1.1 Multiple-Choice Questions

1 Copyright © 2016 Pearson Education, Inc.General, Organic & Biological Chemistry, 5e (Timberlake) Chapter 1 Chemistry in Our Lives

1.1 Multiple-Choice Questions

1) Water, H2O, is an example of a(n)

• chemical.
• solid.
• wave.
• electric charge.
• element.

Answer: A

Objective: 1.1

Global Outcomes: GO2

2) In this list, which substance can be classified as a chemical?

• salt
• sleep
• cold
• heat
• temperature

Answer: A

Objective: 1.1

Global Outcomes: GO2

3) One example of a chemical used in toothpaste is

• chlorine.
• sulfur.
• carbon dioxide.
• calcium carbonate.
• sugar.

Answer: D

Objective: 1.1

Global Outcomes: GO2

4) Which of the following is not a chemical?

• salt
• water
• light
• carbon dioxide
• sugar

Answer: C

Objective: 1.1

Global Outcomes: GO2

(General, Organic, and Biological Chemistry Structures of Life 5e Karen Timberlake ) (Test Bank all Chapters) 1 / 4

2 Copyright © 2016 Pearson Education, Inc.5) Sodium fluorophosphate is a chemical used in toothpaste to

• make the paste white.
• disinfect the toothbrush.
• keep the paste from spoiling.
• remove plaque.
• strengthen tooth enamel.

Answer: E

Objective: 1.1

Global Outcomes: GO2

6) Titanium dioxide is a chemical used in toothpaste to

• make the paste white.
• disinfect the toothbrush.
• keep the paste from spoiling.
• remove plaque.
• strengthen tooth enamel.

Answer: A

Objective: 1.1

Global Outcomes: GO2

7) When a part of the body is injured, substances called ________ are released.

• aspirins
• pain relievers
• nitrogen oxides
• chlorofluorocarbons
• prostaglandins

Answer: E

Objective: 1.1

Global Outcomes: GO2

8) Which of the following is a chemical?

• sugar
• heat
• light
• noise
• a wave

Answer: A

Objective: 1.1

Global Outcomes: GO2

9) You notice that there is more traffic between 8 and 9 in the morning. This would be a(n)

• observation.
• hypothesis.
• experiment.
• theory.
• all the above

Answer: A

Objective: 1.2

Global Outcomes: GO1 2 / 4

3 Copyright © 2016 Pearson Education, Inc.10) There is more traffic between 8 and 9 in the morning because most people start work at 9. This would be a(n)

• observation.
• hypothesis.
• experiment.
• theory.
• all the above

Answer: B

Objective: 1.2

Global Outcomes: GO1

11) One way to enhance your learning in chemistry is to

• study a little every day.
• form a study group.
• go to office hours.
• be an active learner.
• all the above

Answer: E

Objective: 1.2

Global Outcomes: GO2

12) In order to enhance your learning in chemistry, you should not

• study a little every day.
• form a study group.
• go to office hours.
• be an active learner.
• wait until the night before the exam to study.

Answer: E

Objective: 1.3

Global Outcomes: GO2

13) Which of the following would not be part of a study plan to learn chemistry?

• study a little every day
• skip your instructor's office hours
• form a study group
• read the chapter before class
• work the sample problems

Answer: B

Objective: 1.3

Global Outcomes: GO2

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4 Copyright © 2016 Pearson Education, Inc.14) In the number 12.345, the 4 is in the ________ place.

• tens
• ones
• tenths
• hundredths
• thousandths

Answer: D

Objective: 1.4

Global Outcomes: GO4

15) In the number 12.345, the 1 is in the ________ place.

• tens
• ones
• tenths
• hundredths
• thousandths

Answer: A

Objective: 1.4

Global Outcomes: GO4

16) In the number 12.345, the 3 is in the ________ place.

• tens
• ones
• tenths
• hundredths
• thousandths

Answer: C

Objective: 1.4

Global Outcomes: GO4

17) The product of (-4) × (-5) is

A) -20.

B) +20.

C) -1.

D) +1.

• 0.

Answer: B

Objective: 1.4

Global Outcomes: GO4

18) For the equation 4x + 2 = 10 , x equals

• 8.

B) 12.

• 3.
• 2.

E) -2.

Answer: D

Objective: 1.4

Global Outcomes: GO4

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