Test Bank For Chemistry Atoms First 1st Edition By Burdge Overby
Chapter 1: Chemistry: The Science of Change
| 1. | What is a unifying principle that explains a body of experimental observations? |
| A) Law B) Hypothesis C) Theory D) Phenomena E) Prediction | |
| Ans: C Difficulty: Easy |
| 2. | What is defined as a tentative explanation for observations that are made that result in the formulation of this concept? |
| A) Law B) Hypothesis C) Theory D) Phenomena E) Prediction | |
| Ans: B Difficulty: Easy |
| 3. | What is term used for findings that are summarized based on a pattern or trend? |
| A) Law B) Hypothesis C) Theory D) Phenomena E) Prediction | |
| Ans: A Difficulty: Easy |
| 4. | Which of the following activities is not a part of good science? | |||
| A) | Proposing a theory | D) | Designing experiments | |
| B) | Developing a hypothesis | E) | Indulging in speculation | |
| C) | Making quantitative observations | |||
| Ans: E Difficulty: Easy | ||||
| 5. | Which one of the following is a “substance” in the sense of the word as used in your textbook? |
| A) Air B) Tap water C) Sea water D) Water E) Toothpaste | |
| Ans: D Difficulty: Medium |
| 6. | Which of the following cannot be separated into a simpler substance by chemical means? | |||
| A) | Element | D) | Homogeneous mixture | |
| B) | Emulsion | E) | Heterogeneous mixture | |
| C) | Compound | |||
| Ans: A Difficulty: Medium | ||||
| 7. | If a liquid contains 60% sugar and 40% water throughout its composition then what is it called? | |||
| A) | Solute | D) | Heterogeneous mixture | |
| B) | Compound | E) | Solvent | |
| C) | Homogeneous mixture | |||
| Ans: C Difficulty: Medium | ||||
| 8. | Which of the following does not have a uniform composition throughout? | |||
| A) | Element | D) | Heterogeneous mixture | |
| B) | Compound | E) | Solvent | |
| C) | Homogeneous mixture | |||
| Ans: D Difficulty: Easy | ||||
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