General Chemistry, 11th Edition Test Bank

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General Chemistry, 11th Edition Test Bank provides a complete breakdown of important topics, helping you study efficiently and effectively.

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Chapter 01 - Chemistry and Measurement
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1. What is a scientific theory?
a. It is a collection of experimental data.
b. It is an assertion of scientific fact.
c. It is a guess or conjecture about natural phenomena.
d. It is a fundamental relationship of nature.
e. It is an explanation of natural phenomena that has undergone significant testing.
ANSWER: e
POINTS: 1
DIFFICULTY: easy
REFERENCES: 1.2
HAS VARIABLES: False
LEARNING OBJECTIVES: GENE.EBBI.13.1 - Understand how the scientific method is an approach to
performing science.
TOPICS: general concepts
scientific method
OTHER: general chemistry
2. An untested explanation of a series of experimental observations is called _____.
a. a hypothesis
b. a theory
c. a law
d. an experiment
e. the scientific method
ANSWER: a
POINTS: 1
DIFFICULTY: easy
REFERENCES: 1.2
HAS VARIABLES: False
LEARNING OBJECTIVES: GENE.EBBI.13.1 - Understand how the scientific method is an approach to
performing science.
TOPICS: general concepts
scientific method
3. Which of the following statements concerning experiment and explanation is/are true?
1. A law is always given in the form of a mathematical expression.
2. Once a hypothesis passes one or two tests it is considered a theory.
3. Observation is a key component of the scientific method.
a. 1 only
b. 2 only
c. 3 only
d. 1 and 2
e. 1, 2, and 3

Chapter 01 - Chemistry and Measurement
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ANSWER: c
POINTS: 1
DIFFICULTY: easy
REFERENCES: 1.2
HAS VARIABLES: False
LEARNING OBJECTIVES: GENE.EBBI.13.1 - Understand how the scientific method is an approach to
performing science.
TOPICS: general concepts
scientific method
4. A saline solution similar to that used for intravenous drips is made by dissolving 0.45 g sodium chloride in
50.00 g water. Which of the following statements concerning the saline solution and the law of conservation of
mass is/are correct?
1. The mass of the saline solution is greater than the mass of water.
2. The mass of the saline solution is equal to the combined mass of sodium
chloride and water.
3. The mass of the saline solution is greater than the mass of the sodium chloride.
a. 1 only
b. 2 only
c. 3 only
d. 1 and 2
e. 1, 2, and 3
ANSWER: d
POINTS: 1
DIFFICULTY: easy
REFERENCES: 1.3
HAS VARIABLES: False
LEARNING OBJECTIVES: GENE.EBBI.13.2 - Apply the law of the conservation of mass.
TOPICS: general concepts
matter
5. A 54.0-g sample of sodium is completely burned in air to form sodium oxide. The mass of sodium oxide
must be
a. less than 54.0 g.
b. greater than 54.0 g.
c. equal to 54.0 g.
d. all of the above.
e. none of the above.
ANSWER: b
POINTS: 1
DIFFICULTY: easy
REFERENCES: 1.3

Chapter 01 - Chemistry and Measurement
Copyright Cengage Learning. Powered by Cognero. Page 3
HAS VARIABLES: True
LEARNING OBJECTIVES: GENE.EBBI.13.3 - Apply the law of the conservation of mass. (Example 1.1)
TOPICS: general concepts
matter
6. A sample of magnesium is burned in oxygen to form magnesium oxide. What mass of oxygen is consumed if
74.62 g magnesium oxide is formed from 45.00 g magnesium?
a. 29.62 g
b. 119.62 g
c. 3358.06 g
d. 0.60 g
e. none of the above.
ANSWER: a
POINTS: 1
DIFFICULTY: easy
REFERENCES: 1.3
HAS VARIABLES: True
LEARNING OBJECTIVES: GENE.EBBI.13.2 - Apply the law of the conservation of mass.
TOPICS: general concepts
matter
7. In a certain chemical reaction, 9.11 g of compound A is added to 8.82 g of compound B. Once the reaction is
complete, 1.38 g of compound A and 1.61 g of compound B remain. What mass of products was produced?
a. 20.92 g
b. 7.21 g
c. 14.94 g
d. 7.73 g
e. 2.99 g
ANSWER: c
POINTS: 1
DIFFICULTY: easy
REFERENCES: 1.3
HAS VARIABLES: True
LEARNING OBJECTIVES: GENE.EBBI.13.3 - Apply the law of the conservation of mass. (Example 1.1)
TOPICS: general concepts
matter
KEYWORDS: Law of Conservation of Mass
OTHER: general chemistry
8. A 7.45 g sample of calcium carbonate completely decomposes into calcium oxide (lime) and carbon dioxide
gas when heated. If 4.17 g calcium oxide is produced, what mass of carbon dioxide must have been formed?
a. 3.28 g

Chapter 01 - Chemistry and Measurement
Copyright Cengage Learning. Powered by Cognero. Page 4
b. 11.62 g
c. 31.10 g
d. 0.56 g
e. 2.48 g
ANSWER: a
POINTS: 1
DIFFICULTY: easy
REFERENCES: 1.3
HAS VARIABLES: True
LEARNING OBJECTIVES: GENE.EBBI.13.2 - Apply the law of the conservation of mass.
TOPICS: general concepts
matter
9. A sample of cesium carbonate, weighing 3.80 g, requires 1.90 g of hydrogen bromide gas to completely
decompose to water, cesium bromide, and carbon dioxide gas. The total mass of water and cesium bromide
formed is 5.20 g and no hydrogen bromide or cesium carbonate remains. According to the law of conservation
of mass, what mass of carbon dioxide must have been formed?
a. 0.50 g
b. 1.40 g
c. 5.49 g
d. 10.90 g
e. 1.90 g
ANSWER: a
POINTS: 1
DIFFICULTY: moderate
REFERENCES: 1.3
HAS VARIABLES: True
LEARNING OBJECTIVES: GENE.EBBI.13.2 - Apply the law of the conservation of mass.
TOPICS: general concepts
matter
10. Sodium oxide reacts with water to produce sodium hydroxide. Suppose 11.1 g of sodium oxide is combined
with 38.7 g of water. When the reaction is complete, all the sodium oxide has been consumed. According to
the law of conservation of mass, which is a true statement?
a. The mass of sodium hydroxide produced must equal 49.8 g.
b. The mass of unreacted water must equal 27.6 g.
c. The mass of sodium hydroxide produced must equal 11.1 g.
d. The mass of water consumed must equal 11.1 g.
e. The mass of sodium hydroxide produced plus the mass of unreacted water must equal 49.8 g.
ANSWER: e
POINTS: 1
DIFFICULTY: difficult

Chapter 01 - Chemistry and Measurement
Copyright Cengage Learning. Powered by Cognero. Page 5
REFERENCES: 1.3
HAS VARIABLES: True
LEARNING OBJECTIVES: GENE.EBBI.13.3 - Apply the law of the conservation of mass. (Example 1.1)
TOPICS: general concepts
matter
KEYWORDS: Law of Conservation of Mass
OTHER: general chemistry
11. After a certain chemical reaction has completed, it is found that 19.6 g of product was produced. According
to the law of conservation of mass, which statement must be true?
a. The total mass consumed of all reactants was 19.6 g.
b. The mass consumed of each reactant was 19.6 g.
c. The mass of reactants consumed depends on the number of reactants present.
d. Before the reaction started, there was 19.6 g total of all reactants.
e. Before the reaction started, there was 19.6 g of each reactant.
ANSWER: a
POINTS: 1
DIFFICULTY: difficult
REFERENCES: 1.3
HAS VARIABLES: True
LEARNING OBJECTIVES: GENE.EBBI.13.3 - Apply the law of the conservation of mass. (Example 1.1)
TOPICS: general concepts
matter
KEYWORDS: Law of Conservation of Mass
OTHER: general chemistry
12. The state of matter for an

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Chapter 01 - Chemistry and Measurement
Copyright Cengage Learning. Powered by Cognero. Page 6
KEYWORDS: states of matter
OTHER: general chemistry
13. The state of matter for an object that has a definite volume but not a definite shape is the
a. elemental state.
b. gaseous state.
c. mixed state.
d. liquid state.
e. solid state.
ANSWER: d
POINTS: 1
DIFFICULTY: easy
REFERENCES: 1.4
HAS VARIABLES: False
LEARNING OBJECTIVES: GENE.EBBI.13.4 - Compare and contrast the three common states of matter: solid,
liquid, and gas.
TOPICS: general concepts
matter
KEYWORDS: states of matter
OTHER: general chemistry
14. Two types of pure substances are
a. compounds and heterogeneous solutions.
b. compounds and elements.
c. elements and homogeneous solutions.
d. compounds and homogeneous solutions.
e. elements and heterogeneous solutions.
ANSWER: b
POINTS: 1
DIFFICULTY: easy
REFERENCES: 1.4
HAS VARIABLES: False
LEARNING OBJECTIVES: GENE.EBBI.13.5 - Describe the classifications of matter: elements, compounds,
and mixtures (heterogeneous and homogeneous).
TOPICS: general concepts
matter
KEYWORDS: states of matter
OTHER: general chemistry
15. A sample that cannot be separated into two or more substances by physical means is
a. a heterogeneous mixture.
b.

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Chapter 01 - Chemistry and Measurement
Copyright Cengage Learning. Powered by Cognero. Page 7
c. either a compound or an element.
d. an element.
e. a homogeneous mixture.
ANSWER: c
POINTS: 1
DIFFICULTY: easy
REFERENCES: 1.4
HAS VARIABLES: False
LEARNING OBJECTIVES: GENE.EBBI.13.5 - Describe the classifications of matter: elements, compounds,
and mixtures (heterogeneous and homogeneous).
TOPICS: general concepts
matter
KEYWORDS: states of matter
OTHER: general chemistry
16. A solution is a
a. pure element.
b. pure mixture.
c. heterogeneous mixture.
d. homogeneous mixture.
e. pure compound.
ANSWER: d
POINTS: 1
DIFFICULTY: easy
REFERENCES: 1.4
HAS VARIABLES: False
LEARNING OBJECTIVES: GENE.EBBI.13.5 - Describe the classifications of matter: elements, compounds,
and mixtures (heterogeneous and homogeneous).
TOPICS: general concepts
matter
KEYWORDS: states of matter
OTHER: general chemistry
17. Which of the following is a mixture?
a. a homogeneous solution of sugar dissolved in water
b. bromine (a liquid with the formula Br2)

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DIFFICULTY: easy
REFERENCES: 1.4
HAS VARIABLES: False
LEARNING OBJECTIVES: GENE.EBBI.13.5 - Describe the classifications of matter: elements, compounds,
and mixtures (heterogeneous and homogeneous).
TOPICS: general concepts
matter
KEYWORDS: states of matter
18. A clear colorless liquid in an open beaker was heated to boiling. The liquid began to boil at 110°C, and as
vapors escaped, the temperature of boiling gradually increased to 115°C, at which point the heating was
stopped. On the basis of this information, we can say that the material in the beaker was a
a. pure compound.
b. homogeneous solution.
c. pure substance.
d. pure element.
e. heterogeneous solution.
ANSWER: b
POINTS: 1
DIFFICULTY: moderate
REFERENCES: 1.4
HAS VARIABLES: False
LEARNING OBJECTIVES: GENE.EBBI.13.5 - Describe the classifications of matter: elements, compounds,
and mixtures (heterogeneous and homogeneous).
TOPICS: general concepts
matter
KEYWORDS: states of matter
OTHER: general chemistry
19. Heating a certain pure solid completely decomposes it into a solid and a gas, each of which is also a pure
substance. Which

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REFERENCES: 1.4
HAS VARIABLES: False
LEARNING OBJECTIVES: GENE.EBBI.13.5 - Describe the classifications of matter: elements, compounds,
and mixtures (heterogeneous and homogeneous).
TOPICS: general concepts
matter
20. All of the following are examples of mixtures except
a. supermarket salt.
b. distilled water.
c. soft water.
d. hard water.
e. drugstore hydrogen peroxide.
ANSWER: b
POINTS: 1
DIFFICULTY: moderate
REFERENCES: 1.4
HAS VARIABLES: False
LEARNING OBJECTIVES: GENE.EBBI.13.5 - Describe the classifications of matter: elements, compounds,
and mixtures (heterogeneous and homogeneous).
TOPICS: general concepts
matter
KEYWORDS: states of matter
OTHER: general chemistry
21. All of the following are homogeneous mixtures except
a. sodium chloride and potassium chloride.
b. hydrogen gas and chlorine gas.
c. sodium chloride and potassium chloride solution.
d. mercury-zinc solution.
e. hydrochloric acid solution.
ANSWER: a
POINTS: 1
DIFFICULTY: moderate
REFERENCES: 1.4
HAS VARIABLES: False

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Chapter 01 - Chemistry and Measurement
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22. Which of the following is a homogeneous mixture?
a. gasoline
b. vegetable oil and water
c. sugar dissolved in water
d. A and C
e. A, B, and C
ANSWER: d
POINTS: 1
DIFFICULTY: moderate
REFERENCES: 1.4
HAS VARIABLES: False
LEARNING OBJECTIVES: GENE.EBBI.13.5 - Describe the classifications of matter: elements, compounds,
and mixtures (heterogeneous and homogeneous).
TOPICS: general concepts
matter
KEYWORDS: states of matter
OTHER: general chemistry
23. Which of the following statements is not correct?
a. The combustion of methane (a component of natural gas) is a chemical change.
b. The melting of ice is a physical change.
c. The dissolution of sugar in water is a chemical change.
d. The decomposition of sugar into carbon and water when mixed with sulfuric acid is a chemical
change.
e. The evaporation of gasoline is a physical change.
ANSWER: c
POINTS: 1
DIFFICULTY: easy
REFERENCES: 1.4
HAS VARIABLES:

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ANSWER: d
POINTS: 1
DIFFICULTY: easy
REFERENCES: 1.4
HAS VARIABLES: False
LEARNING OBJECTIVES: GENE.EBBI.13.6 - Understand the difference between chemical changes
(chemical reactions) and physical changes.
TOPICS: general concepts
matter
KEYWORDS: physical and chemical change
OTHER: general chemistry
25. Which of the following is an example of a chemical change?
a. alcohol evaporating
b. water boiling
c. skin burning in the sun
d. iodine vaporizing
e. ice melting
ANSWER: c
POINTS: 1
DIFFICULTY: easy
REFERENCES: 1.4
HAS VARIABLES: False
LEARNING OBJECTIVES: GENE.EBBI.13.6 - Understand the difference between chemical changes
(chemical reactions) and physical changes.
TOPICS: general concepts
matter
KEYWORDS: physical and chemical change
OTHER: general chemistry
26. Which of the following is an example of a chemical change?
a. silver tarnishing
b. iodine sublimating
c. alcohol boiling
d. sucrose dissolving
e. sodium chloride melting

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LEARNING OBJECTIVES: GENE.EBBI.13.6 - Understand the difference between chemical changes
(chemical reactions) and physical changes.
TOPICS: general concepts
matter
KEYWORDS: physical and chemical change
OTHER: general chemistry
27. The boiling of water is a
a. physical change because the water merely disappears.
b. chemical change because heat is needed for the process to occur.
c. physical change because the gaseous water is chemically the same as the liquid.
d. chemical and physical change.
e. chemical change because a gas (steam) is given off.
ANSWER: c
POINTS: 1
DIFFICULTY: moderate
REFERENCES: 1.4
HAS VARIABLES: False
LEARNING OBJECTIVES: GENE.EBBI.13.6 - Understand the difference between chemical changes
(chemical reactions) and physical changes.
TOPICS: general concepts
matter
KEYWORDS: physical and chemical change
OTHER: general chemistry

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OTHER: general chemistry
29. All the following are characteristic properties of phosphorus. Which one is a chemical property?
a. When exposed to air, white phosphorus will burn spontaneously, but red phosphorus will not.
b. Red phosphorus and white phosphorus are solid allotropic forms.
c. The white form is soluble in liquid carbon disulfide but is insoluble in water.
d. The red form of phosphorus is insoluble in both water and carbon disulfide.
e. The red form melts at about 600°C, and the white form melts at 44°C.
ANSWER: a
POINTS: 1
DIFFICULTY: easy
REFERENCES: 1.4
HAS VARIABLES: False
LEARNING OBJECTIVES: GENE.EBBI.13.7 - Distinguish between chemical properties, and physical
properties.
TOPICS: general concepts
matter
KEYWORDS: physical and chemical properties
OTHER: general chemistry
30. The term that is related to the reproducibility

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d. the accuracy of each measurement.
e. the number of significant figures in each measurement.
ANSWER: b
POINTS: 1
DIFFICULTY: easy
REFERENCES: 1.5
HAS VARIABLES: False
LEARNING OBJECTIVES: GENE.EBBI.13.8 - Define and use the terms precision and accuracy when
describing measured quantities.
TOPICS: general concepts
measurement
32. The figure below represents the bull’s eye target for an archer. The black dots represent where the archer’s
arrows hit:
How can this archer be described?
a. precise but not accurate
b. neither accurate nor precise
c. accurate and precise
d. accurate but not precise
e. cannot be described from the data presented
ANSWER: a
POINTS: 1
DIFFICULTY: easy
REFERENCES: 1.5
HAS VARIABLES: True
LEARNING OBJECTIVES: GENE.EBBI.13.8 - Define and use the terms precision and accuracy when
describing measured quantities.
TOPICS: general concepts
measurement
33. Which of the following statements concerning accuracy and precision is/are correct?
1. It is possible for a series of measurements to be both

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a. 1 only
b. 2 only
c. 1 and 2
d. 2 and 3
e. 1, 2, and 3
ANSWER: a
POINTS: 1
DIFFICULTY: moderate
REFERENCES: 1.5
HAS VARIABLES: False
LEARNING OBJECTIVES: GENE.EBBI.13.8 - Define and use the terms precision and accuracy when
describing measured quantities.
TOPICS: general concepts
measurement
NOTES: NEW
34. Two students determined the volume of a glass container three separate times (see table below). The true
volume of the container is 24.20 mL. Which statement correctly describes the students’ results?
Student A Student B
24.3 mL 24.89 mL
24.4 mL 24.87 mL
24.5 mL 24.88 mL
a. Student A’s results are the most accurate. Student B’s results are the most precise.
b. Student A’s results

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