TEST BANK FOR CHEMISTRY ATOMS FIRST, 1ST EDITION : BURDGE

Chapter 1: Chemistry: The Science of Change 1. What is a unifying principle that explains a body of experimental observations? A) Law B) Hypothesis C) Theory D) Phenomena E) Prediction Ans: C Difficulty: Easy 2. What is defined as a tentative explanation for observations that are made that result in the formulation of this concept? A) Law B) Hypothesis C) Theory D) Phenomena E) Prediction Ans: B Difficulty: Easy 3. What is term used for findings that are summarized based on a pattern or trend? A) Law B) Hypothesis C) Theory D) Phenomena E) Prediction Ans: A Difficulty: Easy 4. Which of the following activities is not a part of good science? A) Proposing a theory D) Designing experiments B) Developing a hypothesis E) Indulging in speculation C) Making quantitative observations Ans: E Difficulty: Easy 5. Which one of the following is a "substance" in the sense of the word as used in your textbook? A) Air B) Tap water C) Sea water D) Water E) Toothpaste Ans: D Difficulty: Medium 6. Which of the following cannot be separated into a simpler substance by chemical means? A) Element D) Homogeneous mixture B) Emulsion E) Heterogeneous mixture C) Compound Ans: A Difficulty: Medium 7. If a liquid contains 60% sugar and 40% water throughout its composition then what is it called? A) Solute D) Heterogeneous mixture B) Compound E) Solvent C) Homogeneous mixture Ans: C Difficulty: Medium 8. Which of the following does not have a uniform composition throughout? A) Element D) Heterogeneous mixture B) Compound E) Solvent C) Homogeneous mixture Ans: D Difficulty: Easy