Deck 1: Chemistry in Our Lives

Question 1

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

Answer 1

make the paste white

Question 2

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 2

strengthen tooth enamel

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

Which of the following is not a chemical?

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

Question 5

Which of the following is a chemical?

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

Question 6

12 is what percent of 36?

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

Question 7

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 8

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 9

The production of smog from NO gas requires ________.

A)nitrogen
B)chlorine
C)water
D)oxygen
E)CFCs

Question 10

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

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

Question 11

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

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

Question 12

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 13

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 14

For the equation -10 - (-4)= ________.

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

Question 15

One example of a chemical used in toothpaste is ________.

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

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

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

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

Question 18

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

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

Question 19

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

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

Question 20

The product of (-4)× (-5)is ________.

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

Question 21

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

Question 22

Titanium dioxide in toothpaste is used as a detergent.

Question 23

Calcium carbonate is used to sweeten toothpaste.

Question 24

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

Question 25

The chemical used to make cans and foil is ________.

Question 26

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

Question 27

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

Question 28

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

Question 29

An abrasive used in toothpaste is ________.

Question 30

Substances which prevent spoilage are called ________.

Question 31

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

Question 32

The first step in the scientific method is to________.

Question 33

Write 540 000 in scientific notation.

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

Question 34

The measurement 0.000 004 3 m,expressed correctly using scientific notation,is ________.

A)4.3 × m
B)4.3 × m
C)4.3 × m
D)0.43 × m
E)4.3 m

Question 35

Paracelsus was a Greek philosopher.

Question 36

The substances released when tissues are injured are ________.

Question 37

Write 0.000 000 33 in scientific notation.

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

Question 38

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

Question 39

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

Question 40

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

Question 41

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

Question 42

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