, Chapter 1 Test Bank
Keys to Studying Chemistry: Definitions, Units, and Problem Solving
1. 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
Accessibility: Keyboard Navigation
Bloom's: 2. Understand
Difficulty: Easy
Gradable: automatic
Subtopic: Classification and States of Matter
Topic: Study of Chemistry
2. Select the best statement.
A. Physical changes may be reversed by changing the temperature.
B. Physical changes alter the composition of the substances involved.
C. Physical properties are not valid characteristics for identifying a substance.
D. Physical properties are mostly extensive in nature.
E. Physical changes are usually accompanied by chemical changes.
Accessibility: Keyboard Navigation
Bloom's: 1. Remember
Difficulty: Easy
Gradable: automatic
Subtopic: Properties of Matter
Topic: Study of Chemistry
3. Select the best statement.
A. Chemical changes provide the only valid basis for identification of a substance.
B. Chemical changes are easily reversed by altering the temperature of the system.
C. Chemical changes always produce substances different from the starting materials.
D. Chemical changes are associated primarily with extensive properties.
E. Chemical changes are accompanied by changes in the total mass of the substances involved.
Accessibility: Keyboard Navigation
Bloom's: 1. Remember
Difficulty: Easy
Gradable: automatic
Subtopic: Properties of Matter
Topic: Study of Chemistry
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
Accessibility: Keyboard Navigation
Bloom's: 2. Understand
Difficulty: Easy
Gradable: automatic
Subtopic: Properties of Matter
Topic: Study of Chemistry
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.
Accessibility: Keyboard Navigation
Bloom's: 2. Understand
Difficulty: Medium
Gradable: automatic
Subtopic: Classification and States of Matter
Topic: Study of Chemistry
,A. kinetic energy only
B. potential energy only
C. both kinetic energy and potential energy
D. kinetic plus potential energy
E. None of these choices are correct.
Accessibility: Keyboard Navigation
Bloom's: 2. Understand
Difficulty: Hard
Gradable: automatic
Subtopic: Classification and States of Matter
Topic: Study of Chemistry
7. The most significant contribution to modern science made by alchemists was
A. their fundamental work in the transmutation of the elements.
B. their widespread acceptance of observation and experimentation.
C. their systematic method of naming substances.
D. their understanding of the nature of chemical reactions.
E. their discovery of phlogiston.
Accessibility: Keyboard Navigation
Bloom's: 1. Remember
Difficulty: Medium
Gradable: automatic
Subtopic: Scientific Method
Topic: Study of Chemistry
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.
Accessibility: Keyboard Navigation
Bloom's: 1. Remember
Difficulty: Medium
Gradable: automatic
Subtopic: Scientific Method
Topic: Study of Chemistry
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
Accessibility: Keyboard Navigation
Bloom's: 1. Remember
Difficulty: Easy
Gradable: automatic
Subtopic: Scientific Method
Topic: Study of Chemistry
10. A scientist made careful measurements of the pressure and temperature of many different gases. Based on these
measurements, he concluded that “the pressure of a fixed amount of gas, measured at constant volume, is directly
proportional to its absolute temperature.” This statement is best described as a
A. theory.
B. hypothesis.
C. law.
D. experiment.
E. definition.
Accessibility: Keyboard Navigation
Bloom's: 2. Understand
Difficulty: Medium
Gradable: automatic
Subtopic: Scientific Method
Topic: Study of Chemistry
Accessibility: Keyboard Navigation
Bloom's: 1. Remember
Difficulty: Easy
Gradable: automatic
Subtopic: Scientific Method
Topic: Study of Chemistry
12. A detailed explanation of natural phenomena that is generally accepted and has been extensively tested is called a
A. theory.
B. hypothesis.
C. law.
D. fact.
E. postulate.
Accessibility: Keyboard Navigation
Bloom's: 1. Remember
Difficulty: Easy
Gradable: automatic
Subtopic: Scientific Method
Topic: Study of Chemistry
13. 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
Accessibility: Keyboard Navigation
Bloom's: 3. Apply
Difficulty: Easy
Gradable: automatic
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry
14. The average distance from Earth to the Sun is 150 megameters. What is that distance in meters?
A. 1.5 × 108 m
B. 1.5 × 106 m
C. 1.5 × 105 m
D. 1.5 × 103 m
E. 1.5 × 10–6 m
Accessibility: Keyboard Navigation
Bloom's: 3. Apply
Difficulty: Easy
Gradable: automatic
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry
15. The mass of a sample is 550 milligrams. Which of the following expresses that mass in kilograms?
A. 5.5 × 108 kg
B. 5.5 × 105 kg
C. 5.5 × 10–4 kg
D. 5.5 × 10–6 kg
E. 5.5 × 10–1 kg
Accessibility: Keyboard Navigation
Bloom's: 3. Apply
Difficulty: Easy
Gradable: automatic
Subtopic: Measurement (SI Units)
Topic: Study of Chemistry
16. A dose of medication was prescribed to be 35 microliters. Which of the following expresses that volume in centiliters?
A. 3.5 × 105 cL
B. 3.5 × 104 cL
C. 3.5 cL
D. 3.5 × 10–4 cL
E. 3.5 × 10–3 cL
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