Wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Chemical Formulas

Total questions: 35

Worksheet time: 23mins

Name
Class
Date
1.

How many elements are in C6H12O6?

a)

1

b)

2

c)

3

d)

4

2.

How many atoms of carbon (C) are in C6H12O6?

a)

3

b)

6

c)

12

d)

24

3.

Which is the correct formula for:

3 Hydrogen (H)

1 Sulfur (S)

4 Oxygen (O)

a)

H3SO4

b)

HSO4

c)

H4S3O

d)

H2O

4.

The blue numbers in the image below represent _______

a)

I don't know, and don't want to try

b)

Coefficients

c)

Subscripts

d)

none of the answers are correct

5.

How many TOTAL atoms are in:

H2SO4

a)

6

b)

5

c)

7

d)

3

6.

How many atoms of Sodium (Na) are in 6NaCl?

a)

1

b)

12

c)

3

d)

6

7.

What does the number 4 represent in 4NH3?

a)

Subscript

b)

Superscript

c)

Coefficient

8.

4CF2Cl2

a)

C = 4, F = 4, Cl = 2

b)

C = 1, F = 8, Cl = 8

c)

C = 4, F = 8, Cl = 8

d)

C = 1, F = 4, Cl = 8

9.

A ______ is a number written in front of a chemical formula.

a)

Coefficient

b)

Subscript

c)

Exponent

d)

Coordinator

10.

A subscript is the small number below the element symbol that tells the number of _______ of that element.

a)

atoms

b)

valence electrons

c)

protons

d)

elements

11.

How many atoms are present if there is no subscript following the element symbol?

a)

0

b)

2

c)

only 1

d)

1 million

12.
The red numbers in the image below represent ________
a)
subscripts
b)
coefficients
c)
I don't know, and don't want to try
d)
None of the answers are correct
13.

How many atoms are there TOTAL in: 2H2SO4

a)
6
b)

12

c)

14

d)

7

14.

What is the correct chemical formula for the compound pictured?

a)

H2

b)

H2O

c)

O2

d)

H2O2

15.

What does the subscript in a chemical formula tell you?

a)

How many molecules are present

b)

How many atoms are present

c)

How many elements are present

d)

How many neutrons are present

16.

Which of the models best represents CaCO3?

a)
b)
c)
d)
17.

What molecule is shown?

a)

NH4

b)

N1H4

c)

N1H3

d)

NH3

18.

Which formulas below have coefficients of 4? Check all that apply.

a)

4CO24CO_2

b)

4CH44CH_4

c)

4H2O24H_2O_2

d)

4Br34Br_3

19.

Which chemical formula below matches the image shown here?

a)

2H2O2H_2O

b)

H4O2H_4O_2

c)

4H2O4H2O

d)

2HO2HO

20.

How many atoms of Hydrogen are in H2O

a)

1

b)

2

c)

3

d)

more than 3

21.

H2SO4

a)

H = 2, S = 4, O = 4

b)

H = 2, S = 1, O = 4

c)

H = 8, S = 4, O = 4

d)

H = 2, SO = 4

22.

How many atoms of sulfur are in each molecule of H2SO4?

a)

1

b)

4

c)

2

d)

7

23.

Alanine is an amino acid with formula C3H7NO2. How many atoms in all are in each molecule of alanine?

a)

3

b)

7

c)

12

d)

13

24.

Which of the following accurately describes the chemical formula of the molecule shown above?

a)

3CH8O

b)

C3H7O

c)

C4H8O2

d)

C3H8O

25.

How many total atoms are in this formula? 3Zn2O3H

a)

6

b)

9

c)

18

26.

What is the coefficient for this formula? 9NaCl2

a)

9

b)

2

c)

1

d)

11

27.

CH2Cu8 - How many Copper atoms are in this formula?

a)

1

b)

2

c)

8

d)

16

28.

What is the subscript in this formula? 3N2ONe

a)

3

b)

2

c)

1

d)

5

29.

3CH2Cu8 - How many hydrogen (H) atoms are in this formula?

a)

9

b)

2

c)

6

d)

3

30.

How many molecules are in this formula? 3Zn2O3H

a)

6

b)

9

c)

3

31.

How many sodium (Na) atoms in this formula? 9NaCl2

a)

9

b)

18

c)

1

d)

27

32.

How many nitrogen (N) atoms in this formula? 3N2ONe

a)

3

b)

6

c)

2

d)

5

33.

How many elements are in this chemical formula?

NaOH

a)

1

b)

2

c)

3

d)

4

34.

How many elements and atoms are there in this formula?

CaClO3

a)

1, 5

b)

2, 4

c)

3, 5

d)

4, 4

35.

How many 4H2O2 molecules are present?

a)

1

b)

4

c)

2

d)

8

Similar Resources on Wayground

9 weeks science review

30 questions

9 weeks science review

quiz

Worksheet

•

8th Grade

LONG TEST ON EARTHQUAKE AND FAULTS

31 questions

LONG TEST ON EARTHQUAKE AND FAULTS

quiz

Worksheet

•

7th Grade - University

ELECTRICITY U6

37 questions

ELECTRICITY U6

quiz

Worksheet

•

6th Grade

8.5DE Chemical Formulas, Reactions, & Law of Conservation

40 questions

8.5DE Chemical Formulas, Reactions, & Law of Conservation

quiz

Worksheet

•

8th Grade

Force and motion E

35 questions

Force and motion E

quiz

Worksheet

•

7th - 8th Grade

Density

33 questions

Density

quiz

Worksheet

•

7th - 9th Grade

7th IIIB ACTIVITY THE DIGESTIVE SYSTEM

31 questions

7th IIIB ACTIVITY THE DIGESTIVE SYSTEM

quiz

Worksheet

•

7th Grade