistry | general concepts | measurement | SI unit | mass
MSC: Conceptual
94. Contrast the terms precision and accuracy.
ANS:
Precision refers to the agreement among several measurements of the same quantity.
Accuracy refers to the agreement of a measurement with the true value.
Measurements may often be precise without being accurate.
See Sec. 1.4 of Zumdahl, Chemistry.
DIF: Easy REF: 1.4
KEY: Chemistry | general chemistry | general concepts | measurement
MSC: Conceptual
95. What data would you need to estimate the money you would spend on gas to drive your car from Los Angeles to Chicago?
Provide a sample calculation.
ANS:
Data would include: average price per gallon of gasoline, average MPG of the car, mileage of trip.
$  miles 
gal
miles
 $
gal
DIF: Easy REF: 1.7
KEY: Chemistry | general chemistry | general concepts | measurement | dimensional analysis MSC: Conceptual
96. On a new temperature scale (°Y), water boils at 155.0°Y and freezes at 0.00°Y. Calculate the normal human body temperature
using this temperature scale. On the Fahrenheit scale, normal human body temperature is 98.6°F, and water boils at 212.0°F and
freezes at 32.0°F.
ANS:
57.3°Y
The formula derived from the data is Y=(155/180)(F-32).
DIF: Difficult REF: 1.8
KEY: Chemistry | general chemistry | general concepts | measurement | SI unit | temperature
MSC: Quantitative
97. Explain how Archimedes might have used the concept of density to determine whether the king's crown was pure gold. (density of
gold = 19.32 g/cm3)
ANS:
If the density of gold was known to Archimedes, he could weigh the crown to determine its mass and then submerge the crown in
water to measure the volume by displacement. By comparing the density of the crown calculated from this data to the known
density of gold, he could find out if the crown was made of gold.
Archimedes' Principle is slightly different, and not specifically addressed in this text.
See Sec. 1.8 of Zumdahl, Chemistry.
DIF: Moderate REF: 1.9
KEY: Chemistry | general chemistry | general concepts | measurement | SI unit | density
MSC: Conceptual
Copyright © Cengage Learning. All rights reserved. 16
98. Explain the main differences between a compound and a mixture.
ANS:
A mixture may be separated into pure substances by physical means, while a compound requires chemical means to separate it
into elements.
A compound has constant composition (always the same ratio of elements), while a mixture may have varying composition.
See Sec. 1.10 of Zumdahl, Chemistry.
DIF: Easy REF: 1.1
KEY: Chemistry | general chemistry | general concepts | matter | compound; mixture
MSC: Conceptual
99. Give three physical methods used by chemists to separate mixtures and identify the type of mixture best suited for each process.
ANS:
Three common methods are distillation, filtration, and chromatography.
Distillation is useful for mixtures of volatile liquids (or mixtures of gases that can be condensed).
Filtration is useful to separate a mixture of a solid and a liquid.
Chromatography may be used for mixtures of volatile substances (gas chromatography) or soluble substances (paper
chromatography).
See Sec. 1.10 of Zumdahl, Chemistry.
DIF: Moderate REF: 1.1
KEY: Chemistry | general chemistry | general concepts | matter | mixture
MSC: Conceptual
100. Name three methods for the separation of mixtures.
ANS:
Three common methods are distillation, filtration, and chromatography.
See Sec. 1.10 of Zumdahl, Chemistry.
DIF: Easy REF: 1.1
KEY: Chemistry | general chemistry | general concepts | matter | mixture
MSC: Conceptual
101. How many significant figures are in 0.00110
A) 2 C) 4
B) 3 D) 5
ANS: B DIF: Easy REF: 1.5
KEY: Chemistry | general chemistry | general concepts | measurement | significant figures
MSC: Conceptual
102. Which of the following unit factors is incorrect?
A) 1 microliter/1000 nL C) 1 L/1000 mL
B) 1 cg/100 g D) 1000 m/1 km
ANS: B DIF: Easy REF: 1.7
KEY: Chemistry | general chemistry | general concepts | measurement | dimensional analysis MSC: Conceptual
103. Which of the following is not a fundamental metric unit?
A) meter C) gram
B) second D) mole
ANS: C DIF: Easy REF: 1.3
KEY: Chemistry | general chemistry | general concepts | measurement | SI unit | base unit
MSC: Conceptual
104. Which of the following is not a fundamental metric unit?
A) meter C) kilogram
B) second D) liter
ANS: D DIF: Easy REF: 1.3
KEY: Chemistry | general chemistry | general concepts | measurement | SI unit | base unit
MSC: Conceptual
105. Which of the following has a different value on the moon compared to earth?
A) mass C) time
B) weight D) moles
ANS: B DIF: Easy REF: 1.3
KEY: Chemistry | general chemistry | general concepts | measurement
MSC: Conceptual
Copyright © Cengage Learning. All rights reserved. 17
106. How should the number 1.230 x 103 be properly expressed as a decimal?
A) 1230 C) 1230.0
B) 0.001230 D) 1230.
ANS: D DIF: Easy REF: 1.5
KEY: Chemistry | general chemistry | general concepts | measurement | significant figures | scientific notation MSC:
Conceptual
107. Calculate 5.1234 + 0.033  1.650 and report to the correct number of significant figures.
A) 3.1 C) 5.143
B) 3.125 D) 5.1
ANS: C DIF: Easy REF: 1.5
KEY: Chemistry | general chemistry | general concepts | measurement | significant figures
MSC: Quantitative
108. When 87.7 is added to 73.841, the result should be reported with _____ significant figures. And when 87.7 is divided by 73.841
the result should be reported with ______ significant figures.
A) 3,3 C) 4,3
B) 3,5 D) 4,4
ANS: C DIF: Easy REF: 1.5
KEY: Chemistry | general chemistry | general concepts | measurement | significant figures
MSC: Conceptual
109. A wavelength of red light is measured at 655 nm. What is this measurement in cm?
A) 6.55 cm C) 6.55 x 10-5 cm
B) 0.00655 cm D) 6.55 x 10-7 cm
ANS: C DIF: Easy REF: 1.7
KEY: Chemistry | general chemistry | general concepts | measurement | dimensional analysis MSC: Quantitative
110. Which separation technique is based on differences in the volatility of the substances to be separated?
A) filtration C) solvent extraction
B) distillation D) paper chromatography
ANS: B DIF: Easy REF: 1.1
KEY: Chemistry | general chemistry | general concepts | matter | separation
MSC: Conceptual

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