1
Test Bank Complete__
Chemistry In Focus: A Molecular View Of Our World 7th Edition
By Nivaldo Tro
All Chapters 1-19|Latest With Answers And Detailed Explanation| Rated A+
,2
table of contents
chapter 1—molecular reasons .................................................................................................... 3
chapter 2—the chemist's toolbox ............................................................................................. 35
chapter 3—atoms and elements .............................................................................................. 58
chapter 4—molecules, compounds, and chemical reactions ................................................... 81
chapter 5—chemical bonding ................................................................................................. 106
chapter 6—organic chemistry ................................................................................................. 129
chapter 7—light and color ...................................................................................................... 152
chapter 8—nuclear chemistry ................................................................................................ 171
chapter 9—energy for today ................................................................................................... 192
chapter 10—energy for tomorrow: solar and other renewable energy sources ................... 212
chapter 11—the air around us ................................................................................................ 233
chapter 12—the liquids and solids around us: especially water ............................................ 254
chapter 13—acids and bases: the molecules responsible for sour and bitter ....................... 275
chapter 14—oxidation and reduction ..................................................................................... 296
chapter 15—the chemistry of household products ................................................................ 317
chapter 16—biochemistry and biotechnology ....................................................................... 336
chapter 17—drugs and medicine: healing, helping, and hurting ........................................... 358
chapter 18—the chemistry of food......................................................................................... 378
chapter 19—nanotechnology ................................................................................................. 397
,3
Chapter 1—molecular reasons
Multiple choice
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.
F. Anything that can be touched or seen.
G. Anything that has density and inertia.
Ans>> c pts: 1
Matter is defined as anything that has mass and occupies space (volume). Weight depends on
gravity, so it’s not part of the definition. Options b and e confuse weight and volume, while f
and g refer to properties of matter but do not define it completely.
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.
F. The amount of carbon on earth varies with volcanic activity.
G. The total carbon may change due to human influence.
Ans>> a pts: 1
, 4
Carbon on earth cycles between the atmosphere, oceans, living organisms, and rocks, but the
total amount remains essentially constant. Processes like respiration, photosynthesis, and
combustion only rearrange carbon, not increase or decrease its total quantity.
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.
F. From repeated trials, lavoisier proposed a model of conservation.
Ans>> a pts: 1
Lavoisier’s conclusion became the law of conservation of mass, a scientific law because it
summarizes a consistent experimental observation. Laws describe what happens, not why—
which makes it a law rather than a theory.
4. When using the scientific method, before experiments are done a ______ should be
established.
A. Hypothesis
B. Law
C. Theory
D. Conclusion
Test Bank Complete__
Chemistry In Focus: A Molecular View Of Our World 7th Edition
By Nivaldo Tro
All Chapters 1-19|Latest With Answers And Detailed Explanation| Rated A+
,2
table of contents
chapter 1—molecular reasons .................................................................................................... 3
chapter 2—the chemist's toolbox ............................................................................................. 35
chapter 3—atoms and elements .............................................................................................. 58
chapter 4—molecules, compounds, and chemical reactions ................................................... 81
chapter 5—chemical bonding ................................................................................................. 106
chapter 6—organic chemistry ................................................................................................. 129
chapter 7—light and color ...................................................................................................... 152
chapter 8—nuclear chemistry ................................................................................................ 171
chapter 9—energy for today ................................................................................................... 192
chapter 10—energy for tomorrow: solar and other renewable energy sources ................... 212
chapter 11—the air around us ................................................................................................ 233
chapter 12—the liquids and solids around us: especially water ............................................ 254
chapter 13—acids and bases: the molecules responsible for sour and bitter ....................... 275
chapter 14—oxidation and reduction ..................................................................................... 296
chapter 15—the chemistry of household products ................................................................ 317
chapter 16—biochemistry and biotechnology ....................................................................... 336
chapter 17—drugs and medicine: healing, helping, and hurting ........................................... 358
chapter 18—the chemistry of food......................................................................................... 378
chapter 19—nanotechnology ................................................................................................. 397
,3
Chapter 1—molecular reasons
Multiple choice
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.
F. Anything that can be touched or seen.
G. Anything that has density and inertia.
Ans>> c pts: 1
Matter is defined as anything that has mass and occupies space (volume). Weight depends on
gravity, so it’s not part of the definition. Options b and e confuse weight and volume, while f
and g refer to properties of matter but do not define it completely.
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.
F. The amount of carbon on earth varies with volcanic activity.
G. The total carbon may change due to human influence.
Ans>> a pts: 1
, 4
Carbon on earth cycles between the atmosphere, oceans, living organisms, and rocks, but the
total amount remains essentially constant. Processes like respiration, photosynthesis, and
combustion only rearrange carbon, not increase or decrease its total quantity.
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.
F. From repeated trials, lavoisier proposed a model of conservation.
Ans>> a pts: 1
Lavoisier’s conclusion became the law of conservation of mass, a scientific law because it
summarizes a consistent experimental observation. Laws describe what happens, not why—
which makes it a law rather than a theory.
4. When using the scientific method, before experiments are done a ______ should be
established.
A. Hypothesis
B. Law
C. Theory
D. Conclusion
