wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

CHEM C 2025 Semester 1 Review

Total questions: 91

Worksheet time: 49mins

Name
Class
Date
1.

The first step in the scientific method is ________.

a)

using technology

b)

making observations

c)

forming a hypothesis

d)

doing experiments

e)

proposing a theory

2.

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)

conclusion

3.

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)

conclusion

4.

The first step in using the scientific method is usually the testing of some natural event.

a)

True

b)

False

5.

In the scientific method, a hypothesis has more data to support it than a theory.

a)

True

b)

False

6.

A theory is confirmed after one experiment is performed.

a)

True

b)

False

7.

The use of observation and hypothesis are important steps in the transformation method.

a)

True

b)

False

8.

Identify the following: Drinking coffee at night keeps me awake.

a)

observation

b)

hypothesis

c)

experiment

d)

conclusion

9.

Identify the following: I will try drinking coffee only in the morning.

a)

observation

b)

hypothesis

c)

experiment

d)

conclusion

10.

If I stop drinking coffee in the afternoon, I will be able to sleep at night.

a)

observation

b)

hypothesis

c)

experiment

d)

conclusion

11.

When I drink decaffeinated coffee, I sleep better at night.

a)

observation

b)

hypothesis

c)

experiment

d)

conclusion

12.

I am going to drink only decaffeinated coffee.

a)

observation

b)

hypothesis

c)

experiment

d)

conclusion

13.

I sleep better at night because I stopped drinking caffeinated drinks.

a)

observation

b)

hypothesis

c)

experiment

d)

conclusion

14.

If experimental results do not support your hypothesis, you should

a)

pretend that the experimental results support your hypothesis

b)

modify your hypothesis

c)

do more experiments

15.

A hypothesis is supported when

a)

one experiment proves the hypothesis

b)

many experiments validate the hypothesis

c)

you think your hypothesis is correct

16.

During an assessment in the emergency room, a nurse writes that the patient has a resting pulse of 30 beats/min.

a)

observation

b)

hypothesis

c)

experiment

d)

conclusion

17.

A nurse thinks that an incision from a recent surgery that is red and swollen is infected.

a)

observation

b)

hypothesis

c)

experiment

d)

conclusion

18.

Repeated studies show that lowering sodium in the diet leads to a decrease in blood pressure.

a)

observation

b)

hypothesis

c)

experiment

d)

conclusion

19.

A patient has a high fever and a rash on her back.

a)

observation

b)

hypothesis

c)

experiment

d)

conclusion

20.

A nurse tells a patient that her baby who gets sick after drinking milk may be lactose intolerant.

a)

observation

b)

hypothesis

c)

experiment

d)

conclusion

21.

Numerous studies have shown that omega-3 fatty acids lower triglyceride levels

a)

observation

b)

hypothesis

c)

experiment

d)

conclusion

22.

Every spring, you have congestion and a runny nose.

a)

observation

b)

hypothesis

c)

experiment

d)

conclusion

23.

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

a)

True

b)

False

24.

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

a)

True

b)

False

25.

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

a)

True

b)

False

26.

A negative number multiplied by a positive number equals a positive number

a)

True

b)

False

27.

A negative number added to a negative number is a positive number

a)

True

b)

False

28.

Two positive numbers multiplied will always be positive

a)

True

b)

False

29.

The hundredths place is larger than the tenths place in a number

a)

True

b)

False

30.

In the number 534.123 the 4 is in the tens place

a)

True

b)

False

31.

45 is 90% of 50

a)

True

b)

False

32.

What is the dependent variable: ____________________________

a)

Temperature (°C)

b)

Time (minutes)

c)

Volume (mL)

d)

Mass (g)

33.

What are the units of the y-axis?

a)

°C (degrees Celsius)

b)

m (meters)

c)

kg (kilograms)

d)

s (seconds)

34.

What is the independent variable: ____________________________

a)

Time (hours since death)

b)

Temperature (°C)

c)

Amount of tissue

d)

Type of organism

35.

What are the units of the x-axis?

a)

hours (h)

b)

minutes (min)

c)

seconds (s)

d)

days (d)

36.

What is this graph describing?

a)

The graph is describing the relationship between distance and time.

b)

The graph is describing the relationship between temperature and time.

c)

The graph is describing the relationship between speed and acceleration.

d)

The graph is describing the relationship between mass and volume.

37.

What is the temperature at 15 hours?

a)

Approximately 28°C

b)

Approximately 22°C

c)

Approximately 31°C

d)

Approximately 25°C

38.

What is the time at approximately 39 °C?

a)

About 1 hours since death

b)

About 6 hours since death

c)

About 12 hours since death

d)

About 24 hours since death

39.

The reddish-brown color of smog is due to NO₂.

a)

True

b)

False

40.

Methyl salicylate is used in toothpaste as an abrasive.

a)

True

b)

False

41.

Titanium dioxide in toothpaste is used to give toothpaste a pleasant flavor.

a)

True

b)

False

42.

General chemistry is the study of the composition, properties, and reactions of matter.

a)

True

b)

False

43.

Organic chemistry is the study of substances that contain carbon.

a)

True

b)

False

44.

Geochemistry is the study of the chemical reactions that take place in the body.

a)

True

b)

False

45.

Chemistry is the study of the composition, structure, properties, and reactions of matter.

a)

True

b)

False

46.

A chemical is a substance that has the same composition and properties wherever it is found.

a)

True

b)

False

47.

A chemical free substance, like shampoo or sunscreen is really chemical free.

a)

True

b)

False

48.

12 is what percent of 36?

a)

3%

b)

30%

c)

33%

d)

330%

e)

12%

49.

When -5 is added to -3, the answer is 8.

a)

True

b)

False

50.

When -5 is multiplied by -3, the answer is 15.

a)

True

b)

False

51.

(-8) - (4) is -12.

a)

True

b)

False

52.

(-8) - (-4) is -12.

a)

True

b)

False

53.

If 2x + 2 = 8, x is 5.

a)

True

b)

False

54.

A negative added to a negative is positive

a)

True

b)

False

55.

A negative multiplied by a positive is positive

a)

True

b)

False

56.

Written in scientific notation, 0.00000403 is ________.

a)

4.03 × 10-7

b)

4.03 × 10-6

c)

4.03 × 106

d)

0.403 × 10-5

e)

4.03

57.

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

a)

True

b)

False

58.

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

a)

True

b)

False

59.

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

a)

True

b)

False

60.

3.5 × 103 is equal to 3500.

a)

True

b)

False

61.

2.25 × 10-4 is equal to 22500.

a)

True

b)

False

62.

45 is 90% of 50

a)

True

b)

False

63.

68% of 75 is 51

a)

True

b)

False

64.

The measurement of the gravitational pull on an object is its ________.

a)

volume

b)

weight

c)

mass

d)

length

e)

size

65.

The amount of space occupied by a substance is its _______.

a)

mass

b)

density

c)

weight

d)

length

e)

volume

66.

Which of the following is the basic unit of volume in the metric system?

a)

liter

b)

kilogram

c)

meter

d)

centimeter

e)

gram

67.

Which of the following is the SI unit of mass?

a)

milliliter

b)

centimeter

c)

kilogram

d)

Celsius

68.

A value of 25 °C is a measurement of _______.

a)

distance

b)

volume

c)

temperature

d)

mass

69.

Write the correct number of significant figures OR if ambiguous write “A”. Number: 35.18

a)

4

b)

2

c)

3

d)

A

70.

Write the correct number of significant figures OR if ambiguous write “A”. Number: 506

a)

3

b)

2

c)

1

d)

A

71.

Write the correct number of significant figures OR if ambiguous write “A”. Number: 90.11

a)

4

b)

2

c)

3

d)

A

72.

Write the correct number of significant figures OR if ambiguous write “A”. Number: 2000001

a)

7

b)

1

c)

2

d)

A

73.

Write the correct number of significant figures OR if ambiguous write “A”. Number: 4.53x1094.53 x 10^9

a)

3

b)

2

c)

4

d)

A

74.

Write the correct number of significant figures OR if ambiguous write “A”. Number: 0.0034

a)

1

b)

2

c)

3

d)

A

75.

Write the correct number of significant figures OR if ambiguous write “A”. Number: 0.008

a)

1

b)

2

c)

3

d)

A

76.

Write the correct number of significant figures OR if ambiguous write “A”. Number: 40805

a)

5

b)

4

c)

3

d)

A

77.

Write the correct number of significant figures OR if ambiguous write “A”. Number: 122.556

a)

6

b)

5

c)

4

d)

A

78.

Write the correct number of significant figures OR if ambiguous write “A”. Number: 5.00x1035.00 x 10^3

a)

3

b)

2

c)

4

d)

A

79.

Write the correct number of significant figures OR if ambiguous write “A”. Number: 9.400

a)

4

b)

2

c)

3

d)

A

80.

Write the correct number of significant figures OR if ambiguous write “A”. Number: 0.000670

a)

3

b)

2

c)

4

d)

A

81.

Write the correct number of significant figures OR if ambiguous write “A”. Number: 0.002040

a)

4

b)

2

c)

3

d)

A

82.

Match the following

a)

examine data or observations methodically in detail in order to explain or interpret.

1.

analyze

b)

evidence; information gathered from observations

2.

data

c)

a procedure carried out to gather data about an object or event

3.

investigation

d)

A summary based on evidence or facts

4.

conclusion

e)

A research method in which an investigator manipulates one independent variable to observe the effect on a dependent variable.

5.

experiment

83.

What is on the Y Axis?

a)

Days of the Week

b)

Number of Boxes

84.
How are the two brands of mixed nuts different?
a)
The are the same.
b)
They contain the different amounts of each type of nut.
c)
They contain the same six types of nuts.
d)
They contain different amounts of peanuts, almonds, Brazil nuts, and cashews only.
85.
About how many male math teachers were there in 2006?
a)
15
b)
30
c)
35
d)
45
86.

What goes on the x-axis? Choose all correct answers

a)

Independent Variable

b)

Dependent Variable

c)

Day of Week

d)

High Temperature

87.

Select all statements that are TRUE about the graph.

a)

The factory uses 4 gallons of water when it is in operation for 4000 hours.

b)

Point W represents the number of gallons of water used when the factory is in operation for 7 hours.

c)

The factory uses 9000 gallons of water when it is in operation for 9 hours.

88.

How much does it cost to have your lawn mowed for 2 hours?

a)

$16

b)

$17

c)

$18

d)

$19

89.

What is this graph showing you?

a)

The worlds population has been growing and will continue to grow

b)

The worlds population was growing but now is decreasing

c)

The worlds population is staying the same

90.

According to this graph, you are most likely to make a basket if you shoot...

a)

Closer to the hoop

b)

Farther from the hoop

c)

2 meters from the hoop

d)

4 meters from the hoop

91.

What is the general trend of this line graph?

a)

The more you mow, the more money you make

b)

The more you mow, the less money you make

c)

You make the same amount of money regardless of how long you mow

Similar Resources on Wayground

SI UNITS OF MEASUREMENT

93 questions

SI UNITS OF MEASUREMENT

quiz

Worksheet

•

8th - 12th Grade

B5 AQA Homeostasis

86 questions

B5 AQA Homeostasis

quiz

Worksheet

•

KG - 12th Grade

Unit 4 Bio Test Review

90 questions

Unit 4 Bio Test Review

quiz

Worksheet

•

9th - 12th Grade

Vertebrates

90 questions

Vertebrates

quiz

Worksheet

•

7th - 10th Grade

Integumentary Quiz

87 questions

Integumentary Quiz

quiz

Worksheet

•

10th Grade - University

Skin cancer

90 questions

Skin cancer

quiz

Worksheet

•

10th Grade

2023 Waves Unit Review

89 questions

2023 Waves Unit Review

quiz

Worksheet

•

9th - 12th Grade

PHSC 100 - Midterm Review

88 questions

PHSC 100 - Midterm Review

quiz

Worksheet

•

8th - 10th Grade