General, Organic & Biological Chemistry, 5e (Timberlake)
Chapter 2 Chemistry and Measurements
2.1 Multiple-Choice Questions
1) The metric base unit for length is the
A) meter.
B) inch.
C) millimeter.
D) kilometer.
E) foot.
2) The metric unit for volume is the
A) meter.
B) quart.
C) liter.
D) pint.
E) centimeter.
3) Which of the following is the basic unit of mass in the SI?
A) pound
B) kilogram
C) milligram
D) microgram
E) gram
4) Which of the following is a measurement of mass in the metric system?
A) milliliter
B) centimeter
C) kilogram
D) Celsius
E) meter
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5) Which of the following is a measurement of temperature in the metric system?
A) oz
B) lb
C) Celsius
D) kilogram
E) meter
6) A value of 25 °C is a measurement of
A) distance.
B) volume.
C) temperature.
D) mass.
E) density.
7) A value of 36 mL is a measure of
A) density.
B) mass.
C) temperature.
D) volume.
E) distance.
8) A value of 345 cm is a measure of
A) density.
B) mass.
C) temperature.
D) volume.
E) distance.
9) The amount of space occupied by a substance is its
A) mass.
B) density.
C) weight.
D) length.
E) volume.
10) The measurement of the gravitational pull on an object is its
A) volume.
B) weight.
C) mass.
D) length.
E) size.
11) Significant figures are important because they indicate
A) the accuracy of a measurement.
B) the number of digits on a calculator.
C) the number of measurements.
D) the precision of a measurement.
E) the accuracy of the conversion factor.
12) Which of the following measurements has three significant figures?
A) 0.005 m
B) 510 m
C) 0.510 m
D) 0.051 m
E) 5100 m
13) Which of the following measured numbers contains the designated CORRECT number of significant
figures?
A) 0.04300 5 significant figures
B) 0.00302 2 significant figures
C) 156 000 3 significant figures
D) 1.04 2 significant figures
E) 3.0650 4 significant figures
14) The number of significant figures in the measurement of 45.030 mm is
A) none.
B) three.
C) four.
D) five.
E) six.
15) How many significant figures are in the measured number 0.00208 m?
A) six
B) two
C) three
D) four
E) five
16) Which of the following examples illustrates a number that is correctly rounded to three significant
figures?
A) 4.05438 grams to 4.054 grams
B) 0.03954 grams to 0.040 grams
C) 103.692 grams to 103.7 grams
D) 109,526 grams to 109 500 grams
E) 20.0332 grams to 20.0 grams
17) A calculator answer of 423.6059 must be rounded off to three significant figures. What answer is
reported?
A) 423
B) 424
C) 420
D) 423.6
E) 423.7
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18) Which of the answers for the following conversions contains the correct number of significant figures?
A) 2.543 m × = 100.1942 in
B) 2 L × = 2.12 qt
C) 24.95 min × = 0.4158 hr
D) 12.0 ft × × = 370 cm
E) 24.0 kg × = 11 lb
19) What is the correct answer for the calculation of a volume (in mL) with measured numbers ?
A) 0.22 mL
B) 0.223 mL
C) 57 mL
D) 14 mL
E) 14.3 mL
20) A researcher added three samples of sodium chloride solution; the volumes were: 0.351 mL, 0.350 mL
and 0.349 mL. The total volume should be reported as
A) 1.05 mL.
B) 1.0 mL.
C) 11 mL.
D) 1.050 mL.
E) 1.0500 mL.
21) When 2610 + 11.7 + 0.22 are added, the answer to the correct number of decimal places is
A) 2621.92.
B) 2621.9.
C) 2621.
D) 2620.
E) 2600.
22) What is the answer, with the correct number of decimal places, for this problem?
4.392 g + 102.40 g + 2.51 g =
A) 109.302 g
B) 109 g
C) 109.3 g
D) 109.30 g
E) 110 g
23) The correct answer for the addition of 7.5 g + 2.26 g + 1.311 g + 2 g is
A) 13.071 g.
B) 13 g.
C) 13.0 g.
D) 10 g.
E) 13.1 g.
24) What is the correct answer for the calculation ?
A) 0.65645
B) 0.656
C) 0.66
D) 1.52
E) 1.5
25) 5.21 cm is the same distance as
A) 0.0521 m.
B) 52.1 dm.
C) 5.21 mm.
D) 0.00521 km.
E) 5210 m.
26) Which of the following measurements are NOT equivalent?
A) 25 mg = 0.025 g
B) 183 L = 0.183 kL
C) 150. ms = 0.150 s
D) 84 cm = 8.4 mm
E) 24 dL = 2.4 L
27) In which of the following is the metric unit paired with its correct abbreviation?
A) microgram / mg
B) milliliter / mL
C) centimeter / km
D) kilogram / cg
E) gram / gm
28) Which of the following is the largest unit?
A) millimeter
B) micrometer
C) meter
D) decimeter
E) kilometer
29) What is the metric relationship between grams and micrograms?
A) 1 g = 100 μg
B) 1 g = 1 000 000 μg
C) 1 g = 0.000 001 μg
D) 1 g = 1000 μg
E) 1 g = 0.001 μg
30) Which of the following is the smallest unit?
A) gram
B) milligram
C) kilogram
D) decigram
E) microgram
31) The cubic centimeter (cm3 or cc) has the same volume as a
A) cubic inch.
B) cubic liter.
C) milliliter.
D) centimeter.
E) cubic decimeter.
32) 9.31 g is the same mass as
A) 931 μg.
B) 931 kg.
C) 93.1 cg.
D) 9310 mg.
E) 0.0931 dg.
33) What is the conversion factor for the relationship between millimeters and centimeters?
A) 1 mm/1 cm
B) 10 mm/1 cm
C) 1 cm/1 mm
D) 100 mm/1 cm
E) 10 cm/1 mm
34) A conversion factor set up correctly to convert 15 inches to centimeters is
A) 100 cm/1 m.
B) 1 inch/2.54 cm.
C) 1 cm/10 mm.
D) 2.54 cm/1 inch.
E) 10 cm/1 inch.
35) Which of the following conversion factors is a measured number?
A) 10 cm/dm
B) 12 in/ft
C) 16 oz/lb
D) 25 miles/gallon
E) 12 eggs/dozen
36) According to the United States Food and Drug Administration, the recommended daily requirement
of protein is 44 g. This is ________ oz of protein.
A) 1248.5
B) 320 000
C) 1.6
D) 0.0605
E) 150 000
37) Which of the following setups would convert centimeters to feet?
A) cm × ×
B) cm × ×
C) cm × ×
D) cm × ×
E) cm × ×
38) The EPA limit for lead in the soil of play areas is 400 ppm. This is the same as
A) 400 mg lead in each gram of soil.
B) 400 g lead in each kilogram of soil.
C) 400 mg lead in each kilogram of soil.
D) 400 µg lead in each kilogram of soil.
E) 400 µg lead in each milligram of soil.
39) How many pounds are in 3.5 kg?
A) 7.7 lb
B) 1.59 lb
C) 0.629 lb
D) 1.6 lb
E) 7.70 lb
40) How many centimeters are there in 57.0 in.?
A) 22 cm
B) 0.0445 cm
C) 145 cm
D) 22.4 cm
E) 140 cm
41) How many kilograms are in 30.4 lb?
A) 13.8 kg
B) 14 kg
C) 67 kg
D) 66.88 kg
E) 66.9 kg
42) How many liters of soft drink are there in 5.25 qt?
A) 4950 L
B) 55.7 L
C) 4.95 L
D) 5.57 L
E) 5.0 L
43) What is 6.5 m converted to inches?
A) 1700 in
B) 1651 in
C) 39 in
D) 260 in
E) 255.9 in
44) 1.00 pint of milk has a volume of how many milliliters? (2 pints = 1 quart)
A) 472 mL
B) 530. mL
C) 1000 mL
D) 1890 mL
E) 106 mL
45) What is the volume of a cube that measures 4.00 cm on each side?
A) 16.0 mL
B) 64.0 L
C) 64.0 mL
D) 64.00 mL
E) 0.640 L
46) Grapes are $1.49 per pound. What is the cost of 1.20 kg of grapes?
A) $3.93
B) $2.73
C) $1.79
D) $0.81
E) $0.56
47) A driver is traveling at 60 km/h. Is the driver speeding if the speed limit is 45 mph?
A) Yes
B) No
48) How many kilograms are in 30.4 lb?
A) 13.8 kg
B) 14 kg
C) 67 kg
D) 66.88 kg
E) 66.9 kg