Chapter 01 - Molecular Reasons
TEST BANK FOR Chemistry in Focus: A Molecular View
of Our World 7th Edition Author:Nivaldo J. Tro ( All
Chapters Covered) Latest Edition 2026
FULL TEST BANK!!!
1|Page
, Chapter 01 - Molecular Reasons
1. Which of these is the best definition of matter?
a. The pull of gravity on an object.
b. Anything that has weight and volume.
c. Anything that has mass and occupies space.
d. Anything that is directly proportional to weight.
e. The measure of the amount of space an object occupies.
ANSW c
ER:
POINTS 1
:
2. Which of these statements is correct?
a. The amount of carbon on earth is essentially constant.
b. The amount of carbon on earth fluctuates with the seasons.
c. The amount of carbon on earth is increasing due to plant and animal growth.
d. The amount of carbon on earth is decreasing due to consumption of carbon based fuels.
e. Both B and C are correct.
ANSWER: a
POINTS: 1
3. The French chemist Antoine Lavoisier found that the weight of objects before burning and the weight of the
products after burning were equal. He concluded that the total weight did not change during a process. Which of
these best describes Lavoisier's conclusion?
a. From observation, Lavoisier created a scientific law.
b. From observation, Lavoisier created a scientific theory.
c. From scientific law, Lavoisier created a scientific theory.
d. From experimentation, Lavoisier created a scientific law.
e. From observation, Lavoisier created a scientific conclusion.
ANSWER: a
POINTS: 1
4. When using the scientific method, before experiments are done a should be established.
a. hypothesis
b. law
2|Page
, Chapter 01 - Molecular Reasons
c. theory
d. conclusion
ANSWER: a
POINTS: 1
5. A statement which summarizes the data obtained from a series of observations is known as a(n) .
a. observation
b. law
c. theory
d. conclusion
e. experiment
ANSWER: b
POINTS: 1
3|Page
, Chapter 01 - Molecular Reasons
6. Which of these is not part of the scientific method?
a. Observation
b. Law
c. Theory
d. Conclusion
e. Experiment
ANSWER: d
POINTS: 1
7. Which of these is the best definition of a scientific theory?
a. A prediction based on a limited number of observations.
b. A method of explaining observations that appears contradictory.
c. A broadly applicable generalization with virtually no exceptions.
d. A method for approaching problems that is used by all scientists.
e. A tentative model that describes the underlying cause of a physical behavior.
ANSWER: e
POINTS: 1
8. Which of these is the best definition of a scientific law?
a. A prediction based on a limited number of observations.
b. A method of explaining observations that appear contradictory.
c. A broadly applicable generalization with virtually no exceptions.
d. A method for approaching problems that is used by all scientists.
e. A rule made by scientists to ensure consistency in their observations.
ANSWER: c
POINTS: 1
9. A(n) is an explanation of a scientific observation.
a. law
b. theory
c. conclusion
d. prediction
4|Page
TEST BANK FOR Chemistry in Focus: A Molecular View
of Our World 7th Edition Author:Nivaldo J. Tro ( All
Chapters Covered) Latest Edition 2026
FULL TEST BANK!!!
1|Page
, Chapter 01 - Molecular Reasons
1. Which of these is the best definition of matter?
a. The pull of gravity on an object.
b. Anything that has weight and volume.
c. Anything that has mass and occupies space.
d. Anything that is directly proportional to weight.
e. The measure of the amount of space an object occupies.
ANSW c
ER:
POINTS 1
:
2. Which of these statements is correct?
a. The amount of carbon on earth is essentially constant.
b. The amount of carbon on earth fluctuates with the seasons.
c. The amount of carbon on earth is increasing due to plant and animal growth.
d. The amount of carbon on earth is decreasing due to consumption of carbon based fuels.
e. Both B and C are correct.
ANSWER: a
POINTS: 1
3. The French chemist Antoine Lavoisier found that the weight of objects before burning and the weight of the
products after burning were equal. He concluded that the total weight did not change during a process. Which of
these best describes Lavoisier's conclusion?
a. From observation, Lavoisier created a scientific law.
b. From observation, Lavoisier created a scientific theory.
c. From scientific law, Lavoisier created a scientific theory.
d. From experimentation, Lavoisier created a scientific law.
e. From observation, Lavoisier created a scientific conclusion.
ANSWER: a
POINTS: 1
4. When using the scientific method, before experiments are done a should be established.
a. hypothesis
b. law
2|Page
, Chapter 01 - Molecular Reasons
c. theory
d. conclusion
ANSWER: a
POINTS: 1
5. A statement which summarizes the data obtained from a series of observations is known as a(n) .
a. observation
b. law
c. theory
d. conclusion
e. experiment
ANSWER: b
POINTS: 1
3|Page
, Chapter 01 - Molecular Reasons
6. Which of these is not part of the scientific method?
a. Observation
b. Law
c. Theory
d. Conclusion
e. Experiment
ANSWER: d
POINTS: 1
7. Which of these is the best definition of a scientific theory?
a. A prediction based on a limited number of observations.
b. A method of explaining observations that appears contradictory.
c. A broadly applicable generalization with virtually no exceptions.
d. A method for approaching problems that is used by all scientists.
e. A tentative model that describes the underlying cause of a physical behavior.
ANSWER: e
POINTS: 1
8. Which of these is the best definition of a scientific law?
a. A prediction based on a limited number of observations.
b. A method of explaining observations that appear contradictory.
c. A broadly applicable generalization with virtually no exceptions.
d. A method for approaching problems that is used by all scientists.
e. A rule made by scientists to ensure consistency in their observations.
ANSWER: c
POINTS: 1
9. A(n) is an explanation of a scientific observation.
a. law
b. theory
c. conclusion
d. prediction
4|Page
