Chapter 1: Chemistry: The Study of Change 1. A tentative explanation for a set of observations that can be tested by further experimentation is referred to as A) a hypothesis. B) a law. C) a theory. D) none of the above. Ans: A Category: Easy Section: 1.3 2. A concise verbal or mathematical statement of a relationship between phenomena that is always the same under the same conditions is referred to as A) a hypothesis. B) a law. C) a theory. D) none of the above. Ans: B Category: Easy Section: 1.3 3. A unifying principle that explains a body of facts and relations is referred to as A) a hypothesis. B) a law. C) a theory. D) none of the above. Ans: C Category: Easy Section: 1.3 4. Complete the following sentence. A hypothesis is A) a tentative explanation for a set of observations that can be tested by further experimentation. B) a statement describing a relationship between phenomena that is always the same under the same conditions. C) a unifying principle that explains a body of facts and relations. D) a model used to visualize the invisible. Ans: A Category: Easy Section: 1.3 5. Complete the following sentence. A scientific law is A) a tentative explanation for a set of observations that can be tested by further experimentation. B) a statement describing a relationship between phenomena that is always the same under the same conditions. C) a unifying principle that explains a body of facts and relations. D) a model used to visualize the invisible. Ans: B Category: Easy Section: 1.3 6. Complete the following sentence. A theory is A) a tentative explanation for a set of observations that can be tested by further experimentation. B) a statement describin