chapter1q - Chapter 1 Keys to the Study of Chemistry...

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Chapter 1 Keys to the Study of Chemistry Created: 11:05:26 AM MST 4. Which of the following is a chemical change? A. boiling of water B. melting wax C. broiling a steak on a grill D. condensing water vapor into rainfall E. carving a piece of wood 5. Water vapor is less dense than ice because A. molecules in the gas phase are in constant motion. B. molecules in the gas phase have more potential energy than in solids. C. molecules in the gas phase have more kinetic energy than in solids. D. gaseous molecules have less mass. E. molecules in the gas phase have more space between them than in solids. 8. Select the best statement about chemistry before 1800. A. Alchemy focused on objective experimentation rather than mystical explanations of processes. B. The phlogiston theory laid a valuable theoretical basis for modern chemistry. C. Lavoisier's quantitative work on the role of oxygen in combustion was the beginning of modern chemistry. D. The interpretation of data by alchemists was not biased by their overall view of life. E. Alchemists failed because they did not develop any practical chemical methods. 9. Which of the following activities is not a part of good science? A. proposing a theory B. developing a hypothesis C. making quantitative observations D. designing experiments E. indulging in speculation 10. The distance between carbon atoms in ethylene is 134 picometers. Which of the following expresses that distance in meters? A. 1.34 × 10 -13 m B. 1.34 × 10 -12 m C. 1.34 × 10 -10 m D. 1.34 × 10 -7 m E. 1.34 × 10 -6 m 12. The mass of a sample is 550 milligrams. Which of the following expresses that mass in kilograms? A.
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This note was uploaded on 03/18/2010 for the course CHEM 210 taught by Professor Mcomber during the Spring '10 term at Skyline College.

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chapter1q - Chapter 1 Keys to the Study of Chemistry...

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