9) The Lewis structure of water has two sets of lone pair electrons 10) The form

Question

9) The Lewis structure of water has two sets of lone pair electrons 10) The formation of a gas is evidence of a chemical reaction while the emission of light is net Multiple Choice Questions (5 points each) 11) What is the definition of a scientific theory? A) a brief statement that summarizes past observations and predicts future ones B) a model that exp lains the underlying reasons for observations f a scientific opinion which others may disagree with ations and laws C) the equivalent o D) a method of learning that emphasizes reason as the way to understand the world E) none of the above 12) Which of the following is an example of an observation? A) All matter is composed of small, indestructible particles called atoms. B) Reactions occur due to the transfer of electrons. C) When a can of soda pop is opened, a fizzing sound is heard. D) Flammable objects contain phlogiston. D) Flammable objects contain phlogistorn. E) none of the above

Explanation / Answer

11 B

12 C

24 D

25 D

26 D

27 D

28 A

29 B

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