Chemistry and Chemical Reactivity 9th Edition By Kotz – Test Bank
MULTIPLE CHOICE
- A theory is a ________.
| a. | mathematical formula that models a pattern of behavior |
| b. | set of quantitative data |
| c. | well-tested unifying principle that explains a body of facts |
| d. | tentative explanation or predication based upon experimental observations |
| e. | set of experiments designed to test a theory |
ANS: C
- All of the following statements concerning green chemistry are correct EXCEPT
| a. | it is better to prevent waste than to treat or clean up waste after it is formed. |
| b. | synthetic methods should be designed to use and generate substances that possess little or no toxicity to human health or the environment. |
| c. | substances used in a chemical process should be chosen to minimize the potential for chemical accidents. |
| d. | raw materials should be renewable whenever technically and economically practical. |
| e. | chemical syntheses should be done at high enough temperatures to ensure harmful bacteria are destroyed. |
ANS: E
- One of the following is not a description of gases. Which one is it?
| a. | easily compressed |
| b. | particles in definite positions |
| c. | relatively low densities |
| d. | fills any container completely |
| e. | expands infinitely on heating |
ANS: B
- Which of the following statements concerning the kinetic-molecular theory of matter is/are CORRECT?
| 1. | Particles in a liquid vibrate back and forth about an average position. | |
| 2. | Particles in a solid are packed closely together, but are not confined to specific positions. | |
| 3. | Particles in a gas fly about randomly, colliding with themselves and the walls of their container. |
| a. | 1 only | b. | 2 only | c. | 3 only | d. | 1 and 2 | e. | 1, 2, and 3 |
ANS: C
- Which of the following statements concerning the kinetic-molecular theory of matter is/are CORRECT?
| 1. | Particles in a gas move faster as the temperature increases. | |
| 2. | Particles in a liquid are packed closely together, but are not confined to specific positions. | |
| 3. | Particles in a gas vibrate back and forth about an average position. |
| a. | 1 only | b. | 2 only | c. | 3 only | d. | 1 and 2 | e. | 1, 2, and 3 |
ANS: D
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