Chemistry 101 Midterm Ivy Tech (1-4) Exam With Correct Answers

Chemistry 101 Midterm Ivy Tech (1-4) Exam With Correct Answers Which of the following would be considered a theory? a. glass is fragile b. hot air rises c. gasoline has a very strong odor. d. helium balloons float because helium is less dense than air. e. none of the above Correct Answer: D Which statement accurately describes the purpose of experiments? a. experiments are designed to produce the results predicted by a theory. b. experiments can be replaced by a simple, logical reasoning of known facts. c. experiments are designed to produce unexplainable results for further investigation. d. experiments look for other observable predictions of a theory. e. none of the above. Correct Answer: D What term best describes a brief statement that summarizes many past observations and predicts new ones? a. experiment b. hypothesis c. scientific law d. theory e. none of the above Correct Answer: C Which statement would NOT be an example of "quantification"? a. The newest model of that car gets five more miles per gallon than last year's model. b. The price of milk went up ten cents per gallon. c. The average high temperature this July was two degrees higher than last year's average high temperature. d. The water in the swimming pool feels colder than it was yesterday. e. None of the above. Correct Answer: D Who discovered the law of conservation of mass? a. John Dalton b. Antoine Lavoisier c. Nivaldo Tro d. John Dalton and Antoine Lavoisier