Chemistry in Focus A Molecular View of Our World 5th Edition by Nivaldo J. Tro – Test Bank
Chapter 1—Molecular Reasons
MULTIPLE CHOICE
- 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. |
ANS: C PTS: 1
- 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. |
ANS: A PTS: 1
- 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. |
ANS: A PTS: 1
- When using the scientific method, before experiments are done a ___________ should be established.
| a. | hypothesis |
| b. | law |
| c. | theory |
| d. | conclusion |
ANS: A PTS: 1
- 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 |
ANS: B PTS: 1
- Which of these is not part of the scientific method?
| a. | observation |
| b. | law |
| c. | theory |
| d. | conclusion |
| e. | experiment |
ANS: D PTS: 1
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