Deck 1: Chemistry in Our Lives

Question 1

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

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

Answer 1

tens

Question 2

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

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

Answer 2

skip your instructor's office hours

Question 3

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

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

Answer 3

tenths

Question 4

12 is what percent of 36?

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

Question 5

In the number 12.345, the 4 is in the ________ place.

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

Question 6

Which of the following is a chemical?

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

Question 7

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

A)salt
B)sleep
C)cold
D)heat
E)temperature

Question 8

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.

Question 9

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

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

Question 10

One example of a chemical used in toothpaste is

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

Question 11

One way to enhance your learning in chemistry is to

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 12

The product of (-4) × (-5) is

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

Question 13

For the equation -10 - (-4) =

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

Question 14

Which of the following is not a chemical?

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

Question 15

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

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

Question 16

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

A)study a little every day.
B)form a study group.
C)go to office hours.
D)be an active learner.
E)wait until the night before the exam to study.

Question 17

Titanium dioxide 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.

Question 18

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

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

Question 19

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

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

Question 20

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

A)8.
B)12.
C)3.
D)2.
E)-2.

Question 21

Written in scientific notation, 540 000 is

A)0.54 × 10⁶.
B)54 × 10⁸.
C)5.4 × 10^-5.
D)5.4 × 10⁵.
E)5.4.

Question 22

3.5 × 10³ is equal to 3500.

Question 23

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

Question 24

16 is what percent of 80?

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

Question 25

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

Question 26

Written in scientific notation, 8300 is

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

Question 27

Written in scientific notation, 0.000 004 03 is

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

Question 28

Titanium dioxide in toothpaste is used as a detergent.

Question 29

Written in scientific notation, 0.000 000 33 is

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

Question 30

Paracelsus was a Greek philosopher.

Question 31

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

Question 32

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

Question 33

Calcium carbonate is used to sweeten toothpaste.

Question 34

If a negative number is divided by another negative number, the answer will be a positive number.

Question 35

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

Question 36

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

Question 37

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

Question 38

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

Question 39

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

Question 40

2.25 × 10^-4 is equal to 22500.

Question 41

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

Question 42

Substances which prevent spoilage are called ________.

Question 43

The substances released when tissues are injured are ________.

Question 44

The second step in the scientific method is to ________.

Question 45

Express each of the following numbers using scientific notation.
0.000 000 050

Question 46

The first step in the scientific method is to ________.

Question 47

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

Question 48

Express each of the following numbers using scientific notation.
5 207 000

Question 49

The chemical used to make cans and foil is ________.

Question 50

An abrasive used in toothpaste is ________.

Question 51

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