Chapter 1-25 Chapter 01 1. A hypothesis is a _____. a. well-tested unifying principle that explains a body of facts b. set of experiments designed to test a theory c. tentative explanation or predication based upon experimental observations d. set of quantitative data e. concise statement of behavior that is always the same under the same conditions ANSWER: c POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: True TOPICS: 1.1 Chemistry and Its Methods NOTES: Dynamic Question DATE CREATED: 3/5/2014 6:30 PM DATE MODIFIED: 1/29/2018 4:02 AM 2. Which of the following statements concerning green chemistry is not correct? 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 pose minimal risk for accidents. d. Raw materials should be renewable whenever technically and economically practical. e. Chemical syntheses should be done at extremely high temperatures to ensure harmful bacteria are destroyed. ANSWER: e POINTS: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.2 Sustainability and Green Chemistry DATE CREATED: 3/5/2014 6:30 PM DATE MODIFIED: 1/29/2018 4:07 AM 3. One of the following is not a description of gases. Which one is it? a. particles far apart b. relatively high densities c. expands infinitely on heating d. fills any container completely e. easily compressed ANSWER: b