Unit 1 Study Guide
D)
E)
1.
Which of the following is not a step in the scientific
method?
A) Make an observation.
B) Formulate a hypothesis.
C) Perform an experiment.
D) Change results to agree with your hypothesis.
E) Develop a theory (or model).
16.
How many millimeters are in 2.54  102
centimeters?
A) 2.54  102 mm
B) 2.54  101 mm
C) 2.54  103 mm
D) 2.54 mm
E) 2.54  10–2 mm
2.
A __________ is a summary of observed behavior,
and a __________ is an explanation of behavior.
A) law, measurement
B) theory, scientific method
C) theory, law
D) law, theory
E) hypothesis, theory
4.
Express 30571000 in scientific notation.
A) 3  107
B) 3.0571  107
C) 306  107
D) 30571  103
E) 305710  107
6.
The number 0.00003018 expressed in exponential
notation is
A) 3.018  10–5
B) 3.0  10–5
C) 3.018  105
D) 3.018  10–4
E) 3.018
10.
The number 500,000 expressed in scientific
notation is
A) 5.0  105
B) 5.0  10–5
C) 50  104
D) 500  103
E) 5  105
Express the number 0.00388 in scientific notation.
A) 3.88  10–3
B) 3.88  103
C) 0.388  10–3
D) 388  10–5
E) none of these
14.
How many milliliters are in 0.063 L?
A) 0.63 mL
B) 6.3 mL
C) 6.3  102 mL
18.
Convert: 86.8 L = _____________ mL.
A) 8.68  103 mL
B) 8.68  104 mL
C) 8.68  10–1 mL
D) 8.68  10–2 mL
E) 8.68 mL
20.
Convert: 41.7 cm = ____________ m.
A) 4.17  103 m
B) 4.17  104 m
C) 0.0417 m
D) 0.417 m
E) 4.17 m
22.
is the
The fundamental unit of length in the metric system
A)
B)
C)
D)
E)
8.
The number 0.00298 expressed in exponential
notation is
A) 2.98  103
B) 2.98  10–2
C) 298  103
D) 2.98  102
E) 2.98  10–3
12.
6.3  101 mL
6.3  103 mL
kilometer
meter
centimeter
gram
milliliter
24.
The SI prefix that corresponds to a factor of 10 -3 is
A) kilo
B) deci
C) centi
D) milli
E) none of these
26.
The number of milliliters in 0.0503 liter is
A) 5.03  10–5 mL
B) 50.3 mL
C) 5.03 mL
D) 503 mL
E) 5.03  103 mL
28.
A cubic centimeter (cm3) is equivalent to what
other metric volume unit?
A) milliliter
B) liter
C) deciliter
D) centimeter
E) millimeter
30.
is
The number of cubic centimeters (cm3) in 63.1 mL
A)
B)
Page 1
0.0631 cm3
6.31 cm3
C)
D)
63.1 cm3
none of these
E)
7
44.
How many significant figures are in the
measurement 12.3004 g?
A) 6
B) 5
C) 4
D) 3
E) 2
32.
Using the rules of significant figures, calculate the
following:
14.8903 – 2.14 =
A) 12.7503
B) 12.75
C) 12.750
D) 12
E) 13
46.
In the sum of 54.34 + 45.66, the number of
significant figures is
A) 2
B) 3
C) 4
D) 5
E) 6
34.
Using zero as your reference point, how much liquid
has left the buret? Use the correct number of significant
figures.
48.
The number 243.306 rounded off to five significant
figures is
A) 243.31
B) 243.36
C) 243.30
D) 243.00
E) none of these
A)
B)
C)
D)
E)
50.
What is the result of the following multiplication
expressed in scientific notation to the correct number of
significant figures?
(2.08  105)(7.0  10-5) =
A) 1.4  10-1
B) 1.456  101
C) 1.5  101
D) 1  101
E) 1.46  101
20 mL
22 mL
22.0 mL
38 mL
38.0 mL
52.
How many significant figures are there in the result
of the following calculation?
(4.321/2.8)  (6.9234  105)
A) 1
B) 2
C) 3
D) 4
E) 5
36.
How many significant figures are in the number
1.89  103?
A) 1
B) 2
C) 3
D) 4
E) 5
54.
How many significant figures are in the number
4.00700  1013?
A) 2
B) 4
C) 5
D) 6
E) none of these
38.
How many significant figures are in the number
60.02  105?
A) 2
B) 3
C) 4
D) 5
E) none of these
56.
How many significant figures are in the
measurement 0.2010 g?
A) 1
B) 2
C) 3
D) 4
E) 5
42.
How many significant figures are in the number
34.00500?
A) 3
B) 4
C) 5
D) 6
Page 2
58.
How many significant figures should there be in the
answer when you divide 4.1 by 7.464?
A) 7
B) 4
C) 3
D) 2
E) 1
60.
How many significant figures are in the number
123.00015?
A) 5
B) 6
C) 7
D) 8
E) 9
62.
How many significant figures are in the number
10.050?
A) 1
B) 2
C) 3
D) 4
E) 5
64.
66.
68.
69.
70.
Write the number 0.0005010 in scientific notation.
A) 5.010  104
B) 0.5010  10–3
C) 5.010  10–4
D) 50.10  10–5
E) none of these
Convert 953.3 L to milliliters.
A) 0.9533 mL
B) 9.533 mL
C) 953.3 mL
D) 9.533  103 mL
E) 9.533  105 mL
Convert 7.97 kg to pounds (1 lb = 453.6 g).
A) 17.6 lb
B) 1.76  10–2 lb
C) 3.62  103 lb
D) 3.62 lb
E) 3.62  106 lb
Convert 256713.8 mm to kilometers.
A) 2.567138 km
B) 0.2567138 km
C) 256.7138 km
D) 2567.138 km
E) 2.567138  1011 km
Convert 0.8249 L to centiliters.
A) 0.008249 cL
B) 824.9 cL
C) 82.49 cL
D) 0.08249 cL
E) 8.249 cL
Page 3
72.
Convert 21.0 cm to inches (2.54 cm = 1 in).
A) 53.3 in
B) 5.33 in
C) 8.27 in
D) 82.7 in
E) 0.827 in
74.
Convert 5.47 kg to pounds (1 kg = 2.205 lb).
A) 12.1 lb
B) 2.48 lb
C) 1.21 lb
D) 24.8 lb
E) 0.248 lb
76.
Convert: 0.00600 cm = ____________ mm.
A) 6.00 mm
B) 6.00  10–2 mm
C) 0.600 mm
D) 6.00  10–4 mm
E) 6.00  10–5 mm
78.
Convert: 87.4 cc = ______________ mL.
A) 874 mL
B) 8.74  103 mL
C) 8.74 mL
D) 87.4 mL
E) 0.874 mL
80.
Convert: 640.1 qt = ____________ mL.
A) 6.401  105 mL
B) 678.5 mL
C) 6.785  10–1 mL
D) 1.127  106 mL
E) 6.039  105 mL
82.
Convert: 51.7 mg = _______________ lb.
A) 1.14  102 lb
B) 5.17  10–5 lb
C) 2.34  107 lb
D) 2.28  10–4 lb
E) 1.14  10–4 lb
83.
Convert 89.9F to kelvins.
A) 305.2 K
B) 362.9 K
C) –183.1 K
D) –240.8 K
E) 492.4 K
84.
Convert: 39.6C = _______________ oF.
A) 103.3F
B) 71.3F
C) 39.3F
D) 54.0F
E) –10.0F
85.
Convert: 446.1 K = ________________ oC.
A) 719.1oC
B) 173.1oC
C)
D)
E)
86.
835.0oC
279.8oC
247.8oC
Convert: 15.8oF = _______________ oC.
A) 26.56oC
B) –29.16oC
C) –9.00oC
D) 86.04oC
E) 288.8oC
88.
What Kelvin temperature reading equals 79.9oF?
A) –246.4 K
B) 359.2 K
C) –186.8 K
D) 335.2 K
E) 299.6 K
90.
Convert: –26.8oC = _____________ oF.
A) –80.2oF
B) –16.2oF
C) 17.1oF
D) –46.9oF
E) –48.2oF
92.
Convert: 18.7oF = _____________ oC.
A) 28.17oC
B) –23.94oC
C) 91.26oC
D) –7.39oC
E) 10.39oC
94.
98.
100.
102.
104.
Calculate the mass of a rectangular solid that has a
density of 2.07 g/cm3 and measures 2.50 cm by 1.80 cm by
3.00 cm.
A) 6.52 g
B) 27.9 g
C) 5.17 g
D) 15.1 g
E) 30.9 g
106.
An experiment requires 37.1 g of ethyl alcohol
(density = 0.790 g/mL). What volume, in liters, will be
required?
A) 2.93  10–2 L
B) 2.13  10–5 L
C) 4.70e4 L
D) 4.70  10–2 L
E) 29.3 L
108.
If a 100.-g sample of platinum metal has a volume
of 4.667 mL, what is the density of platinum in g/cm3?
A) 21.4 g/cm3
B) 2.14 g/cm3
C) 0.0467 g/cm3
D) 467 g/cm3
E) none of these
110.
If a 100.-g sample of a metal has a volume of 5.53
mL, what is the density of the metal?
A) 18.1 g/mL
B) 1.81 g/mL
C) 0.0553 g/mL
D) 6 g/mL
E) none of these
Convert: –26.2oC = ______________ oF.
A) –79.2oF
B) 17.4oF
C) –15.2oF
D) –46.6oF
E) –47.2oF
112.
The density of copper is 8.92 g/mL. The mass of a
piece of copper that has a volume of 10.7 mL is
A) 0.954 g
B) 954 g
C) 95.4 g
D) 9.54  10–2 g
E) none of these
The Celsius equivalent of 87.8 K is
A) 360.8oC
B) 87.8oC
C) 187.8oC
D) –185.2oC
E) 190.0oC
114.
Aluminum has a density of 2.70 g/cm3. What is the
mass of a rectangular block of aluminum measuring 11.1 cm
by 22.2 cm by 35.1 cm?
A) 185 kg
B) 3.20  103 kg
C) 0.312 kg
D) 23.4 kg
E) none of these
Convert: 37.3oC = ____________ oF.
A) 35.1oF
B) 52.7oF
C) –11.3oF
D) 67.1oF
E) 99.1oF
115.
An object has a mass of 40.1 g and occupies a
volume of 7.40 mL. The density of this object is
A) 297 g/mL
B) 0.185 g/mL
C) 5.42 g/mL
D) too low to measure
E) 40.1 g/mL
Density is an example of a
A) chemical property
B) physical property
C) qualitative property
D) chemical change
E) physical change
Page 4
116.
What volume would be occupied by a piece of
aluminum (density 2.70 g/mL) weighing 51.1 g?
A) 138 mL
B) 5.28  10–2 mL
C) 18.9 mL
D) 1.89 mL
E) none of these
A)
B)
C)
D)
E)
134.
Baking soda and vinegar are mixed in a balloon. A
gas is produced, and the balloon expands to a volume of 4.54
L. What is the volume of the balloon in cm3?
A) 4.54  103 cm3
B) 45.4 cm3
C) 0.454 cm3
D) 4.54  10–3 cm3
E) 4.54  102 cm3
118.
A piece of an unknown metal weighs 190.8 g and
occupies a volume of 72.2 mL. What is the density of this
metal?
A) 1.38  104 g/mL
B) 2.64 g/mL
C) 0.378 g/mL
D) 26.4 g/mL
E) none of these
136.
An object is 160.0 inches in height. Express this
height in feet.
A) 0.07500 ft
B) 1920. ft
C) 62.99 ft
D) 406.4 ft
E) 13.33 ft
120.
The density of an object that has a mass of 5.95 g
and occupies a volume of 1.20 mL equals
A) 5.95 g/mL
B) 1.20 g/mL
C) 4.96 g/mL
D) 0.20 g/mL
E) 7.14 g/mL
138.
A runner jogs 3.9 miles every morning. How many
kilometers does this represent?
A) 2.4 km
B) 6.3 km
C) 47. km
D) 0.41 km
E) 2.3 km
124.
A chemist needs 13.7 g of bromine for an
experiment. What volume should she use? (Density of
bromine = 3.12 g/cm3.)
A) 0.228 mL
B) 13.7 mL
C) 42.7 mL
D) 10.6 mL
E) 4.39 mL
140.
A car tire has a pressure of 35 psi (pounds per
square inch). What is the pressure of the tire in atm
(atmospheres)? (1 atm = 14.70 psi)
A) 2.4 atm
B) 0.42 atm
C) 50. atm
D) 20. atm
E) 515. atm
126.
One side of a backyard fence measures 349 inches
in length. How many feet does this represent?
A) 29.1 ft
B) 4188. ft
C) 0.0344 ft
D) 137. ft
E) 886. ft
128.
142.
Your friend is 5.0 ft, 6.2 in tall. What is your
friend's height in meters?
A) 0.28 m
B) 1.7 m
C) 28. m
D) 26. m
E) 66. m
How many centimeters are in 10.0 inches?
A) 3.94 cm
B) 0.254 cm
C) 12.5 cm
D) 25.4 cm
E) 120. cm
144.
A walker travels a distance of 1.0 miles. How many
inches did the walker travel?
(1 mi = 5280. ft)
(1 ft = 12 in)
A) 5.3  103 in
B) 4.4  102 in
C) 12. in
D) 12.0 in
E) 6.3  104 in
130.
A dining room table measures 4.9 feet in length.
How many inches does this represent?
A) 0.41 in
B) 2.4 in
C) 17. in
D) 1.9 in
E) 59. in
132.
Perform the following conversion:
__________ km/h
23.0 km/h
0.384 km/h
1.78 km/h
563. km/h
156. km/h
146.
The volume of a helium balloon is 2.6 L. What is
this volume in cm3? (1 L = 1 dm3)
6.40 m/s =
Page 5
A)
B)
C)
D)
E)
26. cm3
2.6  103 cm3
2.6  102 cm3
0.26 cm3
2.6  104 cm3
A) Gold is a yellow metal.
B) Gold is an inert (nonreactive) metal.
C) Gold is a soft metal.
D) Gold is a very dense metal.
E) Gold is a good conductor of heat and
electricity.
148.
The state of matter for an object that has a definite
volume but not a definite shape is
A) solid
B) liquid
C) gaseous
D) elemental
E) mixed
166.
How many of the following are pure compounds?
sodium, sugar, oxygen, air, iron
A) 1
B) 2
C) 3
D) 4
E) 5
151.
Classify each of the following as a physical (P) or a
chemical (C) change.
______________ a. cooking an egg
______________ b. boiling water
______________ c. ironing a shirt
______________ d. burning gasoline
______________ e. decomposing water
______________ f. evaporating alcohol
______________ g. sanding a table top
______________ h. grinding grain
______________ i. fermenting fruit juice
______________ j. dissolving sugar in water
152.
Which of the following involves a chemical
change?
A) boiling water
B) melting ice
C) chopping wood
D) cooking an egg
E) none of these
154.
Which of these is a chemical property?
A) Ice melts at 0°C.
B) Oxygen is a gas.
C) Helium is very nonreactive.
D) Sodium is a soft, shiny metal.
E) Water has a high specific heat.
156.
Which of the following is only a physical change?
A) Sugar dissolves in coffee.
B) Cookies burn in the oven.
C) A banana ripens.
D) Leaves turn colors in the fall.
E) At least two of the above (a-d) exhibit only a
physical change.
158.
168.
Which of the following is an element?
A) air
B) water
C) salt
D) helium
E) sugar
170.
Which of the following is an element?
A) brass
B) salt
C) water
D) earth
E) oxygen
172.
An example of a mixture is
A) hydrogen fluoride
B) purified water
C) gold
D) the air in this room
E) all of these
174.
Which of the following is an incorrect description?
A) A homogeneous mixture.
B) A heterogeneous compound.
C) A solid element.
D) A mixture of solids.
E) A solution of gases.
176.
Classify each of the following as an element (A), a
compound (B), a homogeneous mixture (C), or a
heterogeneous mixture (D).
a. table salt
b. chlorine gas
c. sand in water
d. petroleum
e. caffeine
An example of a chemical change is
A) boiling alcohol
B) grinding coffee beans.
C) digesting a pizza
D) coffee spilled on a shirt
E) an ice cube melting in a drink
178.
by its
A solution can be distinguished from a compound
A)
B)
C)
D)
164.
Which of the following describes a chemical
property of gold?
Page 6
______________
______________
______________
______________
______________
variable composition
liquid state
heterogeneous nature
lack of color
180.
Classify each of the following as an element (E), a
compound (C), or a mixture (M).
a. 14K gold
_____________
b. pure silver
_____________
c. aluminum
_____________
d. distilled water
_____________
e. tap water
_____________
f. brass
_____________
g. tungsten
_____________
h. sodium chloride
_____________
i. air
_____________
182.
D)
E)
192.
4
5
Diamond is a __________ state of matter.
A) solid
B) liquid
C) gaseous
D) unknown
196.
A __________ change involves a change in the
fundamental components of the substance; a given substance
changes into a different substance or substances.
A) chemical
B) physical
C) mixed
D) potential
E) kinetic
Helium is an example of
A) a homogeneous mixture
B) a heterogeneous mixture
C) a compound
D) an element
184.
Which of the following processes require(s)
chemical methods?
A) Separating a homogeneous mixture into pure
substances.
B) Separating a heterogeneous mixture into pure
substances.
C) Distilling a saltwater mixture.
D) Breaking a compound into its constituent
elements.
E) At least two of the above (a-d) require
chemical methods.
200.
How many of the following are pure substances?
(Check all that apply.)
A) water
B) air
C) carbon
D) brass
E) gold
F) ammonia
201.
How many of the following are compounds?
(Check all that apply.)
A) water
B) air
C) carbon
D) brass
E) gold
F) ammonia
186.
How many of the following are compounds?
H2O, N2O4, NaOH, MnO2, HF
A) 1
B) 2
C) 3
Page 7
Answer Key
1.
2.
4.
6.
8.
10.
12.
14.
16.
18.
20.
22.
24.
26.
28.
30.
32.
34.
36.
38.
40.
42.
44.
46.
48.
50.
52.
54.
D
D
B
A
E
E
A
D
C
B
D
B
D
B
A
C
B
C
C
C
23,460
E
A
D
A
C
B
D
56.
58.
60.
62.
64.
66.
68.
70.
72.
74.
76.
78.
80.
82.
84.
86.
88.
90.
92.
94.
96.
98.
100.
102.
104.
106.
108.
110.
112.
114.
D
D
D
E
C
E
A
C
C
A
B
D
E
E
A
C
E
B
D
C
solid
D
E
B
B
D
A
A
C
D
116.
C
118.
B
120.
C
122.
The object
would sink. Density of
the object = 19.2 g/mL. d
(object) > d(Hg).
124.
E
126.
A
128.
D
130.
E
132.
A
134.
A
136.
E
138.
B
140.
A
142.
B
144.
E
146.
B
148.
B
150.
matter
152.
D
154.
C
156.
A
158.
C
160.
chemical;
physical
162.
solid
164.
B
166.
A
Page 2
168.
170.
172.
174.
176.
b. A
c. D
d. C
e. B
178.
180.
b. E
c. E
d. C
e. M
f. M
g. E
h. C
i. M
182.
184.
186.
188.
190.
192.
194.
196.
198.
200.
D
E
D
B
a. C
A
a. M
D
D
E
B
B
A
B
A
A
A, C, E, F