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Chapter 1 Chemistry in Our Lives


1.1 Multiple Choice Questions



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

A) chemical

B) solid

C) wave

D) electric charge

E) element

Answer: A

Objective: 1.1

Global: G2



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

A) salt

B) sleep

C) cold

D) heat

E) temperature

Answer: A

Objective: 1.1

Global: G2

,3) One example of a chemical used in toothpaste is ________.

A) chlorine

B) sulfur

C) carbon dioxide

D) calcium carbonate

E) sugar

Answer: D

Objective: 1.1

Global: G2



4) Which of the following is NOT a chemical?

A) salt

B) water

C) light

D) carbon dioxide

E) sugar

Answer: C

Objective: 1.1

Global: G2

,5) Sodium fluorophosphate is a chemical used in toothpaste to ________.

A) make the paste white

B) disinfect the toothbrush

C) keep the paste from spoiling

D) remove plaque

E) strengthen tooth enamel

Answer: E

Objective: 1.1

Global: G2



6) Chlorofluorocarbons are broken down in the atmosphere by ________.

A) nitrogen dioxide

B) ozone

C) iron

D) oxygen

E) ultraviolet light

Answer: E

Objective: 1.1

Global: G2



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

A) aspirins

B) pain relievers

C) nitrogen oxides

D) chlorofluorocarbons

, E) prostaglandins

Answer: E

Objective: 1.1

Global: G2



8) The production of smog from the chemical NO requires ________.

A) nitrogen

B) chlorine

C) water

D) oxygen

E) CFCs

Answer: D

Objective: 1.1

Global: G2



9) Chlorofluorocarbons are destructive to the ________.

A) ozone produced at ground level in traffic

B) water in the upper atmosphere

C) nitrogen dioxide in smog

D) ozone layer in the upper atmosphere

E) copper in telephone wiring

Answer: D

Objective: 1.1

Global: G2