Chemistry: A Molecular Approach, 2e

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Chemistry: A Molecular Approach, 2e - Chapter 1

Chemistry: A Molecular Approach, 2e (Tro)
Chapter 1 Matter, Measurement, and Problem Solving
Mastering Chemistry

Multiple Choice Questions

1) Molecules can be described as
A) mixtures of two or more pure substances.
B) mixtures of two or more elements that has a specific ratio between components.
C) two or more atoms chemically joined together.
D) heterogeneous mixtures.
E) homogeneous mixtures.
Answer: See Attachment
Diff: 1 Page Ref: 1.1

2) Give the composition of water.
A) two hydrogen atoms and two oxygen atoms
B) one hydrogen atom and one oxygen atom
C) two hydrogen atoms and one oxygen atom
D) one hydrogen atom and two oxygen atoms
Answer: See Attachment
Diff: 1 Page Ref: 1.1

3) Which of the following represents a hypothesis?
A) Sodium reacts with water to form sodium hydroxide and hydrogen gas.
B) Nitrogen gas is a fairly inert substance.
C) Nickel has a silvery sheen.
D) When a substance combusts, it combines with air.
E) When wood burns, heat is given off.
Answer: See Attachment
Diff: 1 Page Ref: 1.2

4) Which of the following represents a valid hypothesis?
A) Neon does not react with oxygen.
B) Sodium metal reacts violently with water.
C) Lead is soft and malleable.
D) Oxygen is a gas at room temperature.
E) Metals tend to lose electrons.
Answer: See Attachment
Diff: 1 Page Ref: 1.2
5) The statement, "In a chemical reaction, matter is neither created nor destroyed" is called
A) the Law of Conservation of Mass.
B) Dalton's Atomic Theory.
C) the Scientific Method.
D) the Law of Multiple Proportions.
E) the Law of Definite Proportions.
Answer: See Attachment
Diff: 1 Page Ref: 1.2

6) Dalton's Atomic Theory states
A) that all elements have several isotopes.
B) that matter is composed of small indestructible particles.
C) that the properties of matter are determined by the properties of atoms.
D) that energy is neither created nor destroyed during a chemical reaction.
E) that an atom is predominantly empty space.
Answer: See Attachment
Diff: 1 Page Ref: 1.2

7) The Scientific Method
A) is just a theory.
B) is a strict set of rules and procedures that lead to inarguable fact.
C) isn't used much in modern chemistry.
D) is based on continued observation and experiment.
E) is a framework for proving an argument you know to be true.
Answer: See Attachment
Diff: 1 Page Ref: 1.2

8) Which of the following statements is TRUE?
A) A scientific law is fact.
B) Once a theory is constructed, it is considered fact.
C) A hypothesis is speculation that is difficult to test.
D) An observation explains why nature does something.
E) A scientific law summarizes a series of related observations.
Answer: See Attachment
Diff: 1 Page Ref: 1.2

9) Identify a liquid.
A) definite volume and definite shape
B) definite volume and no definite shape
C) no definite shape and definite volume
D) no definite shape and no definite volume
Answer: See Attachment
Diff: 1 Page Ref: 1.3
10) Identify a solid.
A) copper
B) oxygen
C) water
D) nitrogen
E) air
Answer: See Attachment
Diff: 1 Page Ref: 1.3

11) Identify a liquid.
A) oxygen
B) copper
C) salt
D) mercury
E) sugar
Answer: See Attachment
Diff: 1 Page Ref: 1.3

12) Which of the following statements about crystalline and amorphous solids is TRUE?
A) A crystalline solid is composed of atoms or molecules arranged with long-range repeating order.
B) An example of a crystalline solid is glass.
C) An example of an amorphous solid is table salt (NaCl).
D) An amorphous solid is composed of atoms or molecules with a majority of its volume empty.
E) All of the above statements are TRUE.
Answer: See Attachment
Diff: 1 Page Ref: 1.3

13) Which of the following statements about the phases of matter is TRUE?
A) In both solids and liquids, the atoms or molecules pack closely to one another.
B) Solids are highly compressible.
C) Gaseous substances have long-range repeating order.
D) There is only one type of geometric arrangement that the atoms or molecules in any solid can adopt.
E) Liquids have a large portion of empty volume between molecules.
Answer: See Attachment
Diff: 1 Page Ref: 1.3
14) Choose the pure substance from the list below.
A) sea water
B) sugar
C) air
D) lemonade
E) milk
Answer: See Attachment
Diff: 1 Page Ref: 1.3

15) Choose the pure substance from the list below.
A) tea
B) a casserole
C) carbon monoxide
D) sugar water
E) pomegranate juice
Answer: See Attachment
Diff: 1 Page Ref: 1.3

16) A substance that can't be chemically broken down into simpler substances is
A) a homogeneous mixture.
B) an element.
C) a heterogeneous mixture.
D) a compound.
E) an electron.
Answer: See Attachment
Diff: 1 Page Ref: 1.3

17) A substance composed of two or more elements in a fixed, definite proportion is
A) a homogeneous mixture.
B) a heterogeneous mixture.
C) a compound.
D) a solution.
E) an alloy.
Answer: See Attachment
Diff: 1 Page Ref: 1.3

18) Choose the element from the list below.
A) sodium chloride
B) water
C) carbon dioxide
D) helium
E) rust
Answer: See Attachment
Diff: 1 Page Ref: 1.3
19) Choose the compound from the list below.
A) magnesium
B) water
C) neon
D) helium
E) lithium
Answer: See Attachment
Diff: 1 Page Ref: 1.3

20) Decanting is
A) a process in which the more volatile liquid is boiled off.
B) dissolving a solid into a liquid.
C) separating a solid from a liquid by pouring off the liquid.
D) pouring a mixture through a filter paper to separate the solid from the liquid.
E) heating a mixture of two solids to fuse them together.
Answer: See Attachment
Diff: 1 Page Ref: 1.3

21) Two or more substances in variable proportions, where the composition is constant throughout are
A) a compound.
B) an element.
C) a heterogeneous mixture.
D) a homogeneous mixture.
E) a crystalline solid.
Answer: See Attachment
Diff: 1 Page Ref: 1.3

22) Two or more substances in variable proportions, where the composition is variable throughout are
A) a solution.
B) a homogeneous mixture.
C) a compound.
D) an amorphous solid..
E) a heterogeneous mixture.
Answer: See Attachment
Diff: 1 Page Ref: 1.3
23) Choose the heterogeneous mixture from the list below.
A) sports drink
B) chlorine gas
C) black coffee
D) chicken noodle soup
E) carbon (graphite)
Answer: See Attachment
Diff: 1 Page Ref: 1.3

24) Choose the homogeneous mixture from the list below.
A) cola
B) mud
C) ice water
D) salad dressing
E) salsa
Answer: See Attachment
Diff: 1 Page Ref: 1.3

25) Choose the homogeneous mixture from the list below.
A) soda (pop)
B) air
C) concrete
D) trail mix
E) blood
Answer: See Attachment
Diff: 2 Page Ref: 1.3

26) Which of the following are examples of physical change?
A) sugar is dissolved in water
B) coffee is brewed
C) dry ice sublimes
D) ice (solid water) melts
E) All of these are examples of physical change.
Answer: See Attachment
Diff: 1 Page Ref: 1.4

27) Which of the following are examples of physical change?
A) dew forms on a blade of grass
B) a halloween light stick glows after shaking
C) an egg solidifies during cooking
D) a hydrogen balloon explodes when contacted with a flame
E) None of the above are physical changes.
Answer: See Attachment
Diff: 1 Page Ref: 1.4
28) Which of the following are examples of a chemical change?
A) copper building materials develop a green patina over time
B) a match burns
C) ethanol evaporates
D) Both A and B are examples of chemical change.
E) All of the above are examples of chemical change.
Answer: See Attachment
Diff: 1 Page Ref: 1.4

29) Which of the following are examples of a chemical change?
A) coffee brewing
B) water boiling
C) leaves turning color in the fall
D) salt dissolves in water
E) None of the above are chemical changes.
Answer: See Attachment
Diff: 1 Page Ref: 1.4

30) A physical change
A) occurs when iron rusts.
B) occurs when sugar is heated into caramel.
C) occurs when glucose is converted into energy within your cells.
D) occurs when water is evaporated.
E) occurs when propane is burned for heat.
Answer: See Attachment
Diff: 1 Page Ref: 1.4

31) A chemical change
A) occurs when methane gas is burned.
B) occurs when paper is shredded.
C) occurs when water is vaporized.
D) occurs when salt is dissolved in water.
E) occurs when powdered lemonade is stirred into water.
Answer: See Attachment
Diff: 1 Page Ref: 1.4

32) Which of the following represents a physical property?
A) Sodium metal is extremely reactive with chlorine gas.
B) Mercury is a silvery liquid at room temperature.
C) Aluminum has a tendency to "rust."
D) Butane is highly flammable.
E) Argon has an unreactive nature.
Answer: See Attachment
Diff: 1 Page Ref: 1.4
33) Which of the following represents a chemical property of hydrogen gas?
A) It is gaseous at room temperature.
B) It is less dense than air.
C) It reacts explosively with oxygen.
D) It is colorless.
E) It is tasteless.
Answer: See Attachment
Diff: 1 Page Ref: 1.4

34) Which of the following statements about energy is FALSE?
A) Energy can be converted from one type to another.
B) The total energy of a system remains constant.
C) Kinetic energy is the energy associated with its position or composition.
D) Energy is the capacity to do work.
E) Systems tend to change in order to lower their potential energy.
Answer: See Attachment
Diff: 1 Page Ref: 1.5

35) Define thermal energy.
A) energy associated with the temperature of an object
B) energy associated with the motion of an object
C) energy associated with the force of an object
D) energy associated with the gravity of an object
Answer: See Attachment
Diff: 1 Page Ref: 1.5

36) All of the following are SI base units of measurement, EXCEPT
A) meter
B) gram
C) second
D) kelvin
E) mole
Answer: See Attachment
Diff: 1 Page Ref: 1.6

37) Identify the unit of measurement which is a SI base unit of measurement.
A) second
B) Celsius
C) cup
D) pound
E) yard
Answer: See Attachment
Diff: 1 Page Ref: 1.6
38) Kilogram is a measure of
A) mass
B) time
C) temperature
D) length
E) volume
Answer: See Attachment
Diff: 1 Page Ref: 1.6

39) Which of the following are examples of intensive properties?
A) density
B) volume
C) mass
D) None of the above are examples of intensive properties.
E) All of the above are examples of intensive properties.
Answer: See Attachment
Diff: 1 Page Ref: 1.6

40) Which of the following are examples of extensive properties?
A) mass
B) color
C) density
D) temperature
E) taste
Answer: See Attachment
Diff: 1 Page Ref: 1.6

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41) Identify the common substance that has the highest density.
A) sugar
B) water
C) glass
D) lead
E) aluminum
Answer: See Attachment
Diff: 1 Page Ref: 1.6

42) Identify the common substance that has the lowest density.
A) ice
B) aluminum
C) copper
D) table salt
E) sugar
Answer: See Attachment
Diff: 1 Page Ref: 1.6
43) If the temperature is 178°F, what is the temperature in degrees celsius?
A) 352°C
B) 451°C
C) 67°C
D) 81.1°C
E) 378°C
Answer: See Attachment
Diff: 2 Page Ref: 1.6

44) If a solution has a temperature of 355 K, what is its temperature in degrees celsius?
A) 165°C
B) 628°C
C) 179°C
D) 279°C
E) 82°C
Answer: See Attachment
Diff: 2 Page Ref: 1.6

45) The outside temperature is 35°C, what is the temperature in K?
A) -238 K
B) 308 K
C) 95 K
D) 31 K
E) 63 K
Answer: See Attachment
Diff: 2 Page Ref: 1.6

46) Determine the density of an object that has a mass of 149.8 g and displaces 12 .1 mL of water when placed in a graduated cylinder.
A) 8.08 g/mL
B) 1.38 g/mL
C) 12 .4 g/mL
D) 18.1 g/mL
E) 11.4 g/mL
Answer: See Attachment
Diff: 2 Page Ref: 1.6
47) Determine the volume of an object that has a mass of 455.6 g and a density of 19.3 g/cm3.
A) 87.9 mL
B) 42 .4 mL
C) 18.5 mL
D) 23.6 mL
E) 31.2 mL
Answer: See Attachment
Diff: 2 Page Ref: 1.6

48) Determine the mass of an object that has a volume of 88.6 mL and a density of 9.77 g/mL.
A) 298 g
B) 1100 g
C) 907 g
D) 568 g
E) 866 g
Answer: See Attachment
Diff: 2 Page Ref: 1.6

49) The outside air temperature is 30°F, what is the temperature in Kelvin?
A) 303 K
B) 307 K
C) 274 K
D) 272 K
Answer: See Attachment
Diff: 3 Page Ref: 1.6

50) The outside temperature is 35°C, what is the temperature in °F?
A) 95°F
B) 31°F
C) 121°F
D) 5.4°F
E) 63°F
Answer: See Attachment
Diff: 3 Page Ref: 1.6

51) A student performs an experiment to determine the density of a sugar solution. She obtains the following results: 1.11 g/mL, 1.81 g/mL, 1.95 g/mL, 1.75 g/mL. If the actual value for the density of the sugar solution is 1.75 g/mL, which statement below best describes her results?
A) Her results are precise, but not accurate.
B) Her results are accurate, but not precise.
C) Her results are both precise and accurate
D) Her results are neither precise nor accurate.
E) It isn't possible to determine with the information given.
Answer: See Attachment
Diff: 1 Page Ref: 1.7

52) A student performs an experiment to determine the density of a sugar solution. She obtains the following results: 1.71 g/mL, 1.73 g/mL, 1.67 g/mL, 1.69 g/mL. If the actual value for the density of the sugar solution is 1.40 g/mL, which statement below best describes her results?
A) Her results are precise, but not accurate.
B) Her results are accurate, but not precise.
C) Her results are both precise and accurate
D) Her results are neither precise nor accurate.
E) It isn't possible to determine with the information given.
Answer: See Attachment
Diff: 1 Page Ref: 1.7

53) A student performs an experiment to determine the density of a sugar solution. She obtains the following results: 1.79 g/mL, 1.81 g/mL, 1.80 g/mL, 1.81 g/mL. If the actual value for the density of the sugar solution is 1.80 g/mL, which statement below best describes her results?
A) Her results are precise, but not accurate.
B) Her results are accurate, but not precise.
C) Her results are both precise and accurate
D) Her results are neither precise nor accurate.
E) It isn't possible to determine with the information given.
Answer: See Attachment
Diff: 1 Page Ref: 1.7

54) Systematic error is defined as
A) error that tends to be too high or too low.
B) error that has equal probability of being too high and too low.
C) error that averages out with repeated trials.
D) error that is random.
Answer: See Attachment
Diff: 1 Page Ref: 1.7

55) Read the water level with the correct number of significant figures.

A) 5 mL
B) 5.3 mL
C) 5.32 mL
D) 5.320 mL
E) 5.3200 mL
Answer: See Attachment
Diff: 2 Page Ref: 1.7

56) Read the temperature with the correct number of significant figures.

A) 87°C
B) 87.2°C
C) 87.20°C
D) 87.200°C
E) 87.2000°C
Answer: See Attachment
Diff: 2 Page Ref: 1.7

57) Read the length of the metal bar with the correct number of significant figures.

A) 20 cm
B) 15 cm
C) 15.0 cm
D) 15.00 cm
E) 15.000 cm
Answer: See Attachment
Diff: 2 Page Ref: 1.7

58) Read the length of the metal bar with the correct number of significant figures.

A) 20 cm
B) 15 cm
C) 15.0 cm
D) 15.00 cm
E) 15.000 cm
Answer: See Attachment
Diff: 2 Page Ref: 1.7

59) How many significant figures are in 1009.630 mL?
A) 3
B) 4
C) 5
D) 6
E) 7
Answer: See Attachment
Diff: 2 Page Ref: 1.7

60) How many significant figures are in 3.408 x 104 m?
A) 3
B) 4
C) 5
D) 7
E) 8
Answer: See Attachment
Diff: 2 Page Ref: 1.7

61) How many significant figures are in the measurement, 463.090 m?
A) 2
B) 3
C) 4
D) 5
E) 6
Answer: See Attachment
Diff: 2 Page Ref: 1.7

62) How many significant figures are in the measurement, 0.0005890 g?
A) 4
B) 5
C) 6
D) 7
E) 8
Answer: See Attachment
Diff: 2 Page Ref: 1.7

63) How many significant figures are in the measurement, 20.300 m?
A) 3
B) 4
C) 5
D) 1
E) 2
Answer: See Attachment
Diff: 2 Page Ref: 1.7

64) What answer should be reported, with the correct number of significant figures, for the following calculation? (433.621 - 333.9) × 11.900
A) 1.19 × 103
B) 1.187 × 103
C) 1.1868 × 103
D) 1.18680 × 103
E) 1.186799 × 103
Answer: See Attachment
Diff: 2 Page Ref: 1.7
65) What answer should be reported, with the correct number of significant figures, for the following calculation? (249.362 + 41) / 63.498
A) 4.6
B) 4.57
C) 4.573
D) 4.5728
E) 4.57277
Answer: See Attachment
Diff: 3 Page Ref: 1.7

66) What answer should be reported, with the correct number of significant figures, for the following calculation? (965.43 × 3.911) + 9413.4136
A) 13189
B) 13189.2
C) 1.32 × 104
D) 1.3 × 104
E) 1.319 × 104
Answer: See Attachment
Diff: 3 Page Ref: 1.7

67) What wavelength of light would you report in units of nm, if the light had a wavelength of 7.60 × 10-10 m?
A) 7.60 × 10-3 nm
B) 7.60 × 10-19 nm
C) 1.32 nm
D) 0.760 nm
E) 760 nm
Answer: See Attachment
Diff: 2 Page Ref: 1.8

68) How many mg does a 433 kg sample contain?
A) 4.33 × 10-4 mg
B) 4.33 × 107 mg
C) 4.33 × 10-3 mg
D) 4.33 × 106 mg
E) 4.33 × 108 mg
Answer: See Attachment
Diff: 2 Page Ref: 1.8
69) How many kL does a 1.25 × 108 cL sample contain?
A) 1.25 × 103 kL
B) 1.25 × 1013 kL
C) 1.25 × 104 kL
D) 1.25 × 1012 kL
E) 1.25 × 102 kL
Answer: See Attachment
Diff: 2 Page Ref: 1.8

70) How many cm3 are contained in 3.77 × 104 mm3?
A) 3.77 × 104 cm3
B) 3.77 × 101 cm3
C) 3.77 × 10-10 cm3
D) 3.77 × 1020 cm3
E) 3.77 × 106 cm3
Answer: See Attachment
Diff: 2 Page Ref: 1.8

71) How many mL are in 2.54 L?
A) 2.54 × 10-3 mL
B) 2.54 × 101 mL
C) 2.54 × 103 mL
D) 2.54 × 10-1 mL
E) 2.54 × 102 mL
Answer: See Attachment
Diff: 2 Page Ref: 1.8

72) How many mm are in 3.20 cm?
A) 3.20 × 10 1 mm
B) 3.20 × 10 -1 mm
C) 3.20 × 10 -2 mm
D) 3.20 × 10 2 mm
E) 3.20 × 10 3 mm
Answer: See Attachment
Diff: 2 Page Ref: 1.8
73) A recipe requires 1.89 liters of milk for a soup base. How many quarts are needed?
A) 1.79 qts
B) 2.00 qts
C) 1.89 qts
D) 2.10 qts
E) 2.15 qts
Answer: See Attachment
Diff: 2 Page Ref: 1.8

74) If an object has a density of 8.65 g/cm3, what is its density in units of kg/m3?
A) 8.65 × 10-3 kg/m3
B) 8.65 × 10-7 kg/m3
C) 8.65 × 103 kg/m3
D) 8.65 × 101 kg/m3
E) 8.65 × 10-1 kg/m3
Answer: See Attachment
Diff: 3 Page Ref: 1.8

75) If a room requires 25.4 square yards of carpeting, what is the area of the floor in units of ft2? (3 ft = 1 yd)
A) 76.2 ft2
B) 8.47 ft2
C) 282 ft2
D) 229 ft2
E) 68.6 ft2
Answer: See Attachment
Diff: 3 Page Ref: 1.8

76) A person is 64.00 inches tall. How tall is she in cm?
A) 162.6 cm
B) 25.20 cm
C) 25.60 cm
D) 192.0 cm
E) 128.0 cm
Answer: See Attachment
Diff: 3 Page Ref: 1.8
77) A person weighs 77.1 kg. What is his weight in pounds?
A) 154 pounds
B) 170 pounds
C) 35.0 pounds
D) 162 pounds
Answer: See Attachment
Diff: 3 Page Ref: 1.8

78) A person is 1.890 yards tall. How tall is he in cm?
A) 172.8 cm
B) 1.728 cm
C) 2.232 cm
D) 4.801 cm
E) 14.40 cm
Answer: See Attachment
Diff: 3 Page Ref: 1.8

79) An alligator is 244.0 cm long. How long is he in feet?
A) 8.00 feet
B) 96.0 ft
C) 20.3 ft
D) 6.00 ft
E) 9.00 ft
Answer: See Attachment
Diff: 3 Page Ref: 1.8

80) How many cm are in 22.2 ft?
A) 4.70 cm
B) 105 cm
C) 56.4 cm
D) 677 cm
E) 0.728 cm
Answer: See Attachment
Diff: 3 Page Ref: 1.8

81) If the walls in a room are 955 square feet in area, and a gallon of paint covers 15 square yards, how many gallons of paint are needed for the room? (3 ft = 1 yd)
A) 47 gallons
B) 21 gallons
C) 7.1 gallons
D) 24 gallons
E) 2.3 gallons
Answer: See Attachment
Diff: 4 Page Ref: 1.8
82) Gas is sold for $1.399 per liter in Toronto, Canada. Your car needs 12.00 gallons. How much will your credit card be charged in Canadian dollars?
A) $16.79
B) $67.15
C) $4.44
D) $63.54
Answer: See Attachment
Diff: 5 Page Ref: 1.8

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Algorithmic Questions

1) Crude oil is an example of
A) a compound.
B) an element.
C) a heterogeneous mixture.
D) a homogeneous mixture.
Answer: See Attachment
Diff: 2 Page Ref: 1.3

2) Gasoline is an example of
A) a compound.
B) an element.
C) a heterogeneous mixture.
D) a homogeneous mixture.
Answer: See Attachment
Diff: 2 Page Ref: 1.3

3) Gold is an example of
A) a compound.
B) an element.
C) a heterogeneous mixture.
D) a homogeneous mixture.
Answer: See Attachment
Diff: 2 Page Ref: 1.3

4) Ammonia is an example of
A) a compound.
B) an element.
C) a heterogeneous mixture.
D) a homogeneous mixture.
Answer: See Attachment
Diff: 2 Page Ref: 1.3
5) What symbol is used to represent the factor 101?
A) M
B) da
C) ?
D) n
Answer: See Attachment
Diff: 1 Page Ref: 1.6

6) Which of the following is the smallest volume?
A) 44 cm3
B) 1.0 dL
C) 5.5 × 103 mL
D) 1.0 × 108 nL
Answer: See Attachment
Diff: 1 Page Ref: 1.6

7) What symbol is used to represent the factor 10-1?
A) M
B) m
C) ?
D) d
Answer: See Attachment
Diff: 1 Page Ref: 1.6

8) The factor 1,000,000 corresponds to which prefix?
A) deka
B) deci
C) mega
D) milli
Answer: See Attachment
Diff: 1 Page Ref: 1.6

9) The factor 10-3 corresponds to which prefix?
A) deka
B) deci
C) milli
D) centi
Answer: See Attachment
Diff: 1 Page Ref: 1.6
10) What decimal power does the abbreviation f represent?
A) 1 × 106
B) 1 × 103
C) 1 × 10-1
D) 1 × 10-15
E) 1 × 10-12
Answer: See Attachment
Diff: 1 Page Ref: 1.6

11) What decimal power does the abbreviation pico represent?
A) 1 × 106
B) 1 × 109
C) 1 × 10-1
D) 1 × 10-12
E) 1 × 10-15
Answer: See Attachment
Diff: 1 Page Ref: 1.6

12) What is the volume (in cm3) of a 63.4 g piece of metal with a density of 12.86 g/cm3?
A) 4.93
B) 19.5
C) .425
D) 6.65
E) none of the above
Answer: See Attachment
Diff: 2 Page Ref: 1.6

13) A piece of metal ore weighs 8.25 g. When a student places it into a graduated cylinder containing water, the liquid level rises from 21.25 mL to 26.47 mL. What is the density of the ore?
A) 0.3 12 g/mL
B) 0. 633 g/mL
C) 1. 58 g/mL
D) 3.21 g/mL
Answer: See Attachment
Diff: 2 Page Ref: 1.6
14) A mass of mercury occupies 0. 950 L. What volume would an equal mass of ethanol occupy? The density of mercury is 13.546 g/mL and the density of ethanol is 0.789 g/mL.
A) 0.0 553 L
B) 0. 0613 L
C) 16.3 L
D) 18.1 L
Answer: See Attachment
Diff: 2 Page Ref: 1.6

15) If the melting point of vanadium metal is 1910°C, what is its melting point in Kelvin?
A) 1029 K
B) 1637 K
C) 2183 K
D) 3470 K
Answer: See Attachment
Diff: 3 Page Ref: 1.6

16) Which of the following is the lowest temperature?
A) 42°C
B) 57°F
C) 318 K
D) All of these temperatures are all equal.
Answer: See Attachment
Diff: 3 Page Ref: 1.6

17) How many significant figures are in the measurement 5.34 g?
A) 1
B) 2
C) 4
D) 3
E) 5
Answer: See Attachment
Diff: 1 Page Ref: 1.7

18) The correct answer (reported to the proper number of significant figures) to the following is __________.

    11.5 × 8.78 = __________

Answer: 101
Diff: 2 Page Ref: 1.7
19) Round the following number to four significant figures and express the result in standard exponential notation:     229.613
A) 0.2296 × 103
B) 229.6
C) 2.296 × 10-2
D) 2.296 × 102
E) 22.96 × 10-1
Answer: See Attachment
Diff: 2 Page Ref: 1.7

20) Which of the following numbers has the greatest number of significant figures?
A) 0. 5070
B) 0 .201
C) 418000
D) 6.02 × 1024
Answer: See Attachment
Diff: 2 Page Ref: 1.7

21) How many of the following numbers contain 3 significant figures?
0. 408    9.040   0.0 400    9.05 × 1024
A) one
B) two
C) three
D) four
Answer: See Attachment
Diff: 2 Page Ref: 1.7

22) How many significant figures are there in the answer to the following problem?
( 9.992 × 3.200) + 0. 610 = ?
A) one
B) two
C) three
D) four
Answer: See Attachment
Diff: 2 Page Ref: 1.7
23) How many significant figures are there in the answer for the following problem?
56.4 + 0. 8822 + 21 = ?
A) one
B) two
C) three
D) four
Answer: See Attachment
Diff: 2 Page Ref: 1.7

24) How many significant figures are there in the answer for the following problem?

A) one
B) two
C) three
D) four
Answer: See Attachment
Diff: 2 Page Ref: 1.7

25) An acetylene molecule contains 2 atoms of carbon. The number 2 represents how many significant figures?
A) one
B) two
C) three
D) infinite
Answer: See Attachment
Diff: 2 Page Ref: 1.7

26) Round off 00 907506 to four significant figures.
A) 00 91
B) 9076
C) 9100
D) 9.075 × 105
Answer: See Attachment
Diff: 2 Page Ref: 1.7
27) The width, length, and height of a large, custom-made shipping crate are 1.22 m, 3.22 m, and 0.83 m, respectively. The volume of the box using the correct number of significant figures is __________ m3.
A) 3.26057
B) 3.3
C) 3.26
D) 3.261
E) 3.2606
Answer: See Attachment
Diff: 2 Page Ref: 1.7

28) The correct answer (reported to the proper number of significant figures) to the following is __________.

   ( 1815 - 1806) × ( 9.11 × 7.92) = __________

Answer: 600
Diff: 4 Page Ref: 1.7

29) Without using a calculator, solve the following problem:

A) 1 × 10-4
B) 1 × 105
C) 1 × 1023
D) 1 × 1032
Answer: See Attachment
Diff: 1 Page Ref: 1.8

30) Without using a calculator, solve the following problem:

A) 1 × 106
B) 1 × 100
C) 1 × 10-12
D) 1 × 10-18
Answer: See Attachment
Diff: 1 Page Ref: 1.8
31) Which of the following is the greatest mass?
A) 1000 ?g
B) 1.000 × 10-4 kg
C) 1.000 × 10-4 cg
D) 1.000 × 10-8 Mg
Answer: See Attachment
Diff: 2 Page Ref: 1.8

32) The mass of a proton is 1.67 × 10-27 kg. What is the mass of a proton in picograms?
A) 1.67 × 10- 18 pg
B) 1.67 × 10- 15 pg
C) 1.67 × 10- 12 pg
D) 1.67 × 10- 9 pg
Answer: See Attachment
Diff: 2 Page Ref: 1.8

33) The mass of a single zinc atom is 1. 086 × 10-22 g. This is the same mass as
A) 1.086 × 10-16 mg.
B) 1.086 × 10-25 kg.
C) 1.086 × 10-28 ?g.
D) 1.086 × 10-31 ng.
Answer: See Attachment
Diff: 2 Page Ref: 1.8

34) A student weighed 30.00 ?g of sulfur in the lab. This is the same mass as
A) 3.000 × 10- 8 g.
B) 3.000 × 10- 5 kg.
C) 3.000 × 10-5 mg.
D) 3.000 × 104 ng.
Answer: See Attachment
Diff: 2 Page Ref: 1.8

35) Convert 4 ?m to meters.
A) 4 × 10-9 m
B) 4 × 10-6 m
C) 4 × 10-3 m
D) 4 × 106 m
Answer: See Attachment
Diff: 2 Page Ref: 1.8
36) The average distance between nitrogen and oxygen atoms is 115 pm in a compound called nitric oxide. What is this distance in millimeters?
A) 1.15 × 10- 8 mm
B) 1.15 × 10- 7 mm
C) 1.15 × 1013 mm
D) 1.15 × 1017 mm
Answer: See Attachment
Diff: 2 Page Ref: 1.8

37) The diameter of an atom is approximately 1 × 10-10 m. What is the diameter in millimeters?
A) 1 × 10- 16 mm
B) 1 × 10- 13 mm
C) 1 × 10-7 mm
D) 1 × 10-4 mm
Answer: See Attachment
Diff: 2 Page Ref: 1.8

38) Which of the following volumes is equal to 40 mL?
A) 40 cm3
B) 40 dm3
C) 0. 40 L
D) 0.000 40 kL
Answer: See Attachment
Diff: 2 Page Ref: 1.8

39) Convert 10 cm3 to m3.
A) 1 × 10- 5 m3
B) 1 × 10-1 m3
C) 1 × 103 m3
D) 1 × 107 m3
Answer: See Attachment
Diff: 2 Page Ref: 1.8

40) Convert 35 m3 to liters.
A) 3.5 × 10-2 L
B) 3.5 L
C) 3.5 × 102 L
D) 3.5 × 104 L
Answer: See Attachment
Diff: 2 Page Ref: 1.8

41) 38.325 lbs = __________ grams. (1 lb = 454 g)
Answer: 17400
Diff: 4 Page Ref: 1.8

42) If 1.4% of the mass of a human body is calcium, how many kilograms of calcium are there in a 185-pound man?
A) 1.2 kg Ca
B) 5.7 kg Ca
C) 1.2 × 102 kg Ca
D) 5.7 × 102 kg
Answer: See Attachment
Diff: 5 Page Ref: 1.8

43) A fishing boat accidentally spills 3.0 barrels of diesel oil into the ocean. Each barrel contains 42 gallons. If the oil film on the ocean is 2.5 × 102 nm thick, how many square meters will the oil slick cover?
A) 1.9 × 10-3 m2
B) 1.9 × 106 m2
C) 1.9 × 107 m2
D) none of these
Answer: See Attachment
Diff: 5 Page Ref: 1.8

44) Because of the high heat and low humidity in the summer in Death Valley, California, a visitor requires about one quart of water for every two miles traveled on foot. Calculate the approximate number of liters required for a person to walk 10. kilometers in Death Valley.
A) 2.9 L
B) 12 L
C) 30 L
D) 47 L
Answer: See Attachment
Diff: 5 Page Ref: 1.8

45) The estimated costs for remodelling the interior of an apartment are: three 1-gallon cans of paint at $13.22 each , two paint brushes at $9.53 each , and $135 for a helper. The total estimated cost with the appropriate significant figures is
A) 193.72
B) 1.9 × 102
C) 194
D) 2 × 102
E) 193.7
Answer: See Attachment
Diff: 5 Page Ref: 1.8

46) How many liters of wine can be held in a wine barrel whose capacity is 26.0 gal?
1 gal = 4 qt = 3.7854 L.
A) 1.46 × 10-4
B) 0.146
C) 98.4
D) 6.87 × 103
E) 6.87
Answer: See Attachment
Diff: 5 Page Ref: 1.8

47) The recommended adult dose of Elixophyllin , a drug used to treat asthma, is 6.00 mg/kg of body mass. Calculate the dose in milligrams for a 115-lb person. 1 lb = 453.59 g.
A) 24
B) 1,521
C) 1.5
D) 313
E) 3.1 × 105
Answer: See Attachment
Diff: 5 Page Ref: 1.8
48) The density of air under ordinary conditions at 25°C is 1.19 g/L. How many kilograms of air are in a room that measures and has an 10.0 ft ceiling? (exactly);
A) 3.66
B) 0.152
C) 4.08 × 104
D) 0.0962
E) 40.8
Answer: See Attachment
Diff: 5 Page Ref: 1.8

49) How many liters of air are in a room that measures 10.0 ft × 11.0 ft and has an 8.00 ft ceiling? 1 in. = 2.54 cm (exactly); 1 L = 103 cm3
A) 2.49 × 104
B) 92.8
C) 26.8
D) 2.68 × 107
E) 8.84 × 105
Answer: See Attachment
Diff: 5 Page Ref: 1.8

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