Chapter 01
Chemistry: The Study of Change

Multiple Choice Questions
 
1.  
A tentative explanation for a set of observations that can be tested by further experimentation is referred to as
 
A. a hypothesis.
B. a law.
C. a theory.
D. none of the above.

Bloom's Level: 2. Understand
Difficulty: Easy
Gradable: automatic
Section: 01.03
Subtopic: Scientific Method
Topic: Study of Chemistry
 
2. 
A concise verbal or mathematical statement of a relationship between phenomena that is always the same under the same conditions is referred to as
 
A. a hypothesis.
B. a law.
C. a theory.
D. none of the above.

Bloom's Level: 2. Understand
Difficulty: Easy
Gradable: automatic
Section: 01.03
Subtopic: Scientific Method
Topic: Study of Chemistry

 
3. A unifying principle that explains a body of facts and relations is referred to as 
A. a hypothesis.
B. a law.
C. a theory.
D. none of the above.

Bloom's Level: 2. Understand
Difficulty: Easy
Gradable: automatic
Section: 01.03
Subtopic: Scientific Method
Topic: Study of Chemistry
 
4. Complete the following sentence. A hypothesis is 
A. a tentative explanation for a set of observations that can be tested by further experimentation.
B. 
a statement describing a relationship between phenomena that is always the same under the same conditions.

C. a unifying principle that explains a body of facts and relations.
D. a model used to visualize the invisible.

Bloom's Level: 2. Understand
Difficulty: Easy
Gradable: automatic
Section: 01.03
Subtopic: Scientific Method
Topic: Study of Chemistry

 
5. Complete the following sentence. A scientific law is 
A. a tentative explanation for a set of observations that can be tested by further experimentation.
B. 
a statement describing a relationship between phenomena that is always the same under the same conditions.

C. a unifying principle that explains a body of facts and relations.
D. a model used to visualize the invisible.

Bloom's Level: 2. Understand
Difficulty: Easy
Gradable: automatic
Section: 01.03
Subtopic: Scientific Method
Topic: Study of Chemistry
 
6. Complete the following sentence. A theory is 
A. a tentative explanation for a set of observations that can be tested by further experimentation.
B.  
a statement describing a relationship between phenomena that is always the same under the same conditions.

C. a unifying principle that explains a body of facts and relations.
D. a model used to visualize the invisible.

Bloom's Level: 2. Understand
Difficulty: Easy
Gradable: automatic
Section: 01.03
Subtopic: Scientific Method
Topic: Study of Chemistry

 
7. Choose the response that includes all the items listed below that are pure substances. 
i. orange juice
ii. steam
iii. ocean water
iv. oxygen
v. vegetable soup 
A. i, iii, v
B. ii, iv
C. i, iii, iv
D. iv only
E. all of them are pure

Bloom's Level: 3. Apply
Difficulty: Easy
Gradable: automatic
Section: 01.04
Subtopic: Classification and States of Matter
Topic: Study of Chemistry
 
8. Which of the following is an example of a physical property? 
A. corrosiveness of sulfuric acid
B. toxicity of cyanide
C. flammability of gasoline
D. neutralization of stomach acid with an antacid
E. lead becomes a liquid when heated to 601oC

Bloom's Level: 4. Analyze
Difficulty: Easy
Gradable: automatic
Section: 01.06
Subtopic: Properties of Matter
Topic: Study of Chemistry

 
9. Which one of the following is an example of a physical property? 
A. dynamite explodes
B. meat rots if it is not refrigerated
C. gasoline burns
D. ice floats on top of liquid water
E. a silver platter tarnishes

Bloom's Level: 4. Analyze
Difficulty: Easy
Gradable: automatic
Section: 01.06
Subtopic: Properties of Matter
Topic: Study of Chemistry
 
10. Which one of the following represents a physical change? 
A. water, when heated to 100C, forms steam
B. bleach turns hair yellow
C. sugar, when heated, becomes brown
D. milk turns sour
E. apples, when exposed to air, turn brown

Bloom's Level: 4. Analyze
Difficulty: Easy
Gradable: automatic
Section: 01.06
Subtopic: Properties of Matter
Topic: Study of Chemistry
 
11. All of the following are properties of sodium. Which one is a physical property of sodium? 
A. It's surface turns black when first exposed to air.
B. It is a solid at 25C and changes to a liquid when heated to 98C.
C. When placed in water it sizzles and a gas is formed.
D. When placed in contact with chlorine it forms a compound that melts at 801C.
E. Sodium is never found as the pure metal in nature.

Bloom's Level: 4. Analyze
Difficulty: Easy
Gradable: automatic
Section: 01.06
Subtopic: Properties of Matter
Topic: Study of Chemistry

 
12. All of the following are properties of tin. Which one is a chemical property of tin? 
A. Tin can be hammered into a thin sheet.
B. At –40C a sheet of tin crumbles to a gray powder.
C. Tin melts at 231.9C.
D. When a bar of tin is bent, it emits an audible "cry".
E. Tin erodes when added to hydrochloric acid, and a clear gas forms.

Bloom's Level: 4. Analyze
Difficulty: Medium
Gradable: automatic
Section: 01.06
Subtopic: Properties of Matter
Topic: Study of Chemistry
 
13. Which one of the following represents a chemical change? 
A. boiling water to form steam
B. burning a piece of coal
C. heating lead until it melts
D. mixing iron filings and sand at room temperature
E. breaking glass

Bloom's Level: 4. Analyze
Difficulty: Medium
Gradable: automatic
Section: 01.06
Subtopic: Properties of Matter
Topic: Study of Chemistry
 
14. Which of the following does not represent a chemical change? 
A. a freshly cut apple turns brown
B. milk turns sour on standing at room temperature
C. when cooled to 0C, liquid water becomes ice
D. frying an egg
E. fermentation of sugar to alcohol

Bloom's Level: 4. Analyze
Difficulty: Easy
Gradable: automatic
Section: 01.06
Subtopic: Properties of Matter
Topic: Study of Chemistry

 
15. The SI prefixes kilo and milli represent, respectively: 
A. 10–9 and 10–6
B. 106 and 10–3
C. 103 and 10–3
D. 109 and 10–6
E. 10–9 and 10–1

Bloom's Level: 2. Understand
Difficulty: Easy
Gradable: automatic
Section: 01.07
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry
 
16. The SI prefixes micro and milli represent, respectively: 
A. 106 and 10–6
B. 10–3 and 106
C. 103 and 10–6
D. 10–3 and 109
E. 10–6 and 10–3

Bloom's Level: 2. Understand
Difficulty: Easy
Gradable: automatic
Section: 01.07
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry
 
17. The SI prefixes mega and deci represent, respectively: 
A. 103 and 10–2
B. 106 and 10–1
C. 10–3 and 10–2
D. 10–6 and 102
E. 102 and 10–3

Bloom's Level: 2. Understand
Difficulty: Easy
Gradable: automatic
Section: 01.07
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry

 
18. A centimeter corresponds to: 
A. 10–2 meters.
B. 10–3 meters.
C. 10–6 meters.
D. 10–9 meters.
E. 10–12 meters.

Bloom's Level: 3. Apply
Difficulty: Easy
Gradable: automatic
Section: 01.07
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry
 
19. A microliter corresponds to: 
A. 10–2 liters.
B. 10–3 liters.
C. 10–6 liters.
D. 10–9 liters.
E. 10–12 liters.

Bloom's Level: 3. Apply
Difficulty: Easy
Gradable: automatic
Section: 01.07
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry
 
20. Lead melts at 601.0C. What temperature is this in F? 
A. 302F
B. 365F
C. 1,050F
D. 1,082F
E. 1,114F

Bloom's Level: 3. Apply
Difficulty: Medium
Gradable: automatic
Section: 01.07
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry

 
21. The element gallium melts at 29.8C. What temperature is this in F? 
A. –54.1F
B. –7.8F
C. +13.5F
D. +51.3F
E. +85.6F

Bloom's Level: 3. Apply
Difficulty: Medium
Gradable: automatic
Section: 01.07
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry
 
22. Many home freezers maintain a temperature of 0F. Express this temperature in C. 
A. –32C
B. –18C
C. 0C
D. 18C
E. 57.6C

Bloom's Level: 3. Apply
Difficulty: Medium
Gradable: automatic
Section: 01.07
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry

 
23. 
The highest temperature ever recorded in Phoenix, Arizona, was 122F. Express this temperature in C.
 
A. 50.0C
B. 64.4C
C. 67.8C
D. 162.0C
E. 219.6C

Bloom's Level: 3. Apply
Difficulty: Medium
Gradable: automatic
Section: 01.07
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry
 
24. 
Dry ice (carbon dioxide) changes from a solid to a gas at –78.5C. What is this temperature in F?
 
A. –173F
B. –12.6F
C. –109F
D. –75.6F
E. none of them are within 2F of the right answer

Bloom's Level: 3. Apply
Difficulty: Medium
Gradable: automatic
Section: 01.07
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry

 
25. Liquid nitrogen boils at –195.8C. Express the boiling point of liquid nitrogen in kelvin. 
A. –469.0 K
B. –77.4 K
C. all temperatures are 0 K on the Kelvin scale
D. 77.4 K
E. 469.0 K

Bloom's Level: 3. Apply
Difficulty: Medium
Gradable: automatic
Section: 01.07
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry
 
26. Liquid nitrogen boils at –195.8C. Express the boiling point of liquid nitrogen in F. 
A. –384.4F
B. –352.4F
C. –320.4F
D. –140.8F
E. –76.8F

Bloom's Level: 3. Apply
Difficulty: Medium
Gradable: automatic
Section: 01.07
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry
 
27. How many milliliters is 0.005 L? 
A. 0.5 mL
B. 5 mL
C. 0.50 mL
D. 0.000005 mL
E. 200 mL

Bloom's Level: 3. Apply
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry

 
28. Express 7,500 nm as picometers. 
A. 7.50 pm
B. 75.0 pm
C. 750 pm
D. 7.5  106 pm
E. 7.5  1012 pm

Bloom's Level: 3. Apply
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry
 
29. The diameter of Earth is 12.7 Mm. Express this diameter in centimeters. 
A. 1.27  105 cm
B. 1.27  106 cm
C. 1.27  107 cm
D. 1.27  108 cm
E. 1.27  109 cm

Bloom's Level: 3. Apply
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry

 
30. 
In 1828, the diameter of the U.S. dime was changed to approximately 18 mm. What is this diameter when expressed in nanometers?
 
A. 1.8  109 nm
B. 1.8  107 nm
C. 1.8  101 nm
D. 1.8  10–5 nm
E. 1.8  10–10 nm

Bloom's Level: 3. Apply
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry
 
31. Which of the following represents the largest mass? 
A. 2.0  102 mg
B. 0.0010 kg
C. 1.0  105 ng
D. 2.0  102 cg\
E. 10.0 dg

Bloom's Level: 5. Evaluate
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry

 
32. The density of lead is 11.4 g/cm3 at 25C. Calculate the volume occupied by 25.0 g of lead. 
A. 2.19 cm3
B. 0.456 cm3
C. 285 cm3
D. 1.24 cm3
E. 6.05 cm3

Bloom's Level: 4. Analyze
Difficulty: Easy
Gradable: automatic
Section: 01.07
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry
 
33. Iron has a density of 7.86 g/cm3. The volume occupied by 55.85 g of iron is 
A.  
0.141 cm3.

B. 7.11 cm3.
C. 2.8 cm3.
D. 439 cm3.
E. None of the above.

Bloom's Level: 4. Analyze
Difficulty: Easy
Gradable: automatic
Section: 01.07
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry

 
34. 
Bromine is a red liquid at 25C. Its density is 3.12 g/cm3. What is the volume of 28.1 g of liquid bromine?
 
A. 87.7 cm3
B. 0.111 cm3
C. 9.01 cm3
D. 28.1 cm3
E. None of the above

Bloom's Level: 4. Analyze
Difficulty: Easy
Gradable: automatic
Section: 01.07
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry
 
35. What is the volume of a 2.5 g block of metal if its density is 4.75 g/cm3? 
A. 0.53 cm3
B. 1.9 cm3
C. 2.5 cm3
D. 4.75 cm3
E. 11.9 cm3

Bloom's Level: 4. Analyze
Difficulty: Easy
Gradable: automatic
Section: 01.07
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry

 
36. 
Which of the following objects will sink when dropped into a bucket of water? Given: density of water = 1.00 g/cm3)
 
A. a cube of aluminum (density = 2.702 g/cm3)
B. a diamond (density = 3.51 g/cm3)
C. a chunk of dry ice (density = 1.56 g/cm3)
D. a chunk of sodium (density = 0.91 g/cm3)
E. a sphere of magnesium (density = 1.74 g/cm3)

Bloom's Level: 5. Evaluate
Difficulty: Easy
Gradable: automatic
Section: 01.07
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry
 
37. You just measured a block of wood and obtained the following information: 
mass = 55.120 g
length = 8.5 cm
height = 4.3 cm
width = 3.3 cm
Determine the volume and density of the wood block. 
A. Volume of the wood block = 110 cm3; density of the wood block = 0.36 g/cm3
B. Volume of the wood block = 120 cm3; density of the wood block = 0.36 g/cm3
C. Volume of the wood block = 110 cm3; density of the wood block = 0.46 g/cm3
D. Volume of the wood block = 120 cm3; density of the wood block = 0.46 g/cm3
E. None of the above have both the volume and density reported correctly

Bloom's Level: 4. Analyze
Difficulty: Medium
Gradable: automatic
Section: 01.07
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry

 
38.  
You just measured a metal cylinder and obtained the following information:
 mass = 3.543 g
 diameter = 0.53 cm
 height = 4.4 cm
 Determine the volume (V) and density of the cylinder. (V=r2 h, where r = radius, h = height,  = 3.14)
 
A. Volume of the cylinder = 0.87 cm3; density of the cylinder = 2.7 g/cm3
B. Volume of the cylinder = 0.97 cm3; density of the cylinder = 3.7 g/cm3
C. Volume of the cylinder = 0.87 cm3; density of the cylinder = 3.7 g/cm3
D. Volume of the cylinder = 0.97 cm3; density of the cylinder = 2.7 g/cm3
E. None of the above have both the volume and density correctly reported

Bloom's Level: 4. Analyze
Difficulty: Medium
Gradable: automatic
Section: 01.07
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry
 
39. 
You just measured a sugar cube and obtained the following information:
 mass = 3.48 g
 height = length = width = 1.3 cm
 Determine the volume and density of the cube. Suppose the sugar cube was added to a cup of water. Before it dissolves, will the sugar cube float or sink to the bottom?
 
A. Volume of the sugar cube = 2.4 cm3; density of the sugar cube = 1.6 g/cm3 ; float
B. Volume of the sugar cube = 2.2 cm3; density of the sugar cube = 1.6 g/cm3 ; sink
C. Volume of the sugar cube = 2.2 cm3; density of the sugar cube = 1.4 g/cm3 ; sink
D. 
None of these choices has the volume, density and sink or float decision reported correctly

Bloom's Level: 5. Evaluate
Difficulty: Medium
Gradable: automatic
Section: 01.07
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry

 
40. Express the number 26.7 in scientific notation. 
A. 2.67  10–2
B. 2.67  10–1
C. 2.67  101
D. 2.67  102
E. 26.7 is already written in scientific notation

Bloom's Level: 3. Apply
Difficulty: Easy
Gradable: automatic
Section: 01.08
Subtopic: Scientific Notation and Significant Figures
Topic: Study of Chemistry
 
41. Express the number 0.000053 in scientific notation. 
A. 5.3  10-2
B. 5.3  10-3
C. 5.3  10-4
D. 5.3  10-5
E. 5.3  10-6

Bloom's Level: 3. Apply
Difficulty: Easy
Gradable: automatic
Section: 01.08
Subtopic: Scientific Notation and Significant Figures
Topic: Study of Chemistry
 
42. The number 1.050  109 has how many significant figures? 
A. 2
B. 3
C. 4
D. 9
E. 13

Bloom's Level: 4. Analyze
Difficulty: Easy
Gradable: automatic
Section: 01.08
Subtopic: Scientific Notation and Significant Figures
Topic: Study of Chemistry

 
43. How many significant figures are there in 0.3070 g? 
A. 6
B. 5
C. 4
D. 3
E. 2

Bloom's Level: 4. Analyze
Difficulty: Easy
Gradable: automatic
Section: 01.08
Subtopic: Scientific Notation and Significant Figures
Topic: Study of Chemistry
 
44. 
After carrying out the following operations, how many significant figures are appropriate to how in the result?
 (13.7 + 0.027)  8.221
 
A. 1
B. 2
C. 3
D. 4
E. 5

Bloom's Level: 4. Analyze
Difficulty: Medium
Gradable: automatic
Section: 01.08
Subtopic: Scientific Notation and Significant Figures
Topic: Study of Chemistry

 
45. How many significant figures does the result of the following operation contain? 
8.52010  7.90 
A. 2
B. 3
C. 4
D. 5
E. 6

Bloom's Level: 4. Analyze
Difficulty: Easy
Gradable: automatic
Section: 01.08
Subtopic: Scientific Notation and Significant Figures
Topic: Study of Chemistry
 
46. How many significant figures does the result of the following sum contain? 
8.5201 + 1.93 
A. 1
B. 2
C. 3
D. 4
E. 5

Bloom's Level: 4. Analyze
Difficulty: Easy
Gradable: automatic
Section: 01.08
Subtopic: Scientific Notation and Significant Figures
Topic: Study of Chemistry

 
47. How many significant figures does the result of the following sum contain? 
8.520 + 2.7 
A. 1
B. 2
C. 3
D. 4
E. 5

Bloom's Level: 4. Analyze
Difficulty: Easy
Gradable: automatic
Section: 01.08
Subtopic: Scientific Notation and Significant Figures
Topic: Study of Chemistry
 
48. How many significant figures does the difference 218.7201 – 218.63 contain? 
A. 1
B. 2
C. 3
D. 5
E. 7

Bloom's Level: 4. Analyze
Difficulty: Easy
Gradable: automatic
Section: 01.08
Subtopic: Scientific Notation and Significant Figures
Topic: Study of Chemistry

 
49. Using the arithmetic problem below, determine the correct number of significant figures. 
(1.5  10–4  61.3) + 2.01 = 
A. 2.0192
B. 2.0
C. 2.019
D. 2.02
E. 2.019195

Bloom's Level: 4. Analyze
Difficulty: Medium
Gradable: automatic
Section: 01.08
Subtopic: Scientific Notation and Significant Figures
Topic: Study of Chemistry
 
50. Give the correct number of significant figures to the problem below. 
2.4 x 10-4 + 3.1 x 10-2 = 
A. 
5.5 x 10-6

B. 
5.5 x 10-8

C. 
5.5 x 10-4

D. 3.1 x 10-2
E. 2.4 x 10-4

Bloom's Level: 4. Analyze
Difficulty: Medium
Gradable: automatic
Section: 01.08
Subtopic: Scientific Notation and Significant Figures
Topic: Study of Chemistry

 
51. Give the correct number of significant figures to the problem below. 
5.80 x 10-1 – 3.4 x 10-2 = 
A. 5.5 x 10-1
B. 5.46 x 10-1
C. 2.4 x 10-3
D. 2.4 x 102
E. 5.5 x 10-2

Bloom's Level: 4. Analyze
Difficulty: Medium
Gradable: automatic
Section: 01.08
Subtopic: Scientific Notation and Significant Figures
Topic: Study of Chemistry
 
52. Give the correct number of significant figures to the problem below. 
4.5 x 1014 / 8.3 x 108 = 
A. 5.4 x 1021
B. 5.4 x 1022
C. 5.4 x 106
D. 5.4 x 1014
E. 5.4 x 105

Bloom's Level: 4. Analyze
Difficulty: Easy
Gradable: automatic
Section: 01.08
Subtopic: Scientific Notation and Significant Figures
Topic: Study of Chemistry

 
53. Give the correct number of significant figures to the problem below. 
6.2 x 10-13 x 5.68 x 108 = 
A. 3.5 x 10-13
B. 3.5 x 10-5
C. 3.5 x 10-104
D. 3.5 x 10-4
E. 3.5 x 10-21

Bloom's Level: 4. Analyze
Difficulty: Easy
Gradable: automatic
Section: 01.08
Subtopic: Scientific Notation and Significant Figures
Topic: Study of Chemistry
 
54. Convert 2.340 x 10-4 to decimal format. 
A. 23,400
B. 2,340
C. 0.000234
D. 0.0002340
E. 0.002340

Bloom's Level: 3. Apply
Difficulty: Easy
Gradable: automatic
Section: 01.08
Subtopic: Scientific Notation and Significant Figures
Topic: Study of Chemistry
 
55. Convert 4.5 x 104 to decimal format. 
A. 45,000
B. 4,500
C. 0.00045
D. 0.0045
E. 0.000450

Bloom's Level: 3. Apply
Difficulty: Easy
Gradable: automatic
Section: 01.08
Subtopic: Scientific Notation and Significant Figures
Topic: Study of Chemistry

 
56. Convert 5.00 x 102 milliliters to quarts. (1L = 1.06 qt) 
A. 1.88 qt
B. 0.472 qt
C. 0.528 qt
D. 4.72  105 qt
E. 5.28  105 qt

Bloom's Level: 3. Apply
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry
 
57. 1 US barrel = 4.21 cubic feet. Express this volume in liters. 
A. 3.99  10–5 L
B. 1.99  10–2 L
C. 19.9 L
D. 105 L
E. 119 L

Bloom's Level: 3. Apply
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry
 
58. 1 barrel of oil contains 42.0 gallons. How many liters is this? (1L = 1.06 qt) 
A. 9.9 L
B. 11 L
C. 142 L
D. 158 L
E. 178 L

Bloom's Level: 3. Apply
Difficulty: Easy
Gradable: automatic
Section: 01.09
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry

 
59. The average distance from Earth to the sun is 9.3  107 miles. How many kilometers is this? 
A. 1.5  108 km
B. 1.5  105 km
C. 5.6  107 km
D. 1.7  10–8 km
E. 1.5  1011 km

Bloom's Level: 3. Apply
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry
 
60. What is the area, in square centimeters, of an 8.5 inch by 11 inch sheet of paper? 
A. 94 cm2
B. 240 cm2
C. 420 cm2
D. 6.0  102 cm2
E. 1.2  104 cm2

Bloom's Level: 3. Apply
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry

 
61. 
Suppose a house has a floor area of 2,250 square feet. What is this area in units of square centimeters?
 
A. 2.42 cm2
B. 2.09  106 cm2
C. 5.02  104 cm2
D. 6.86  104 cm2
E. 101 cm2

Bloom's Level: 3. Apply
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry
 
62. What is the volume, in cubic inches, of a brick that is 4.0 in  2.7 in  8.0 in? 
A. 15 in3
B. 51 in3
C. 78 in3
D. 87 in3
E. 150 in3

Bloom's Level: 3. Apply
Difficulty: Easy
Gradable: automatic
Section: 01.09
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry

 
63. What is the volume, in cubic centimeters, of a brick that is 4.0 in  2.7 in  8.0 in? 
A. 5.3 cm3
B. 53 cm3
C. 87 cm3
D. 4.8  102 cm3
E. 1.4  103 cm3

Bloom's Level: 3. Apply
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry
 
64. How many square kilometers are equivalent to 28.5 cm2? 
A. 2.85  10–9 km2
B. 2.85  10–6 km2
C. 285 km2
D. 2.85  10–4 km2
E. none of these

Bloom's Level: 3. Apply
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry

 
65. 
If a car has an EPA mileage rating of 30 miles per gallon, what is this rating in kilometers per liter? (1 L = 1.06 qt)
 
A. 200 km/L
B. 180 km/L
C. 70 km/L
D. 13 km/L
E. 11 km/L

Bloom's Level: 3. Apply
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry
 
66. If the price of gasoline is $3.85 per U.S. gallon, what is the cost per liter? (1 L = 1.06 qt) 
A. $1.02/L
B. $14.60/L
C. $0.96/L
D. $3.85/L
E. $3.63/L

Bloom's Level: 3. Apply
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry

 
67. 
An aluminum beverage can contain 12.0 fluid ounces of liquid. Express this volume in liters. 1 fl oz = 29.6 mL)
 
A. 4.07  10-2 L
B. 0.355 L
C. 0.407 L
D. 2.46 L
E. 3.55  102 L

Bloom's Level: 3. Apply
Difficulty: Easy
Gradable: automatic
Section: 01.09
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry
 
68. 
1.572  108 troy oz of silver were used in the United States in 1980. How many kilograms is this? (1 troy oz = 31.1 g)
 
A. 4.89  106 kg
B. 4.89 kg
C. 5.05  106 kg
D. 4.89 x 1012 kg
E. 5.05  103 kg

Bloom's Level: 3. Apply
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry

 
69. 
A piece of metal with a mass of 611 g is placed into a graduated cylinder that contains 25.1 mL of water, raising the water level to 56.7 mL. What is the density of the metal?
 
A. 2.70 g/cm3
B. 7.13 g/cm3
C. 8.96 g/cm3
D. 10.5 g/cm3
E. 19.3 g/cm3

Bloom's Level: 4. Analyze
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry
 
70. 
A piece of a metal alloy with a mass of 114 g was placed into a graduated cylinder that contained 25.0 mL of water, raising the water level to 42.5 mL. What is the density of the metal?
 
A. 0.154 g/cm3
B. 0.592 g/cm3
C. 2.68 g/cm3
D. 6.51 g/cm3
E. 7.25 g/cm3

Bloom's Level: 4. Analyze
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry

 
71. 
A block of iron has a mass of 826 g. What is the mass of a block of magnesium that has the same volume as the block of iron? The following densities at 25C are provided: agnesium, 1.7 g/cm3 ; graphite, 1.8 g/cm3 ; iron, 7.9 g/cm3.
 
A. 1,400 g
B. 3,800 g
C. 830 g
D. 180 g
E. none of them are within 10 g of the right answer.

Bloom's Level: 4. Analyze
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry
 
72. 
A block of iron has a mass of 483 g. What is the mass of a block of graphite that has the same volume as the block of iron? The following densities at 25C are provided: agnesium, 1.7 g/cm3 ; graphite, 1.8 g/cm3 ; iron, 7.9 g/cm3.
 
A. 110 g
B. 2120 g
C. 6870 g
D. 34 g
E. none of them are within 10 g of the right answer.

Bloom's Level: 4. Analyze
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry

 
73. 
Calculate the mass of the air contained in a room that measures 2.50 m  5.50 m  3.00 m (density of air = 1.29 g/dm3 at 25C).
 
A. 3.13  10–5 g
B. 32.0 kg
C. 53.2 kg
D. 53.2 g
E. None of the above.

Bloom's Level: 4. Analyze
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry
 
74. 
Iridium is essentially tied with osmium for the distinction of being called the "densest element" with a density of 22.5 g/cm3. What would be the mass in pounds of a 1.0 ft  .0 ft  1.0 ft cube of iridium? (1 lb = 453.6 g)
 
A. 1.5 lb
B. 5.2 lb
C. 6.20 lb
D. 1.4  103 lb
E. 6.4  105 lb

Bloom's Level: 4. Analyze
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry

 
75. 
The Hope diamond weighs 44.0 carats. Determine the volume occupied by the diamond, given that its density is 3.5 g/cm3 at 20C, and that 1 carat = 0.200 g.
 
A. 2.5 cm3
B. 0.40 cm3
C. 0.016 cm3
D. 63 cm3
E. 150 cm3

Bloom's Level: 4. Analyze
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry
 
76. 
The density of mercury is 13.6 g/cm3. What is the mass in pounds of 1.0 gallons of mercury? (1 lb = 453.6 g; 1 gal = 3.785 L)
 
A. 0.11 lb
B. 30. Lb
C. 51 lb
D. 83 lb
E. 110 lb

Bloom's Level: 4. Analyze
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry

 
77. 
The density of mercury is 13.6 g/cm3. What volume (in quarts) is occupied by 100.g of Hg? (1 L = 1.06 qt)
 
A. 144 qt
B. 7.35 qt
C. 7.79 qt
D. 7.79  10–3 qt
E. 1.44  10–4 qt

Bloom's Level: 4. Analyze
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry
 
78. 
The "escape velocity" from Earth (the speed required to escape Earth's gravity) is 2.5  104 miles per hour. What is this speed in m/s? (1 mile = 1609 m)
 
A. 4.2  10–3 m/s
B. 6.9 m/s
C. 4.2  102 m/s
D. 1.1  104 m/s
E. 4.0  107 m/s

Bloom's Level: 4. Analyze
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry

 
79. Which of the following speeds is the greatest? (1 mile = 1609 m) 
A. 40 mi/h
B. 2.0  105 mm/min
C. 40 km/h
D. 0.74 km/min
E. 400 m/min

Bloom's Level: 5. Evaluate
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry
 
80. Convert 4.5 m3 to L. 
A. 4.5 x 10-1 L
B. 4.5 x 101 L
C. 4.5 x 10-3 L
D. 4.5x103 L
E. 4.5 x 102L

Bloom's Level: 3. Apply
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry
 
81. Convert 6.4 mm3 to mL. 
A. 6.4 x 10-3 mL
B. 6.4 x 10-1 mL
C. 6.4 x 103 mL
D. 6.4 x 10-2 mL
E. 6.4 mL

Bloom's Level: 3. Apply
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry

 
82. Convert 7.2 cm3 to mm3. 
A. 7.2 x 101 mm3
B. 7.2 x 10-5 mm3
C. 7.2 x 10-3 mm3
D. 7.2 x 102 mm3
E. 7.2 x 103 mm3

Bloom's Level: 3. Apply
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry
 
83. Convert 4.6 km to mm. 
A. 4.6 x 106 mm
B. 4.6 x 103 mm
C. 4.6 x 10-6 mm
D. 4.6 x 10-2 mm
E. 4.6 x 104 mm

Bloom's Level: 3. Apply
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry
 
84. Convert 4.89 mm to µm. 
A. 4.89 x 10-6 µm
B. 4.89 x 10-3 µm
C. 4.89 x 103 µm
D. 4.89 x 106 µm
E. 4.89 x 109 µm

Bloom's Level: 3. Apply
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry

 
85. 
Give the correct number of significant figures and units to the problem below. 56 mm + 4.5 m =
 
A. 61 mm
B. 61 m
C. 61 m2
D. 4.6 m
E. 4.56 m

Bloom's Level: 4. Analyze
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Scientific Measurement and Significant Figures
Topic: Study of Chemistry
 
86. 
Give the correct number of significant figures and units to the problem below. 3.4 x 10-2 mg + 448 µg =
 
A. 0.48 mg
B. 0.482 mg
C. 4.5 mg
D. 4.48 mg
E. 4.5 x 102 mg

Bloom's Level: 4. Analyze
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Scientific Measurement and Significant Figures
Topic: Study of Chemistry

 
87. 
Give the correct number of significant figures and units to the problem below. 58.00 mg – 45.22 µg =
 
A. 57.95 mg
B. 12.78 mg
C. 12.78 µg
D. 57.55 µg
E. 12.78 mg2

Bloom's Level: 4. Analyze
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Scientific Measurement and Significant Figures
Topic: Study of Chemistry
 
88. 
Give the correct number of significant figures and units to the problem below. 4.51 m x 3.2 m =
 
A. 14.4 m
B. 14 m
C. 14 m2
D. 14.4
E. 14.4 m2

Bloom's Level: 4. Analyze
Difficulty: Easy
Gradable: automatic
Section: 01.09
Subtopic: Scientific Measurement and Significant Figures
Topic: Study of Chemistry

 
89. 
Give the correct number of significant figures and units to the problem below. 4.5 m / 8.52 m =
 
A. 0.528 m
B. 0.53 m
C. 0.53 m2
D. 0.53
E. 0.528 m2

Bloom's Level: 4. Analyze
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Scientific Measurement and Significant Figures
Topic: Study of Chemistry
 
90. 
Give the correct number of significant figures and units to the problem below. 8.22 m2 / 9.11 m =
 
A. 0.902 m2
B. 0.902 m3
C. 0.902 m
D. 0.902
E. 0.90 m2

Bloom's Level: 4. Analyze
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Scientific Measurement and Significant Figures
Topic: Study of Chemistry

 
91. 
Give the correct number of significant figures and units to the problem below. 5.46 m3/ 2.01 m2 =
 
A. 2.72 m5
B. 2.72 m3
C. 2.72 m2
D. 2.72 m
E. 2.72 m-1

Bloom's Level: 4. Analyze
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Scientific Measurement and Significant Figures
Topic: Study of Chemistry
 
92. 
Give the correct number of significant figures and units to the problem below. 5.67 m/ 2.04 m2 =
 
A. 2.78 m3
B. 2.78 m2
C. 2.78 m
D. 2.78
E. 2.78 m-1

Bloom's Level: 4. Analyze
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Scientific Measurement and Significant Figures
Topic: Study of Chemistry

 
93. 
Give the correct number of significant figures and units to the problem below. (3.45 m + 2.78 m)/ 565 s =
 
A. 1.10 x 10-2 m2/s
B. 1.10 x 10-2 m/s
C. 1.10 x 10-2 s-1
D. 1.10 x 10-2 s
E. 1.10 x 10-2 m2

Bloom's Level: 4. Analyze
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Scientific Measurement and Significant Figures
Topic: Study of Chemistry
 
94. 
Give the correct number of significant figures and units to the problem below. (5.62 cm – 0.45 cm)/ 342 s =
 
A. 1.51 x 10-2 s-1
B. 1.5 x 10-2 cm2/s
C. 1.51 x 10-2 cm/s
D. 1.5 s-1
E. 1.51 x 10-2 cm2·s

Bloom's Level: 4. Analyze
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Scientific Measurement and Significant Figures
Topic: Study of Chemistry

 
95. 
A long course triathlon entails a 2.0 mile swim, an 85.5 mile bike ride and a 15.0 mile run. What is the total distance in kilometers for the triathlon?
 
A. 160 km
B. 165 km
C. 103 km
D. 164.9 km
E. 102.5 km

Bloom's Level: 4. Analyze
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry
 
96. 
A cyclist averages 18.5 miles per hour. How many minutes will it take for him to complete a 125 kilometer race?
 
A. 252 min
B. 652 min
C. 420 min
D. 1440 min
E. 405 min

Bloom's Level: 4. Analyze
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry

 
97. 
A runner averages 8 minutes and 25 seconds per mile. What is her average velocity in miles per hour?
 
A. 7.27 mi/hr
B. 7.13 mi/hr
C. 8.42 mi/hr
D. 4.36 mi/hr
E. 0.140 mi/hr

Bloom's Level: 4. Analyze
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry
 
98. 
Iron has a density of 7.87 g/cm3. What mass of iron would be required to cover a football playing surface of 120 yds  60 yds to a depth of 1.0 mm? (1 inch = 2.54 cm; 1 lb = 453.6 g)
 
A. 6.4  103 lb
B. 6.4  104 lb
C. 1.0  105 lb
D. 4.7  107 lb
E. 4.7  108 lb

Bloom's Level: 4. Analyze
Difficulty: Difficult
Gradable: automatic
Section: 01.09
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry

 
99. 
Americans combined drive about 4.0109 miles per day and their vehicles get an average of 20 miles per gallon of fuel used. For each 1 kg of gasoline that is burned, about 3.0 kg of CO2 are produced. How many kilograms of CO2 are emitted into the atmosphere each day by cars in the U.S.? One gallon of gas weighs about 3.5 kg.
 
A. 2.1  109 kg
B. 8.4  1011 kg
C. 1.7  108 kg
D. 93 kg
E. none of these

Bloom's Level: 4. Analyze
Difficulty: Difficult
Gradable: automatic
Section: 01.09
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry
 
100. 
How many cubic centimeters of an ore containing only 0.22% gold (by mass) must be processed to obtain $100.00 worth of gold? The density of the ore is 8.0 g/cm3 and the price of gold is $818 per troy ounce. (14.6 troy oz = 1.0 ordinary pound, called an avoirdupois pound; 1 lb = 454 g)
 
A. 0.48 cm3
B. 220 cm3
C. 1.4  103 cm3
D. 1.7  103 cm3
E. 1.8  104 cm3

Bloom's Level: 4. Analyze
Difficulty: Difficult
Gradable: automatic
Section: 01.09
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry

 
101. 
Radio waves travel at the speed of light, which is 3.00  108 m/s. How many minutes does it take for a radio message to reach Earth from Saturn if Saturn is 7.9  108 km from Earth?
 
A. 4.4  10–2 min
B. 1.6  105 min
C. 4.0  1015 min
D. 44 min
E. 2.6 min

Bloom's Level: 4. Analyze
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry
 
102. 
Radio waves travel at the speed of light, which is 3.00  108 m/s. How many kilometers will radio messages travel in exactly one year?
 
A. 9.46  1015 km
B. 7.30  108 km
C. 7.10  1010 km
D. 9.46  1012 km
E. 3.33  10–3 km

Bloom's Level: 4. Analyze
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry

 
103. 
The city of Los Angeles is now approximately 2400 miles south of Alaska. It is moving slowly northward as the San Andreas fault slides along. If Los Angeles is to arrive near Anchorage, Alaska, in 76 million years, at what average rate will it have to move in mm per month?
 
A. 2.0  10–10 mm/mo.
B. 6.6  10–6 mm/mo.
C. 4.2 mm/mo.
D. 9.5 mm/mo.
E. 51 mm/mo.

Bloom's Level: 4. Analyze
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry
 
104. 
The recommended daily allowance (RDA) of calcium is 1.2 g. Calcium carbonate contains 12.0% calcium by mass. How many grams of calcium carbonate are needed to provide the RDA of calcium?
 
A. 0.10 g
B. 0.14 g
C. 1.2 g
D. 10 g
E. 14 g

Bloom's Level: 4. Analyze
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry

 
105. 
A spherical vessel (diameter = 2.00 cm) when empty has a mass of 2.00 g. What is the greatest volume of water that can be placed in the vessel and still have the vessel float at the surface of water? (Given: density of water = 1.00 g/cm3)
 
A. 2.00 mL
B. 31.5 mL
C. 2.19 mL
D. 4.19 mL
E. the vessel will not float even when empty

Bloom's Level: 4. Analyze
Difficulty: Difficult
Gradable: automatic
Section: 01.09
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry
 
106. 
A spherical vessel (diameter = 5.00 cm) when empty has a mass of 12.00 g. What is the greatest volume of water that can be placed in the vessel and still have the vessel float at the surface of benzene? (Given: density of water = 1.00 g/cm3; density of benzene = 0.879 g/cm3)
 
A. 45.5 mL
B. 448 mL
C. 53.4 mL
D. 57.5 mL
E. 65.4 mL

Bloom's Level: 4. Analyze
Difficulty: Difficult
Gradable: automatic
Section: 01.09
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry

 
107. One of the common intravenous fluids, called physiological saline, is a homogeneous mixture of NaCl in water. In this mixture, 0.89% of the mass is contributed by the NaCl. What mass of NaCl is found in 450. mL of physiological saline? (Given: density of physiological saline = 1.005 g/cm3) 
A. 2.0 g
B. 4.0 g
C. 5.1 g
D. 508 g
E. 400 g

Bloom's Level: 4. Analyze
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry
 
108. A special flask used in the determination of densities, called a pycnometer, has a mass of 16.3179 g when empty, and it has a mass of 48.0250 g when filled with water at 20.0C. When this same pycnometer is filled with ethyl alcohol at 20.0C, it is found to have a mass of 41.3934 g. Find the density of ethyl alcohol at 20.0C. (Given: at 20.0C, the density of water is 0.9982 g/mL) 
A. 0.7894 g/mL
B. 0.7923 g/mL
C. 0.7908 g/mL
D. 1.303 g/mL
E. 0.7674 g/mL

Bloom's Level: 4. Analyze
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry

 
109. 
A particular flask has a mass of 17.4916 g when empty. When filled with ordinary water at 20.0C (density = 0.9982 g/mL), the mass of the flask is now 43.9616 g. The density of so-called "heavy water" at 20.0C is 1.1053 g/mL. What will the mass of the flask be when filled with heavy water at 20.0C?
 
A. 29.2573 g
B. 46.8016 g
C. 46.7489 g
D. 29.3100 g
E. 43.9140 g

Bloom's Level: 4. Analyze
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry
 
110. Which of the following is the correct definition of matter? 
A. Matter is anything that has a density greater than 1
B. Matter is anything that occupies space and has mass.
C. Matter must either be a solid or a liquid
D. Matter can only be a pure substance
E. Matter can only exist on Earth

Bloom's Level: 2. Understand
Difficulty: Easy
Gradable: automatic
Section: 01.04
Subtopic: Properties of Matter
Topic: Study of Chemistry

 
111. Which of the following is an accurate definition of a pure substance? 
A. A pure substance must be made of only one element
B. A pure substance must be a solid at room temperature
C. A pure substance will be transparent
D. A pure substance is matter that cannot be broken down into other matter
E. A pure substance is matter that has a definite composition

Bloom's Level: 2. Understand
Difficulty: Easy
Gradable: automatic
Section: 01.04
Subtopic: Properties of Matter
Topic: Study of Chemistry
 
112. Of the following which is NOT a pure substance? 
A. gold
B. sugar
C. water
D. air
E. methane

Bloom's Level: 4. Analyze
Difficulty: Easy
Gradable: automatic
Section: 01.04
Subtopic: Classification and States of Matter
Topic: Study of Chemistry

 
113. Which of the following is true of a mixture? 
A. 
A mixture is a combination of two or more substances in which the substances retain their distinct identities.

B. A mixture is a substance that cannot be separated into simpler substances by chemical means.
C. A mixture is a substance composed of atoms of two or more elements
D. A mixture must be homogeneous
E. A mixture must be heterogeneous

Bloom's Level: 2. Understand
Difficulty: Easy
Gradable: automatic
Section: 01.04
Subtopic: Classification and States of Matter
Topic: Study of Chemistry
 
114. Of the following which is NOT an example of a mixture? 
A. gasoline
B. sea water
C. iron
D. air
E. sand

Bloom's Level: 4. Analyze
Difficulty: Easy
Gradable: automatic
Section: 01.04
Subtopic: Classification and States of Matter
Topic: Study of Chemistry

 
115. Which of the following is true of an element? 
A. An element is a substance composed of atoms of two or more elements
B. 
An element is a substance that cannot be separated into simpler substances by chemical means.

C. 
An element is combination of two or more substances in which the substances retain their distinct identities.

D. An element must be heterogeneous
E. An element must be a solid at room temperature

Bloom's Level: 2. Understand
Difficulty: Easy
Gradable: automatic
Section: 01.04
Subtopic: Classification and States of Matter
Topic: Study of Chemistry
 
116. Which of the following is true of a compound? 
A. 
A compound is a substance composed of atoms of two or more elements chemically united in a fixed ratio.

B. 
A compound is a substance that cannot be separated into simpler substances by chemical means.

C. 
A compound is combination of two or more substances in which the substances retain their distinct identities.

D. A compound must be heterogeneous.
E. A compound must be a solid at room temperature.

Bloom's Level: 2. Understand
Difficulty: Easy
Gradable: automatic
Section: 01.04
Subtopic: Classification and States of Matter
Topic: Study of Chemistry

 

True / False Questions
 
117. 
Select True or False: Ice cream is a pure substance.
 
FALSE

Bloom's Level: 3. Apply
Difficulty: Easy
Gradable: automatic
Section: 01.04
Subtopic: Classification and States of Matter
Topic: Study of Chemistry
 
118. 
Select True or False: Bread is a mixture.
 
TRUE

Bloom's Level: 3. Apply
Difficulty: Easy
Gradable: automatic
Section: 01.04
Subtopic: Classification and States of Matter
Topic: Study of Chemistry
 
119. 
Select True or False: Seven-Up® is a pure substance.
 
FALSE

Bloom's Level: 3. Apply
Difficulty: Easy
Gradable: automatic
Section: 01.04
Subtopic: Classification and States of Matter
Topic: Study of Chemistry

 
120. 
Select True or False: Air is a pure substance.
 
FALSE

Bloom's Level: 3. Apply
Difficulty: Easy
Gradable: automatic
Section: 01.04
Subtopic: Classification and States of Matter
Topic: Study of Chemistry
 
121. 
Select True or False: Table salt is an element.
 
FALSE

Bloom's Level: 3. Apply
Difficulty: Easy
Gradable: automatic
Section: 01.04
Subtopic: Classification and States of Matter
Topic: Study of Chemistry
 
122. 
Select True or False: Iced tea is a mixture.
 
TRUE

Bloom's Level: 3. Apply
Difficulty: Easy
Gradable: automatic
Section: 01.04
Subtopic: Classification and States of Matter
Topic: Study of Chemistry

 
123. 
Select True or False: Oxygen is an element.
 
TRUE

Bloom's Level: 3. Apply
Difficulty: Easy
Gradable: automatic
Section: 01.04
Subtopic: Classification and States of Matter
Topic: Study of Chemistry
 
124. 
Select True or False: Brewed coffee is a pure substance.
 
FALSE

Bloom's Level: 3. Apply
Difficulty: Easy
Gradable: automatic
Section: 01.04
Subtopic: Classification and States of Matter
Topic: Study of Chemistry
 
125. 
Select True or False: Sugar to put in coffee is a compound.
 
TRUE

Bloom's Level: 3. Apply
Difficulty: Easy
Gradable: automatic
Section: 01.04
Subtopic: Classification and States of Matter
Topic: Study of Chemistry

 
126. 
Select True or False: Milk is a pure substance.
 
FALSE

Bloom's Level: 3. Apply
Difficulty: Easy
Gradable: automatic
Section: 01.04
Subtopic: Classification and States of Matter
Topic: Study of Chemistry
 
127. 
Select True or False: A pure yellow crystalline substance, when heated in a vacuum, releases a greenish gas and a red powder. Is the original yellow crystalline substance a compound?
 
TRUE

Bloom's Level: 3. Apply
Difficulty: Medium
Gradable: automatic
Section: 01.04
Subtopic: Classification and States of Matter
Topic: Study of Chemistry

Multiple Choice Questions

 
128. 
What are the three states of matter?
 
A. Compound, element, mixture
B. Compound, solid, liquid
C. Solid, liquid, element
D. Solid, liquid, gas
E. Solid, liquid, compound

Bloom's Level: 3. Apply
Difficulty: Easy
Gradable: automatic
Section: 01.05
Subtopic: Classification and States of Matter
Topic: Study of Chemistry
 
129. What are the common names for the solid, liquid, and gaseous states of water? 
A. Ice, water, gas
B. Ice, water, steam
C. Cubes, liquid, vapor
D. Ice, water, plasma
E. Molecules, atoms, ions

Bloom's Level: 3. Apply
Difficulty: Easy
Gradable: automatic
Section: 01.05
Subtopic: Classification and States of Matter
Topic: Study of Chemistry

 
130. Of the following which is NOT a physical property? 
A. Melting point
B. Boiling point
C. Density
D. Color
E. Ability to react with oxygen

Bloom's Level: 3. Apply
Difficulty: Easy
Gradable: automatic
Section: 01.06
Subtopic: Properties of Matter
Topic: Study of Chemistry

True / False Questions
 
131. 
Select True or False: When bacteria changes milk to yogurt it is a chemical change.
 
TRUE

Bloom's Level: 3. Apply
Difficulty: Easy
Gradable: automatic
Section: 01.06
Subtopic: Classification and States of Matter
Topic: Study of Chemistry
 
132. 
Select True or False: Hydrogen gas and nitrogen gas are combining to form ammonia gas is a chemical change.
 
TRUE

Bloom's Level: 3. Apply
Difficulty: Easy
Gradable: automatic
Section: 01.06
Subtopic: Classification and States of Matter
Topic: Study of Chemistry

 
133. 
Select True or False: The formation of snowflakes is a physical change.
 
TRUE

Bloom's Level: 3. Apply
Difficulty: Easy
Gradable: automatic
Section: 01.06
Subtopic: Classification and States of Matter
Topic: Study of Chemistry
 
134. 
Select True or False: The corrosion of a metal is a physical change.
 
FALSE

Bloom's Level: 3. Apply
Difficulty: Easy
Gradable: automatic
Section: 01.06
Subtopic: Classification and States of Matter
Topic: Study of Chemistry
 
135. 
Select True or False: The ripening of fruit is a physical change.
 
FALSE

Bloom's Level: 3. Apply
Difficulty: Easy
Gradable: automatic
Section: 01.06
Subtopic: Classification and States of Matter
Topic: Study of Chemistry

 
136. 
Select True or False: The fashioning of a piece of wood into a table leg is a physical change.
 
TRUE

Bloom's Level: 3. Apply
Difficulty: Easy
Gradable: automatic
Section: 01.06
Subtopic: Classification and States of Matter
Topic: Study of Chemistry
 
137. 
Select True or False: Fermenting of grapes is physical change.
 
FALSE

Bloom's Level: 3. Apply
Difficulty: Easy
Gradable: automatic
Section: 01.06
Subtopic: Classification and States of Matter
Topic: Study of Chemistry
 
138. 
Select True or False: Antifreeze boiling out of a radiator is a physical change.
 
TRUE

Bloom's Level: 3. Apply
Difficulty: Easy
Gradable: automatic
Section: 01.06
Subtopic: Classification and States of Matter
Topic: Study of Chemistry

 
139. 
Select True or False: Food spoiling is a chemical change.
 
TRUE

Bloom's Level: 3. Apply
Difficulty: Easy
Gradable: automatic
Section: 01.06
Subtopic: Classification and States of Matter
Topic: Study of Chemistry
 
140. 
Select True or False: Alcohol evaporating is a physical change.
 
TRUE

Bloom's Level: 3. Apply
Difficulty: Easy
Gradable: automatic
Section: 01.06
Subtopic: Classification and States of Matter
Topic: Study of Chemistry
 
141. 
Select True or False: Water boiling at 100oC is a physical property.
 
TRUE

Bloom's Level: 3. Apply
Difficulty: Easy
Gradable: automatic
Section: 01.06
Subtopic: Classification and States of Matter
Topic: Study of Chemistry

 
142. 
Select True or False: Newspaper burning is an example of a physical property.
 
FALSE

Bloom's Level: 3. Apply
Difficulty: Easy
Gradable: automatic
Section: 01.06
Subtopic: Classification and States of Matter
Topic: Study of Chemistry

Multiple Choice Questions
 
143. 
In the process of fixing breakfast you:
 1. break open the egg
 2. fry it
 3. cut the fried egg into pieces
 4. cut toast in half
 Which one of these is a chemical process?
 
A. #1
B. #2
C. #3
D. #4
E. None of the above

Bloom's Level: 3. Apply
Difficulty: Medium
Gradable: automatic
Section: 01.06
Subtopic: Classification and States of Matter
Topic: Study of Chemistry

 

True / False Questions

144. 
Select True or False: Density is an intensive property.
 
TRUE

Bloom's Level: 3. Apply
Difficulty: Easy
Gradable: automatic
Section: 01.06
Subtopic: Classification and States of Matter
Topic: Study of Chemistry
 
145. 
Select True or False: Length is an intensive property.
 
FALSE

Bloom's Level: 3. Apply
Difficulty: Easy
Gradable: automatic
Section: 01.06
Subtopic: Classification and States of Matter
Topic: Study of Chemistry
 
146. 
Select True or False: Cost per unit is an intensive property.
 
TRUE

Bloom's Level: 3. Apply
Difficulty: Easy
Gradable: automatic
Section: 01.06
Subtopic: Classification and States of Matter
Topic: Study of Chemistry

 
147. 
Select True or False: Total cost is an extensive property.
 
TRUE

Bloom's Level: 3. Apply
Difficulty: Easy
Gradable: automatic
Section: 01.06
Subtopic: Classification and States of Matter
Topic: Study of Chemistry
 
148. 
Select True or False: Melting point is an extensive property.
 
FALSE

Bloom's Level: 3. Apply
Difficulty: Easy
Gradable: automatic
Section: 01.06
Subtopic: Classification and States of Matter
Topic: Study of Chemistry
 
149. 
Select True or False: Boiling point is an intensive property.
 
TRUE

Bloom's Level: 3. Apply
Difficulty: Easy
Gradable: automatic
Section: 01.06
Subtopic: Classification and States of Matter
Topic: Study of Chemistry

 

150. 
Select True or False: Mass is an intensive property.
 
FALSE

Bloom's Level: 3. Apply
Difficulty: Easy
Gradable: automatic
Section: 01.06
Subtopic: Classification and States of Matter
Topic: Study of Chemistry
 
151. 
Select True or False: 0 K is the lowest temperature that can be attained theoretically.
 
TRUE

Bloom's Level: 2. Understand
Difficulty: Easy
Gradable: automatic
Section: 01.07
Subtopic: Properties of Matter
Topic: Study of Chemistry
 
152. 
Select True or False: The lowest temperature that can be attained in units of C (use 3 significant figures) is 273oC.
 
FALSE

Bloom's Level: 3. Apply
Difficulty: Easy
Gradable: automatic
Section: 01.07
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry

 

Multiple Choice Questions

153. 
An organic liquid has a density of 1.2 g/cm3. What is the mass of a 35.0 cm3 sample of this liquid?
 
A. 35 g
B. 29 g
C. 42 g
D. 36
E. None of the above

Bloom's Level: 3. Apply
Difficulty: Easy
Gradable: automatic
Section: 01.07
Subtopic: Dimensional Analysis
Topic: Study of Chemistry
 
154. What is the density of copper if 11.8 cm3 of copper has a mass of 105.2 g? 
A. 7.92 g/cm3
B. 8.92 g/cm3
C. 9.92 g/cm3
D. 10.92 g/cm3
E. None of the above

Bloom's Level: 3. Apply
Difficulty: Easy
Gradable: automatic
Section: 01.07
Subtopic: Dimensional Analysis
Topic: Study of Chemistry

 
155. What is the density of a salt solution if 75.0 mL of the solution has a mass of 32.0 g? 
A. 0.127 g/mL
B. 0.227 g/mL
C. 0.327 g/mL
D. 0.427 g/mL
E. None of the above

Bloom's Level: 3. Apply
Difficulty: Easy
Gradable: automatic
Section: 01.07
Subtopic: Dimensional Analysis
Topic: Study of Chemistry

True / False Questions
 
156. 
Select True or False: The weight of a body varies according to the force of gravity exerted on the body.
 
TRUE

Bloom's Level: 2. Understand
Difficulty: Medium
Gradable: automatic
Section: 01.07
Subtopic: Classification and States of Matter
Topic: Study of Chemistry
 
157. 
Select True or False: The mass of a body varies according to the force of gravity exerted on the body.
 
FALSE

Bloom's Level: 2. Understand
Difficulty: Medium
Gradable: automatic
Section: 01.07
Subtopic: Classification and States of Matter
Topic: Study of Chemistry

 
158. 
Select True or False: The SI base unit of time is the hour.
 
FALSE

Bloom's Level: 2. Understand
Difficulty: Easy
Gradable: automatic
Section: 01.07
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry
 
159. 
Select True or False: 20C is colder than 40F.
 
FALSE

Bloom's Level: 2. Understand
Difficulty: Medium
Gradable: automatic
Section: 01.07
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry
 
160. 
Select True or False: 16 megagrams (Mg) is equal to 1.6  107 g.
 
TRUE

Bloom's Level: 2. Understand
Difficulty: Easy
Gradable: automatic
Section: 01.07
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry

 
161. 
Select True or False: The number 30.40 contains three significant figures.
 
FALSE

Bloom's Level: 3. Apply
Difficulty: Easy
Gradable: automatic
Section: 01.08
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry
 
162. 
Select True or False: The number 0.07010 contains four significant figures.
 
TRUE

Bloom's Level: 3. Apply
Difficulty: Easy
Gradable: automatic
Section: 01.08
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry
 
163. 
Select True or False: The number 9.64000  105 contains six significant figures.
 
TRUE

Bloom's Level: 3. Apply
Difficulty: Easy
Gradable: automatic
Section: 01.08
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry

 

Multiple Choice Questions

164. An automobile engine has a piston displacement of 1,600 cm3. Express this volume in liters. 
A. 0.16 L
B. 16 L
C. 1.6 L
D. 160 L
E. None of the above

Bloom's Level: 3. Apply
Difficulty: Easy
Gradable: automatic
Section: 01.09
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry
 
165. 
An automobile engine has a piston displacement of 1,600 cm3. Express this volume in cubic inches. (1 in = 2.54 cm)
 
A. .0998 in3
B. 9.8 in3
C. 98 in3
D. 9980 in3
E. None of the above

Bloom's Level: 3. Apply
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry

 
166. 
An investor paid market price for a chunk of gold that he was told was pure. The gold bar had a mass of 440 g, but was slightly irregular so an exact volume could not be calculated. The investor filled a large graduated cylinder with water, immersed the chunk of gold, and observed an increase in the apparent volume of material in the graduated cylinder of 25.0 mL. Pure gold has a density of 19.3 g/cm3. What is the density of the investor's chunk of gold?
 
A. 17.9 g/cm3
B. 17.6 g/cm3
C. 17.4 g/cm3
D. 17.1 g/cm3
E. None of the above

Bloom's Level: 4. Analyze
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Dimensional Analysis
Topic: Study of Chemistry
 
167. 
An American engineer who had been transferred to Europe was asked to build bridge pilings exactly as he had in the United States. Each piling required 20.0 cubic yards of concrete in the United States. How many cubic meters of concrete are required for each piling? Given: 1yd = 0.914 m.
 
A. 15.3 m3
B. 16.3 m3
C. 17.3 m3
D. 18.3 m3
E. None of the above

Bloom's Level: 4. Analyze
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Dimensional Analysis
Topic: Study of Chemistry

 
168. 
A soft drink costs 75 cents for a 12-oz can. A two-liter bottle costs $1.25. How much more expensive is the can compared to the two-liter bottle? (1.0 L = 1.057 qt, 1 qt = 32 oz)
 
A. The can is over two times more expensive by volume.
B. The can is over three times more expensive by volume.
C. The can is over four times more expensive by volume.
D. The can is over five times more expensive by volume.
E. None of the above

Bloom's Level: 4. Analyze
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Dimensional Analysis
Topic: Study of Chemistry
 
169. 
A person weighs 150.0 lb, and the correct dosage of a drug is given as 1.50 mg per kilogram of body weight. How many milligrams of the drug should be given? (2.20 lb = 1 kg)
 
A. 115 mg
B. 112 mg
C. 108 mg
D. 102 mg
E. None of the above

Bloom's Level: 4. Analyze
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Dimensional Analysis
Topic: Study of Chemistry

 
170. 
An archeologist finds a huge monolith in the desert. In order to estimate the weight of this object; he estimates the dimensions of the monolith and removes some chips from the rock with
 his hammer, collecting the following data:
 dimensions of the monolith = 1.5 m  5.2 m  13 m
 mass of rock chips = 41.73 g
 volume of rock chips = 15.2 cm3
 Determine the mass of the monolith in pounds, assuming it is of uniform composition. (1 lb = 453.6 g)
 
A. 5.9  105 lb
B. 6.1  105 lb
C. 6.3  105 lb
D. 6.5  105 lb
E. None of the above

Bloom's Level: 4. Analyze
Difficulty: Difficult
Gradable: automatic
Section: 01.09
Subtopic: Dimensional Analysis
Topic: Study of Chemistry
 
171. 
An excavator is preparing to dig a basement for a new house. Part of his contract reads that he must dispose of all the dirt he removes while digging the basement in an EPA approved landfill. He will dig a hole that is 40 feet wide by 50 feet long and 7.5 feet deep. He first uses his shovel and scoops up 1.00 kg of dirt, and then determines that the dirt as a volume of 600 cm3. The excavator knows that his dump truck can only carry 8,000 kg of dirt. How many dump-truck loads will it take to haul the dirt away?
 
A. 89 dump-truck loads
B. 95 dump-truck loads
C. 99 dump-truck loads
D. 101dump-truck loads
E. None of the above

Bloom's Level: 4. Analyze
Difficulty: Difficult
Gradable: automatic
Section: 01.09
Subtopic: Dimensional Analysis
Topic: Study of Chemistry

 
172. 
What will be the cost of gasoline for a 3,700-mile trip in a car that gets 23 miles per gallon if the average price of gas is $3.90 per gallon?
 
A. $690
B. $670
C. $650
D. $630
E. None of the above

Bloom's Level: 4. Analyze
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Dimensional Analysis
Topic: Study of Chemistry
 
173. 
What will be the cost of gasoline for a 4,700-mile automobile trip if the car gets 41 miles per gallon, and the average price of gas is $3.79 per gallon?
 
A. $410
B. $420
C. $430
D. $440
E. None of the above

Bloom's Level: 4. Analyze
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Dimensional Analysis
Topic: Study of Chemistry

 
174. The density of lead is 11.4 g/cm3. Express this density in pounds per cubic foot. 
A. 711 lbs/ft3
B. 721 lbs/ft3
C. 731 lbs/ft3
D. 741 lbs/ft3
E. None of the above

Bloom's Level: 4. Analyze
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Dimensional Analysis
Topic: Study of Chemistry
 
175. What is the mass of 1.00 dm3 of mercury? The density of mercury is 13.6 g/cm3. 
A. 1.26  104 g
B. 1.36  104 g
C. 1.46  104 g
D. 1.56  104 g
E. None of the above

Bloom's Level: 4. Analyze
Difficulty: Medium
Gradable: automatic
Section: 01.09
Subtopic: Dimensional Analysis
Topic: Study of Chemistry