Question 1

Working with a group of students can help you learn chemistry.

Accepted Answer

A) True 
 B)False

Question 2

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

Accepted Answer

A)  chemical.
B)  solid.
C)  wave.
D)  electric charge.
E)  element.F) A) and B)
G) B) and E)

Question 3

Titanium dioxide is a chemical used in toothpaste to

Accepted Answer

A)  make the paste white.
B)  disinfect the toothbrush.
C)  keep the paste from spoiling.
D)  remove plaque.
E)  strengthen tooth enamel.F) A) and D)
G) C) and D)

Question 4

An abrasive used in toothpaste is ________.

Accepted Answer

The answer of An abrasive used in toothpaste is ________....

Question 5

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

Accepted Answer

A)  study a little every day
B)  skip your instructor's office hours
C)  form a study group
D)  read the chapter before class
E)  work the sample problemsF) C) and D)
G) A) and E)

Question 6

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

Accepted Answer

A)  aspirins
B)  pain relievers
C)  nitrogen oxides
D)  chlorofluorocarbons
E)  prostaglandinsF) None of the above
G) All of the above

Question 7

Keeping a problem notebook will help you do well in your chemistry class.

Accepted Answer

A) True 
 B)False

Question 8

16 is what percent of 80?

Accepted Answer

A)  200%
B)  20%
C)  2%
D)  5%
E)  50%F) A) and B)
G) C) and D)

Question 9

Sodium fluorophosphate is a chemical used in toothpaste to

Accepted Answer

A)  make the paste white.
B)  disinfect the toothbrush.
C)  keep the paste from spoiling.
D)  remove plaque.
E)  strengthen tooth enamel.F) A) and B)
G) A) and C)

Question 10

Express each of the following numbers using scientific notation.
-0.000 860

Accepted Answer

The answer of Express each of the following numbers using...

Question 11

The first step in the scientific method is to ________.

Accepted Answer

The answer of The first step in the scientific method...

Question 12

Which of the following is a chemical?

Accepted Answer

A)  sugar
B)  heat
C)  light
D)  noise
E)  a waveF) C) and D)
G) C) and E)

Question 13

Any material used in or produced by a chemical reaction is a ________.

Accepted Answer

The answer of Any material used in or produced by...

Question 14

A substance that consists of one type of matter and always has the same composition and properties is called a ________.

Accepted Answer

The answer of A substance that consists of one type...

Question 15

The chemical used to make cans and foil is ________.

Accepted Answer

The answer of The chemical used to make cans and...

Question 16

3.5 × 103 is equal to 3500.

Accepted Answer

A) True 
 B)False

Question 17

Titanium dioxide in toothpaste is used as a detergent.

Accepted Answer

A) True 
 B)False

Question 18

One example of a chemical used in toothpaste is

Accepted Answer

A)  chlorine.
B)  sulfur.
C)  carbon dioxide.
D)  calcium carbonate.
E)  sugar.F) B) and D)
G) C) and D)

Question 19

The substances released when tissues are injured are ________.

Accepted Answer

The answer of The substances released when tissues are injured...

Question 20

Written in scientific notation, 0.000 000 33 is

Accepted Answer

A)  3.3 × 107.
B)  3.3 × 10-7.
C)  3.3 × 10-8.
D)  3.3 × 108.
E)  3.3.F) D) and E)
G) A) and D)

Exam 1: Chemistry in Our Lives

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The substances released when tissues are injured are ________.

Correct AnswerverifiedShow Answer

Titanium dioxide is a chemical used in toothpaste to

Correct AnswerverifiedShow Answer

Sodium fluorophosphate is a chemical used in toothpaste to

Correct AnswerverifiedShow Answer

16 is what percent of 80?

Correct AnswerverifiedShow Answer

The chemical used to make cans and foil is ________.

Correct AnswerverifiedShow Answer

An abrasive used in toothpaste is ________.

Correct AnswerverifiedShow Answer

Keeping a problem notebook will help you do well in your chemistry class.

Correct AnswerverifiedShow Answer

3.5 × 103 is equal to 3500.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following is a chemical?

Correct AnswerverifiedShow Answer

Express each of the following numbers using scientific notation. -0.000 860

Correct AnswerverifiedShow Answer

Working with a group of students can help you learn chemistry.

Correct AnswerverifiedShow Answer

A substance that consists of one type of matter and always has the same composition and properties is called a ________.

Correct AnswerverifiedShow Answer

The first step in the scientific method is to ________.

Correct AnswerverifiedShow Answer

Written in scientific notation, 0.000 000 33 is

Correct AnswerverifiedShow Answer

Titanium dioxide in toothpaste is used as a detergent.

Correct AnswerverifiedShow Answer

Any material used in or produced by a chemical reaction is a ________.

Correct AnswerverifiedShow Answer

One example of a chemical used in toothpaste is

Correct AnswerverifiedShow Answer

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3.5 × 10³ is equal to 3500.

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