15) An object measuring 0.76 decimeters will have a length of ________ centimeters.
A) 7.6
B) 0.076
C) 0.0076
D) 1100
E) 0.00076
16) What decimal power does the abbreviation nano represent?
A) 1 × 106
B) 1 × 109
C) 1 × 10-1
D) 1 × 10–9
E) 1 × 10–12
17) A temperature of 290. K is the same as ________ °F.
A) 63
B) 81
C) 260
D) 711
E) 351
18) A temperature of 10.00 °C is the same as ________ °F.
A) 50.00
B) 32.18
C) -12.22
D) 283.15
E) -263.15
19) A temperature of 100. °F is the same as ________ °C.
A) 38
B) 212
C) 700.
D) 373
E) -173
20) A temperature of 55.0 °F is the same as ________ °C.
A) 12.8
B) 131.0
C) 32.0
D) 328.2
E) -218.2
21) Of the following, ________ is the smallest mass.
A) 55 kg
B) 55 mg
C) 55 pg
D) 55 fg
E) 55 ng
22) Of the following, ________ is the largest mass.
A) 284.7 Mg
B) 284.7 dg
C) 284.7 g
D) 284.7 Tg
E) 284.7 Gg
23) What is the volume (in cm3) of a 36.7 g piece of metal with a density of 6.95 g/cm3?
A) 5.28
B) 19.5
C) .425
D) 6.65
E) none of the above
24) The density of silver is 10.5 g/cm3. A piece of silver with a mass of 61.3 g would occupy a volume of
________ cm3.
A) 0.171
B) 644
C) 10.5
D) 0.00155
E) 5.84
25) A cube of an unknown metal measures 0.250 cm on one side. The mass of the cube is 0.095 g. Which of
the following is most likely the unknown metal?
A) zirconium
B) rhodium
C) vanadium
D) copper
E) niobium
26) Gold has a density of 0.01932 kg/cm3. What volume (in cm3) would be occupied by a 22.2 g sample of
gold?
A) 0.429
B) 0.870
C) 0.000429
D) 16.81
E) 1.15
27) Gold has a density of 0.01932 kg/cm3. What is the mass (in kg) of a 92.5 cm3 sample of gold?
A) 1.79
B) 0.560
C) 92.5
D) 0.000209
E) 4790
28) The density of silver is 10.5 g/ cm3. A piece of silver that occupies a volume of 9.60 cm3 would have a
mass of ________ g.
A) 101
B) .445
C) 2.25
D) 112
E) 23.6
29) The correct answer (reported to the proper number of significant figures) to the following is ________.
7.3 × 4.68 = ________
36
30) The correct answer (reported to the proper number of significant figures) to the following is ________.
(1501-1496) × (9.18 × 3.68) = ________
31) 2.98 lbs = ________ grams.
32) Which of the following has the same number of significant figures as the number 0.0050?
A) 0.9
B) 4.0
C) 1.00
D) 601
E) 99.000
33) How many Significant Figures does the number 0.005000 have?
A) 4
B) 5
C) 1
D) 2
E) 3
34) The number 0.0101 has ________ significant figures.
A) 2
B) 3
C) 5
D) 4
E) 6
35) In which one of the following numbers are none of the zeros significant?
A) 10.0
B) 103
C) 161.00
D) 0.00050
E) 0.009
36) Round the number 0.00637 to two significant figures.
A) 0.0064
B) 0.006
C) 0.00637
D) 0.0
E) 0.0063700
37) How many significant figures are in the number 4001?
A) 3
B) 4
C) 5
D) 6
E) 7
38) How many significant figures are in the measurement 5000 g?
A) 4
B) 2
C) 3
D) 1
E) 5
39) The number with the most significant zeros is ________.
A) 0.08
B) 0.00090
C) 90.300
D) 0.008001
E) 591
40) The width, length, and height of a large, custom-made shipping crate are 1.12 m, 1.25 m, and 0.83 m,
respectively. The volume of the box using the correct number of significant figures is ________ m3.
A) 1.16200
B) 1.2
C) 1.16
D) 1.162
E) 1.1620
41) The estimated costs for remodelling the interior of an apartment are: three 1-gallon cans of paint at
$15.44 each, two paint brushes at $12.22 each, and $145 for a helper. The total estimated cost with the
appropriate significant figures is $________.
A) 215.76
B) 2.2 × 102
C) 216
D) 2 × 102
E) 215.8
42) Round the following number to four significant figures and express the result in standard exponential
notation: 0.00222755
A) 0.2228 × 10-2
B) 0.002228
C) 2.228 × 103
D) 2.228 × 10-3
E) 22.28 × 102
39
43) The quantity ________ m is the same as 4 km.
A) 4000
B) 400
C) 0.004
D) 0.04
E) 40
44) How many liters of wine can be held in a wine barrel whose capacity is 30.0 gal?
A) 1.26 × 10-4
B) 0.126
C) 114
D) 7.93 × 103
E) 7.93
45) 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 134-lb person.
A) 20
B) 1,773
C) 1.8
D) 365
E) 3.6 × 105
46) 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 9.0 ft × 11.0 ft and has a 10.0 ft ceiling?
A) 2.99
B) 0.124
C) 3.34 × 104
D) 0.0644
E) 33.4
47) Which of the following liquids has the greatest density?
A) 13 cm3 with a mass of 23 g
B) 3.5 cm3 with a mass of 10 g
C) 0.022 cm3 with a mass of 0.10 g
D) 54 cm3 with a mass of 45 g
E) 210 cm3 with a mass of 12 g
48) How many liters of air are in a room that measures 11.0 ft × 12.0 ft and has a 10.0 ft ceiling?
1 in. = 2.54 cm (exactly); 1 L = 103 cm3
A) 3.74 × 104
B) 139
C) 40.2
D) 4.02 × 107
E) 1.01 × 106
1.4 Short Answer Questions
1) Gases do not have a fixed ________ as they are able to be ________.
2) The symbol for the element phosphorus is ________.
3) Sn is the symbol for the element ________.
4) Si is the symbol for the element ________.
5) Cu is the symbol for the element ________.
6) Mass and volume are often referred to as ________ properties of substances.
7) 1 milligram = ________ micrograms
8) 1.035 × 10-4 L = ________ mL
1.5 True/False Questions
1) Water is considered to be a diatomic molecule because it is composed of two different atoms.
2) A scientific theory is a concise statement or an equation that summarizes a broad variety of
observations.
3) 3.2 cm3 = 0.0032 L
4) Temperature is a physical property that determines the direction of heat flow.
5) There are 6 significant figures in the number 0.003702.