Question 1

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

Question 2

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

Accepted Answer

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

Question 3

3.5 × 103 is equal to 3500.

Accepted Answer

A) True 
 B)False

Question 4

16 is what percent of 80?

Accepted Answer

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

Question 5

The chemical used to make cans and foil is ________.

Accepted Answer

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

Question 6

The first step in the scientific method is to ________.

Accepted Answer

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

Question 7

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 8

One example of a chemical used in toothpaste is

Accepted Answer

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

Question 9

Titanium dioxide in toothpaste is used as a detergent.

Accepted Answer

A) True 
 B)False

Question 10

The substances released when tissues are injured are ________.

Accepted Answer

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

Question 11

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

Accepted Answer

A) True 
 B)False

Question 12

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) prostaglandins 
A) aspirins 
B) pain relievers 
C) nitrogen oxides 
D) chlorofluorocarbons 
E) prostaglandins

Question 13

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 14

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

Accepted Answer

A) True 
 B)False

Question 15

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

Question 16

Which of the following is a chemical?

Accepted Answer

A) sugar 
B) heat 
C) light 
D) noise 
E) a wave 
A) sugar 
B) heat 
C) light 
D) noise 
E) a wave

Question 17

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

Question 18

An abrasive used in toothpaste is ________.

Accepted Answer

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

Question 19

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 problems 
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 problems

Question 20

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...

Exam 1: Chemistry in Our Lives

Written in scientific notation, 0.000 000 33 is

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

3.5 × 103 is equal to 3500.

16 is what percent of 80?

The chemical used to make cans and foil is ________.

The first step in the scientific method is to ________.

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

One example of a chemical used in toothpaste is

Titanium dioxide in toothpaste is used as a detergent.

The substances released when tissues are injured are ________.

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

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

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

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

Titanium dioxide is a chemical used in toothpaste to

Which of the following is a chemical?

Sodium fluorophosphate is a chemical used in toothpaste to

An abrasive used in toothpaste is ________.

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

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

Chemistry and Measurements

Energy and Matter

Atoms

Nuclear Chemistry

Ionic and Molecular Compounds

Chemical Reactions and Quantities

Gases

Solutions

Reaction Rates and Chemical Equilibrium

Acids and Bases

Introduction to Organic Chemistry: Hydrocarbons

Alcohols, Phenols, Thiols, and Ethers

Aldehydes, Ketones, and Chiral Molecules

Carbohydrates

Carboxylic Acids and Esters

Lipids

Amines and Amides

Amino Acids and Proteins

Enzymes and Vitamins

Nucleic Acids and Protein Synthesis

Metabolic Pathways for Carbohydrates

Metabolism and Energy Production

Metabolic Pathways for Lipids and Amino Acids

Filters

3.5 × 10³ is equal to 3500.