Deck 1: Chemistry in Our Lives

Question 1

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

Answer 1

observation

Question 2

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

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

Answer 2

chemical

Question 3

For the equation 4 x (-3)/-2 = ________.

A)-6
B)+6
C)-12
D)+12
E)4

Answer 3

+6

Question 4

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

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

Question 5

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

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

Question 6

One way to enhance your learning in chemistry is to ________.

A)study a little every day
B)retest every few days
C)go to office hours
D)study different ideas at the same time
E)all the above

Question 7

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

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

Question 8

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

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

Question 9

The product of (-4)× (-5)is ________.

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

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

Which of the following is not a chemical?

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

Question 12

For the equation 2x +14 = -2,x equals ________.

A)8
B)-8
C)16
D)-16
E)6

Question 13

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 14

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 15

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 16

Which of the following is a chemical?

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

Question 17

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

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

Question 18

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)retest every few days
E)wait until the night before the exam to study

Question 19

One example of a chemical used in toothpaste is ________.

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

Question 20

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 21

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

Question 22

12 is what percent of 36?

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

Question 23

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

Question 24

Friday,a store sold 10 blue shirts and 20 white shirts.What percentage of the shirts sold were blue? Give answer to the ones place.

Question 25

Solve for x: 3x + 8 = -7

Question 26

The first step in the scientific method is to ________.

Question 27

The substances released when tissues are injured are ________.

Question 28

A product of -6/-2 = ________.

Question 29

Use the graph to estimate the solubility of sugar in 100 mL of water at 30 °C.

A)150 g
B)200 g
C)215 g
D)255 g
E)325 g

Question 30

A procedure that tests a hypothesis is a(an)________.

Question 31

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

Question 32

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

Question 33

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 34

Evaluate -12 - (-17)= ________.

Question 35

An abrasive used in toothpaste is ________.

Question 36

The chemical used to make cans and foil is ________.

Question 37

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

Question 38

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 39

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 40

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

Question 41

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

Question 42

Calcium carbonate is used to sweeten toothpaste.

Question 43

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

Question 44

An animal shelter has 12 dogs and 8 cats.Cats are 40% of the animals.

Question 45

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

Question 46

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

Question 47

Express each of the following numbers using scientific notation.
Titanium dioxide in toothpaste is used as a detergent.

Question 48

4300 expressed in scientific notation is 4.3 × .

Question 49

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

Question 50

2x + 9 = -3,x = 3

Question 51

-2 x 6 /-3 = 4

Question 52

Paracelsus was a Greek philosopher.