Free Printable Chemical Formulas #2

1.

How many nitrogen atoms are there?

a)

4

b)

8

c)

10

d)

20

2.

How many molecules of methane are there?

a)

0

b)

1

c)

2

d)

4

3.

How many carbon atoms are there?

a)

2

b)

3

c)

8

d)

16

4.

How many different kinds of elements are there?

a)

3

b)

4

c)

5

d)

6

5.

This appears on the left side of a chemical formula, and represents how many molecules there are.

a)

an atom

b)

the subscript

c)

a molecule

d)

the coefficient

6.

How many Sodium (Na) are in 6NaCl?

a)

1

b)

12

c)

6

7.

How many atoms are there TOTAL in:
H₂SO₄

a)

6

b)

5

c)

7

d)

3

8.

How many nitrogen atoms in
Mg(NO₃)₂

a)

1

b)

2

c)

3

d)

6

9.

How many magnesium atoms in
Mg(NO₃)₂

a)

1

b)

2

c)

3

d)

6

10.

How many oxygen atoms in
Mg(NO₃)₂

a)

1

b)

2

c)

3

d)

6

11.

What is the correct "inventory" for KClO₃

a)

K = 1 Cl = 3 O = 3

b)

K = 3 Cl = 3 O = 3

c)

K = 1 Cl = 1 O = 3

d)

K = 1 C = 1 l = 1 O = 3

12.

What is the coefficient in the formula?

a)

2

b)

N

c)

H

d)

3

13.

What is the subscript in the formula?

a)

2

b)

N

c)

H

d)

3

14.

What is the correct "inventory" for 3Al₂O₄

a)

Al = 6 O = 4

b)

Al = 6 O = 12

c)

Al = 2 O = 4

d)

Al = 3 O = 4

15.

Take inventory:

a)

H = 3

O = 3

b)

H = 6

O = 1

c)

H = 2

O = 1

d)

H = 6

O = 3

16.

Take inventory:

a)

H = 3

O = 3

b)

H = 6

O = 1

c)

H = 2

O = 1

d)

H = 6

O = 3

17.

Take inventory:

a)

H = 3

O = 3

b)

H = 9

O = 9

c)

H = 3

O = 9

d)

H = 3

O = 1

18.

Which element is found in all of these compounds?
C₃H₆H₂0
NaHCO₃CH₃(OH)

a)

Hydrogen

b)

Oxygen

c)

Sodium

d)

Carbon

19.

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

a)

3CH₈O

b)

C₃H₇O

c)

C₄H₈O₂

d)

C₃H₈O

20.

Which chemical formula below indicates that you have three molecules of water ( $H_2O$ )?

a)

$3H_2O$

b)

$H_6O_3$

c)

$6HO$

d)

$H_2O$

21.

Which chemical formula below matches the image shown here?

a)

$2H_2O$

b)

$H_4O_2$

c)

$4H2O$

d)

$2HO$

22.

$3H_2O$

Which image below matches this chemical formula?

a)

b)

c)

d)

23.

Which image below could represent this formula?

$2NaCl$

a)

b)

c)

d)

24.

What information does the coefficient tell us in an chemical formula?

a)

Amount of molecules

b)

Amount of atoms

c)

Amount of elements

25.

What information does the subscript tell us in a chemical formula?

a)

Amount of molecules

b)

Amount of elements

c)

Amount of compounds

Chemical Formulas #2

Total questions: 25

Worksheet time: 22mins

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