,Chapter 02 - Matter and Energy
1. Which of the following correctly matches each sample with its classification as macroscopic, microscopic, or
particulate?
Macroscopic Microscopic Particulate
a. protein molecule cat hair plant cell
b. protein molecule plant cell cat hair
c. plant cell cat hair protein molecule
d. cat hair plant cell protein molecule
e. cat hair protein molecule plant cell
ANSWER: d
RATIONALE: Analysis: A. Incorrect. See Section 2.1, Goal 1. B. Incorrect. See Section 2.1, Goal 1. C. Incorrect. See
Section 2.1, Goal 1. D. Correct E. Incorrect. See Section 2.1, Goal 1.
POINTS: 1
2. Which of the following is not a particulate sample of matter?
a. An oxygen molecule
b. A human egg cell
c. An electron
d. A nickel atom
e. A hemoglobin molecule
ANSWER: b
RATIONALE: Analysis: A. Incorrect. See Section 2.1, Goal 1. B. Correct. C. Incorrect. See Section 2.1, Goal 1. D.
Incorrect. See Section 2.1, Goal 1. E. Incorrect. See Section 2.1, Goal 1.
POINTS: 1
3. Which is the best definition of the term model, as it is used in chemistry?
a. A product from a kit from which molecules can be constructed
b. A computer image of a molecule
c. A representation of something else
d. A person who is photographed for scientific journals
e. A graph that shows the relationship between two variables
ANSWER: c
RATIONALE: Analysis: A. Incorrect. See Section 2.1, Goal 2. B. Incorrect. See Section 2.1, Goal 2. C. Correct. D.
Incorrect. See Section 2.1, Goal 2. E. Incorrect. See Section 2.1, Goal 2.
POINTS: 1
4. Why do chemists use models of atoms and molecules?
a. Use of models is more convenient and less expensive than using photographs from microscopes
b. Matter at the particulate level is too small to be seen
c. Chemists follow the tradition established by Watson and Crick
d. High-powered electron microscopes create computerized models of atoms and molecules
e. To illustrate textbooks and scientific reports with more color than black-and-white photographs of the atoms
and molecules
ANSWER: b
RATIONALE: Analysis: A. Incorrect. See Section 2.1, Goal 2. B. Correct. C. Incorrect. See Section 2.1, Goal 2. D.
Incorrect. See Section 2.1, Goal 2. E. Incorrect. See Section 2.1, Goal 2.
POINTS: 1
Copyright Cengage Learning. Powered by Cognero. Page 1
,Chapter 02 - Matter and Energy
5. Which state of matter is illustrated below?
a. Gas
b. Liquid
c. Solid
d. Both gas and solid
e. Both liquid and solid
ANSWER: b
RATIONALE: Analysis: A. Incorrect. See Section 2.2, Goal 3. B. Correct. C. Incorrect. See Section 2.2, Goal 3. D.
Incorrect. See Section 2.2, Goal 3. E. Incorrect. See Section 2.2, Goal 3.
POINTS: 1
6. Which of the following does not describe the gaseous state?
a. Same shape as a closed container
b. Same volume of a closed container
c. Random, independent particle movement
d. Easily compressed
e. All describe the gaseous state
ANSWER: e
RATIONALE: Analysis: A. Incorrect. See Section 2.2, Goal 3. B. Incorrect. See Section 2.2, Goal 3. C. Incorrect. See
Section 2.2, Goal 3. D. Incorrect. See Section 2.2, Goal 3. E. Correct.
POINTS: 1
7. Which of the following does not describe the liquid state?
a. Independent particle movement below the surface
b. Same shape as the bottom of the container
c. Constant volume
d. Pourable
e. All describe the liquid state
ANSWER: e
RATIONALE: Analysis: A. Incorrect. See Section 2.2, Goal 3. B. Incorrect. See Section 2.2, Goal 3. C. Incorrect. See
Section 2.2, Goal 3. D. Incorrect. See Section 2.2, Goal 3. E. Correct..
POINTS: 1
8. Examine the following particulate-level representation.
This change might be shown symbolically as which of the following?
Copyright Cengage Learning. Powered by Cognero. Page 2
, Chapter 02 - Matter and Energy
a.
b.
c.
d.
e.
ANSWER: c
RATIONALE: Analysis: A. Incorrect. See Section 2.8, Goal 13. B. Incorrect. See Section 2.8, Goal 13. C. Correct. D.
Incorrect. See Section 2.8, Goal 13. E. Incorrect. See Section 2.8, Goal 13.
POINTS: 1
9. Which of the following properties is/are classified as physical?
i. The odor of glass cleaning solution
ii. The color of chlorine gas
iii. The electrical conductivity of copper wire
iv. The ability of milk to sour
v. A compound does not react with bromine
a. i only
b. ii only
c. i and ii
d. i, ii, and iii
e. iv and v
ANSWER: d
RATIONALE: Analysis: A. Incorrect. See Section 2.3, Goal 4. B. Incorrect. See Section 2.3, Goal 4. C. Incorrect. See
Section 2.3, Goal 4. D. Correct. E. Incorrect. See Section 2.3, Goal 4.
POINTS: 1
10. Which of the following properties is/are classified as chemical?
i. The taste of honey
ii. The ability of hair to stretch
iii. The corrosive character of hydrochloric acid
iv. The combustibility of ethanol
v. The softness of talc
a. i and ii
b. i, ii, and v
c. iii only
d. iv only
e. iii and iv
ANSWER: e
RATIONALE: Analysis: A. Incorrect. See Section 2.3, Goal 4. B. Incorrect. See Section 2.3, Goal 4. C. Incorrect. See
Section 2.3, Goal 4. D. Incorrect. See Section 2.3, Goal 4. E. Correct.
POINTS: 1
11. Which of the following is a chemical property?
Copyright Cengage Learning. Powered by Cognero. Page 3
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