Chemistry: The Central Science, 13th Edition Test Bank

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Chemistry: The Central Science, 13e (Brown et al.)
Chapter 1 Introduction: Matter and Measurement
1.1 Multiple-Choice Questions
1) What is the physical state in which matter has no specific shape but does have a specific volume?
A) gas
B) solid
C) liquid
D) salts
E) ice
Answer: C
Diff: 1 Var: 1 Page Ref: Sec. 1.2
LO: 1.2
GO: G2
2) The law of constant composition applies to ________.
A) solutions
B) heterogeneous mixtures
C) compounds
D) homogeneous mixtures
E) solids
Answer: C
Diff: 1 Var: 1 Page Ref: Sec. 1.2
LO: 1.2
GO: G2
3) A combination of sand, salt, and water is an example of a ________.
A) homogeneous mixture
B) heterogeneous mixture
C) compound
D) pure substance
E) solid
Answer: B
Diff: 1 Var: 1 Page Ref: Sec. 1.2
LO: 1.2
GO: G2

4) A small amount of salt dissolved in water is an example of a ________.
A) homogeneous mixture
B) heterogeneous mixture
C) compound
D) pure substance
E) solid
Answer: A
Diff: 1 Var: 1 Page Ref: Sec. 1.2
LO: 1.2
GO: G2
5) Which one of the following has the element name and symbol correctly matched?
A) S, sodium
B) Tn, tin
C) Fe, iron
D) N, neon
E) B, bromine
Answer: C
Diff: 1 Var: 1 Page Ref: Sec. 1.2
LO: 1.2
GO: G2
6) Which one of the following elements has a symbol that is not derived from its foreign name?
A) tin
B) aluminum
C) mercury
D) copper
E) lead
Answer: B
Diff: 2 Var: 1 Page Ref: Sec. 1.2
LO: 1.2
GO: G2
7) Which one of the following is often easily separated into its components by simple techniques such as
filtering or decanting?
A) heterogeneous mixture
B) compounds
C) homogeneous mixture
D) elements
E) solutions
Answer: A
Diff: 2 Var: 1 Page Ref: Sec. 1.2
LO: 1.2
GO: G2

8) Which states of matter are significantly compressible?
A) gases only
B) liquids only
C) solids only
D) liquids and gases
E) solids and liquids
Answer: A
Diff: 1 Var: 1 Page Ref: Sec. 1.2
LO: 1.2
GO: G2
9) For which of the following can the composition vary?
A) pure substance
B) element
C) both homogeneous and heterogeneous mixtures
D) homogeneous mixture
E) heterogeneous mixture
Answer: C
Diff: 2 Var: 1 Page Ref: Sec. 1.2
LO: 1.2
GO: G2
10) If matter is uniform throughout and cannot be separated into other substances by physical means, it is
________.
A) a compound
B) either an element or a compound
C) a homogeneous mixture
D) a heterogeneous mixture
E) an element
Answer: B
Diff: 2 Var: 1 Page Ref: Sec. 1.2
LO: 1.2
GO: G2
11) An element cannot ________.
A) be part of a heterogeneous mixture
B) be part of a homogeneous mixture
C) be separated into other substances by chemical means
D) interact with other elements to form compounds
E) be a pure substance
Answer: C
Diff: 2 Var: 1 Page Ref: Sec. 1.2
LO: 1.2
GO: G2

12) Homogeneous mixtures are also known as ________.
A) solids
B) compounds
C) elements
D) substances
E) solutions
Answer: E
Diff: 1 Var: 1 Page Ref: Sec. 1.2
LO: 1.2
GO: G2
13) The law of constant composition says ________.
A) that the composition of a compound is always the same
B) that all substances have the same composition
C) that the composition of an element is always the same
D) that the composition of a homogeneous mixture is always the same
E) that the composition of a heterogeneous mixture is always the same
Answer: A
Diff: 1 Var: 1 Page Ref: Sec. 1.2
LO: 1.2
GO: G2
14) Which of the following is an illustration of the law of constant composition?
A) Water boils at 100 °C at 1 atm pressure.
B) Water is 11% hydrogen and 89% oxygen by mass.
C) Water can be separated into other substances by a chemical process.
D) Water and salt have different boiling points.
E) Water is a compound.
Answer: B
Diff: 2 Var: 1 Page Ref: Sec. 1.2
LO: 1.2
GO: G2
15) In the following list, only ________ is not an example of a chemical reaction.
A) dissolution of a penny in nitric acid
B) the condensation of water vapor
C) a burning candle
D) the formation of polyethylene from ethylene
E) the rusting of iron
Answer: B
Diff: 2 Var: 1 Page Ref: Sec. 1.3
GO: G2

16) Gases and liquids share the property of ________.
A) compressibility
B) definite volume
C) incompressibility
D) indefinite shape
E) definite shape
Answer: D
Diff: 1 Var: 1 Page Ref: Sec. 1.2
LO: 1.2
GO: G2
17) Of the following, only ________ is a chemical reaction.
A) melting of lead
B) dissolving sugar in water
C) tarnishing of silver
D) crushing of stone
E) dropping a penny into a glass of water
Answer: C
Diff: 2 Var: 1 Page Ref: Sec. 1.3
GO: G2
18) Which one of the following is not an intensive property?
A) density
B) temperature
C) melting point
D) mass
E) boiling point
Answer: D
Diff: 2 Var: 1 Page Ref: Sec. 1.3
GO: G2
19) Which one of the following is an intensive property?
A) mass
B) temperature
C) heat content
D) volume
E) amount
Answer: B
Diff: 2 Var: 1 Page Ref: Sec. 1.3
GO: G2

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20) Of the following, only ________ is an extensive property.
A) density
B) volume
C) boiling point
D) freezing point
E) temperature
Answer: B
Diff: 2 Var: 1 Page Ref: Sec. 1.3
GO: G2
21) Which of the following are chemical processes?
1. rusting of a nail
2. freezing of water
3. decomposition of water into hydrogen and oxygen gases
4. compression of oxygen gas
A) 2, 3, 4
B) 1, 3, 4
C) 1, 3
D) 1, 2
E) 1, 4
Answer: C
Diff: 3 Var: 1 Page Ref: Sec. 1.3
GO: G2
22) In the following list, only ________ is not an example of a chemical reaction.
A) burning a plastic water bottle
B) the production of hydrogen gas from water
C) the tarnishing of a copper penny
D) chopping a log into sawdust
E) charging a cellular phone
Answer: D
Diff: 2 Var: 1 Page Ref: Sec. 1.3
GO: G2
23) Of the following, ________ is the largest mass.
A) 25 kg
B) 2.5 × 10-2 mg
C) 2.5 × 1015 pg
D) 2.5 × 109 fg
E) 2.5 × 1010 ng
Answer: A
Diff: 2 Var: 1 Page Ref: Sec. 1.4
LO: 1.4
GO: G2

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24) Which one of the following is the highest temperature?
A) 38 °C
B) 96 °F
C) 302 K
D) none of the above
E) the freezing point of water
Answer: A
Diff: 3 Var: 1 Page Ref: Sec. 1.4
LO: 1.4
GO: G2
25) Which of the following is (are) the lowest temperature?
A) The freezing point of water
B) 5 °C
C) 30 °F
D) 280 K
E) A and D
Answer: C
Diff: 3 Var: 1 Page Ref: Sec 1.4
LO: 1.4
GO: G2
26) Which one of the following is true about the liter?
A) It is the SI base unit for volume.
B) It is equivalent to a cubic decimeter.
C) It is slightly smaller than a quart.
D) It contains 106 cubic centimeters.
E) It is slightly smaller than a gallon.
Answer: B
Diff: 4 Var: 1 Page Ref: Sec. 1.4
LO: 1.4
GO: G2
27) Of the objects below, ________ is the most dense.
A) an object with a volume of 2.5 L and a mass of 12.5 kg
B) an object with a volume of 139 mL and a mass of 93 g
C) an object with a volume of 0.00212 m3 and a mass of 4.22 × 104 mg
D) an object with a volume of 3.91 × 10-24 nm3 and a mass of 7.93 × 10-1 ng
E) an object with a volume of 13 dm3 and a mass of 1.29 × 103 g
Answer: D
Diff: 4 Var: 1 Page Ref: Sec. 1.4
LO: 1.4, 1.6
GO: G4

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28) Which calculation clearly shows a conversion between temperatures in degrees Celsius, °C, and
temperature in Kelvins, K?
A) K = °C + 273.15
B) K = 273.15 - °C
C) K = [°C - 32] / 1.8
D) K = [°C + 32] × 1.8
E) K = °C
Answer: A
Diff: 1 Var: 1 Page Ref: Sec. 1.4
LO: 1.4, 1.6
GO: G4
29) You have to calculate the mass of a 30.0 mL liquid sample with density of 1.52 g/mL, but you have
forgotten the formula. Which way of reasoning would help you in finding the correct mass?
A) If 1 mL of a liquid has the mass of 1.52 g, then 30.0 mL has the mass of __________ g.
B) If 1.52 mL of a liquid has the mass of 1 g, then 30.0 mL has the mass of __________ g.
Answer: A
Diff: 2 Var: 1 Page Ref: Sec. 1.4
LO: 1.4, 1.6
GO: G4
30) You have to calculate the volume of a gas sample with mass of 1.000 × 103 g and density of 1.027 g/L,
but you have forgotten the formula. Which way of reasoning would help you in finding the correct mass?
A) If 1.027 g of a gas takes up a volume of 1 L, then 1.000 × 103 g of the same gas takes up a volume of
__________.
B) If 1.027 L of gas has a mass of 1 g, then __________ L has the mass of 1.000 × 103 g.
Answer: A
Diff: 2 Var: 1 Page Ref: Sec. 1.4
LO: 1.4, 1.6
GO: G4
31) Osmium has a density of 22.6 g/cm3. What volume (in cm3) would be occupied by a 21.8 g sample of
osmium?
A) 0.965
B) 1.04
C) 493
D) 2.03 × 10-3
E) 2.03 × 103
Answer: A
Diff: 2 Var: 1 Page Ref: Sec. 1.4
LO: 1.4, 1.6
GO: G4

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32) Iron has a density of 7.9 g/cm3. What is the mass of a cube of iron with the length of one side equal to
55.0 mm?
A) 2.1 × 104 g
B) 4.3 × 102 g
C) 1.3 × 103 g
D) 1.4 g
E) 2.3 × 10-2 g
Answer: C
Diff: 3 Var: 1 Page Ref: Sec. 1.4
LO: 1.4, 1.6
GO: G4
33) Precision refers to ________.
A) how close a measured number is to other measured numbers
B) how close a measured number is to the true value
C) how close a measured number is to the calculated value
D) how close a measured number is to zero
E) how close a measured number is to infinity
Answer: A
Diff: 1 Var: 1 Page Ref: Sec. 1.5
LO: 1.5
GO: G2
34) Accuracy refers to ________.
A) how close a measured number is to zero
B) how close a measured number is to the calculated value
C) how close a measured number is to other measured numbers
D) how close a measured number is to the true value
E) how close a measured number is to infinity
Answer: D
Diff: 1 Var: 1 Page Ref: Sec. 1.5
LO: 1.5
GO: G2
35) Which of the following has the same number of significant figures as the number 1.00310?
A) 1 × 106
B) 199.791
C) 8.66
D) 5.119
E) 100
Answer: B
Diff: 2 Var: 1 Page Ref: Sec. 1.5
LO: 1.5
GO: G2

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36) Acceleration due to gravity of a free-falling object is 9.8 m/s2. Express this in millimeters/millisecond2.
A) 9.8 × 10-9
B) 9.8 × 103
C) 9.8 × 10-6
D) 9.8 × 106
E) 9.8 × 10-3
Answer: E
Diff: 2 Var: 1 Page Ref: Sec. 1.6
LO: 1.4, 1.6
GO: G4
37) If an object is accelerating at a rate of 25 m/s2, how long (in seconds) will it take to reach a speed of
550 m/s? (Assume an initial velocity of zero.)
A) 22
B) 1.4 × 104
C) 0.045
D) 1.2 × 104
E) 2.3 × 102
Answer: A
Diff: 4 Var: 1 Page Ref: Sec. 1.6
LO: 1.4, 1.6
GO: G4
38) If an object is accelerating at a rate of 25 m/s2, how fast will it be moving (in m/s) after 1.50 min?
(Assume an initial velocity of zero.)
A) 17
B) 3.6
C) 38
D) 2.3 × 103
E) 0.060
Answer: D
Diff: 4 Var: 1 Page Ref: Sec. 1.6
LO: 1.4, 1.6
GO: G4

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39) A wooden object has a mass of 10.782 g and occupies a volume of 13.72 mL. What is the density of the
object determined to an appropriate number of significant figures?
A) 8 × 10-1 g/mL
B) 7.9 × 10-1 g/mL
C) 7.86 × 10-1 g/mL
D) 7.859 × 10-1 g/mL
E) 7.8586 × 10-1 g/mL
Answer: D
Diff: 2 Var: 1 Page Ref: Sec. 1.4, 1.5
LO: 1.5
GO: G4
40) Expressing a number in scientific notation ________.
A) changes its value
B) removes ambiguity as to the significant figures
C) removes significant zeros
D) allows to increase the number's precision
E) all of the above
Answer: B
Diff: 2 Var: 1 Page Ref: Sec. 1.5
LO: 1.5
GO: G4
41) The number with the most significant zeros is ________.
A) 0.00002510
B) 0.02500001
C) 250000001
D) 2.501 × 10-7
E) 2.5100000
Answer: C
Diff: 1 Var: 1 Page Ref: Sec. 1.5
LO: 1.5
GO: G4
42) How many significant figures should be retained in the result of the following calculation?
12.00000 × 0.9893 + 13.00335 × 0.0107
A) 2
B) 3
C) 4
D) 5
E) 6
Answer: B
Diff: 2 Var: 1 Page Ref: Sec. 1.5
LO: 1.5
GO: G4
43) In which one of the following numbers are all of the zeros significant?

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A) 100.090090
B) 0.143290
C) 0.05843
D) 0.1000
E) 00.0030020
Answer: A
Diff: 1 Var: 1 Page Ref: Sec. 1.5
LO: 1.5
GO: G4
44) Which of the following is not an exact number?
A) the number of seconds in a year
B) the number of millimeters in a kilometer
C) the number of liters in a gallon
D) the number of centimeters in an inch
E) the number of grams in a kilogram
Answer: C
Diff: 1 Var: 1 Page Ref: Sec. 1.5
LO: 1.5
GO: G4
45) Round the number 0.007222 to three significant figures.
A) 0.007
B) 0.00722
C) 0.0072
D) 0.00723
E) 0.007225
Answer: B
Diff: 1 Var: 1 Page Ref: Sec. 1.5
LO: 1.5
GO: G4
46) Round the number 3456.5 to two significant figures.
A) 3400.0
B) 3400
C) 3000
D) 3500
E) 3000.0
Answer: D
Diff: 1 Var: 1 Page Ref: Sec. 1.5
LO: 1.5
GO: G4

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47) One angstrom, symbolized Å, is 10-10 m. 1 cm3 = ________ Å3.
A) 1024
B) 10-24
C) 1030
D) 10-30
E) 10-9
Answer: A
Diff: 3 Var: 1 Page Ref: Sec. 1.6
LO: 1.4, 1.6
GO: G4
1.2 Bimodal Questions
1) Solids have a ________ shape and are not appreciably ________.
A) definite, compressible
B) definite, incompressible
C) indefinite, compressible
D) indefinite, incompressible
E) sharp, convertible
Answer: A
Diff: 1 Var: 1 Page Ref: Sec. 1.2
LO: 1.2
GO: G2
2) ________ is the chemical symbol for elemental sodium.
A) S
B) W
C) So
D) Na
E) Sn
Answer: D
Diff: 1 Var: 1 Page Ref: Sec. 1.2
LO: 1.2
GO: G2
3) If matter is uniform throughout and cannot be separated into other substances by physical processes,
but can be decomposed into other substances by chemical processes, it is called a(n) ________.
A) heterogeneous mixture
B) element
C) homogeneous mixture
D) compound
E) mixture of elements
Answer: D
Diff: 1 Var: 1 Page Ref: Sec. 1.2
LO: 1.2
GO: G2
4) A separation process that depends on differing abilities of substances to form gases is called ________.

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A) filtration
B) solvation
C) distillation
D) chromatography
E) All of the above are correct.
Answer: C
Diff: 2 Var: 1 Page Ref: Sec. 1.3
GO: G2
5) The initial or tentative explanation of an observation is called a(n) ________.
A) law
B) theory
C) hypothesis
D) experiment
E) test
Answer: C
Diff: 2 Var: 1 Page Ref: Sec. 1.4
GO: G1
6) A concise verbal statement or mathematical equation that summarizes a broad variety of observations
and experiences is called a(n) ________.
A) law
B) theory
C) hypothesis
D) experiment
E) test
Answer: A
Diff: 2 Var: 1 Page Ref: Sec. 1.4
GO: G1
7) The SI unit for mass is ________.
A) kilogram
B) gram
C) pound
D) troy ounce
E) none of the above
Answer: A
Diff: 1 Var: 1 Page Ref: Sec. 1.4
LO: 1.4
GO: G2

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8) A one degree of temperature difference is the smallest on the ________ temperature scale.
A) Kelvin
B) Celsius
C) Fahrenheit
D) Kelvin and Celsius
E) Fahrenheit and Celsius
Answer: C
Diff: 3 Var: 1 Page Ref: Sec. 1.4
LO: 1.4
GO: G2
9) ________ is the abbreviation for the prefix mega-.
A) k
B) m
C) M
D) n
E) d
Answer: C
Diff: 1 Var: 1 Page Ref: Sec. 1.4
LO: 1.4
GO: G2
10) ________ is the abbreviation for the prefix milli-.
A) k
B) m
C) M
D) n
E) d
Answer: B
Diff: 1 Var: 1 Page Ref: Sec. 1.4
LO: 1.4
GO: G2
11) A common English set of units for expressing velocity is miles/hour. The SI unit for velocity is
________.
A) km/hr
B) km/s
C) m/hr
D) m/s
E) cm/s
Answer: D
Diff: 2 Var: 1 Page Ref: Sec. 1.4
LO: 1.4
GO: G2

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