Chapter 1 An Introduction to Chemistry 1) Why study chemistry? A) to help inform us about our world B) to be better able to make informed decisions C) to help us learn a technique for identifying and solving problems D) all of these choices Answer: D Diff: 1 Learning Objective: State the definition of chemistry and why the study of chemistry is important. Section Reference: Section 1.1 2) The science of chemistry may involve: A) observation B) hypothesis development C) experimentation D) all of these choices Answer: D Diff: 1 Learning Objective: Describe the steps involved in the scientific method. Section Reference: Section 1.2 3) Which is an observation? A) Atoms consist of protons, neutrons, and electrons. B) All matter is composed of atoms. C) Water is colorless. D) Atoms can form chemical bonds by sharing electrons. Answer: C Diff: 1 Learning Objective: Describe the steps involved in the scientific method. Section Reference: Section 1.2 4) A tentative explanation of certain facts that provides the basis for further experimentation is a(n) ________. A) observation B) hypothesis C) theory D) law Answer: B Diff: 1 Learning Objective: Describe the steps involved in the scientific method.