Question 1

For the equation -10 - (-4) =

Accepted Answer

A) 6. 
B) -6. 
C) 14. 
D) -14. 
E) 4. 
A) 6. 
B) -6. 
C) 14. 
D) -14. 
E) 4. B

Question 2

Written in scientific notation, 0.000 004 03 is

Accepted Answer

A) 4.03 × 10-7. 
B) 4.03 × 10-6. 
C) 4.03 × 106. 
D) 0.403 × 10-5. 
E) 4.03. 
A) 4.03 × 10-7. 
B) 4.03 × 10-6. 
C) 4.03 × 106. 
D) 0.403 × 10-5. 
E) 4.03. B

Question 3

2.25 × 10-4 is equal to 22500.

Accepted Answer

A) True 
 B)False  False

Question 4

Which of the following is not a chemical?

Accepted Answer

A) salt 
B) water 
C) light 
D) carbon dioxide 
E) sugar 
A) salt 
B) water 
C) light 
D) carbon dioxide 
E) sugar

Question 5

When -7 is added to -5 the answer is 12.

Accepted Answer

A) True 
 B)False

Question 6

In the number 45.678, the digit 6 is in the ________ place.

Accepted Answer

The answer of In the number 45.678, the digit 6...

Question 7

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

Accepted Answer

A) observation. 
B) hypothesis. 
C) experiment. 
D) theory. 
E) all the above 
A) observation. 
B) hypothesis. 
C) experiment. 
D) theory. 
E) all the above

Question 8

The product of (-4) × (-5) is

Accepted Answer

A) -20. 
B) +20. 
C) -1. 
D) +1. 
E) 0. 
A) -20. 
B) +20. 
C) -1. 
D) +1. 
E) 0.

Question 9

Express each of the following numbers using scientific notation.
-351 000 000 000

Accepted Answer

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

Question 10

Written in scientific notation, 8300 is

Accepted Answer

A) 8.3 × 102. 
B) 8.3 × 103. 
C) 8.3 × 104. 
D) 8.3 × 10-3. 
E) 8.3 × 10-2. 
A) 8.3 × 102. 
B) 8.3 × 103. 
C) 8.3 × 104. 
D) 8.3 × 10-3. 
E) 8.3 × 10-2.

Question 11

There is more traffic between 8 and 9 in the morning because most people start work at 9. This would be a(n)

Accepted Answer

A) observation. 
B) hypothesis. 
C) experiment. 
D) theory. 
E) all the above 
A) observation. 
B) hypothesis. 
C) experiment. 
D) theory. 
E) all the above

Question 12

12 is what percent of 36?

Accepted Answer

A) 3% 
B) 30% 
C) 33% 
D) 330% 
E) 12% 
A) 3% 
B) 30% 
C) 33% 
D) 330% 
E) 12%

Question 13

Doing experiments to test your hypothesis is part of the scientific method.

Accepted Answer

A) True 
 B)False

Question 14

One way to enhance your learning in chemistry is to

Accepted Answer

A) study a little every day. 
B) form a study group. 
C) go to office hours. 
D) be an active learner. 
E) all the above 
A) study a little every day. 
B) form a study group. 
C) go to office hours. 
D) be an active learner. 
E) all the above

Question 15

The first step in the scientific method is to draw a conclusion.

Accepted Answer

A) True 
 B)False

Question 16

Calcium carbonate is used to sweeten toothpaste.

Accepted Answer

A) True 
 B)False

Question 17

In the number 123.45, the digit 5 is in the hundreds place.

Accepted Answer

A) True 
 B)False

Question 18

Paracelsus was a Greek philosopher.

Accepted Answer

A) True 
 B)False

Question 19

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

Accepted Answer

A) tens 
B) ones 
C) tenths 
D) hundredths 
E) thousandths 
A) tens 
B) ones 
C) tenths 
D) hundredths 
E) thousandths

Question 20

It is a good idea to wait until the night before an exam to start to study.

Accepted Answer

A) True 
 B)False

Exam 1: Chemistry in Our Lives

For the equation -10 - (-4) =

Written in scientific notation, 0.000 004 03 is

2.25 × 10-4 is equal to 22500.

Which of the following is not a chemical?

When -7 is added to -5 the answer is 12.

In the number 45.678, the digit 6 is in the ________ place.

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

The product of (-4) × (-5) is

Express each of the following numbers using scientific notation. -351 000 000 000

Written in scientific notation, 8300 is

There is more traffic between 8 and 9 in the morning because most people start work at 9. This would be a(n)

12 is what percent of 36?

Doing experiments to test your hypothesis is part of the scientific method.

One way to enhance your learning in chemistry is to

The first step in the scientific method is to draw a conclusion.

Calcium carbonate is used to sweeten toothpaste.

In the number 123.45, the digit 5 is in the hundreds place.

Paracelsus was a Greek philosopher.

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

It is a good idea to wait until the night before an exam to start to study.

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

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2.25 × 10^-4 is equal to 22500.