Free Printable Reaction Balancing

1.

Label the parts of the reaction

a)Formula

b)Direction Arrow

c)Reactant

d)Reactant

e)Product

1

2

3

4

5

1)

2)

3)

4)

5)

2.

Label the parts of a chemical equation.

a)Product

b)Reactant

c)Direction Arrow

d)Coefficients

e)Chemical Formula

f)State of matter

g)Subscript

1

2

3

4

5

6

7

1)

2)

3)

4)

5)

6)

7)

3.

In the equation, 2Mg + O₂ ---> 2MgO, which are the reactants?

a)

Mg and O

b)

MgO

c)

Mg and MgO

d)

O and MgO

4.

3Na₄

What is the coefficient?

a)

1

b)

2

c)

3

d)

4

5.

How many total atoms are present in the following:
3Al₂SO₄

a)

12

b)

21

c)

6

d)

3

6.

Which equation obeys the law of conservation of mass?

a)

H₂ + O₂ ------> H₂0

b)

C + 2H₂ ----> CH₄

c)

2Fe₂O₃ ------> 2O₂ + 4Fe

7.

True or False: When balancing chemical equations the subscripts can change.

a)

true

b)

false

8.

Is the following equation balanced or unbalanced?
Fe + S --> FeS

a)

balanced

b)

unbalanced

9.

Balance this reaction and choose the answer with the correct coefficients

____ Na₃PO₄ + ____ KOH ---> ____ NaOH + ____ K₃PO₄

a)

1,3,3,1

b)

1,3,2,1

c)

2,3,3,1

d)

1,1,3,1

10.

Balance this reaction and choose the answer with the correct coefficients

____ CH₄ + ____ O₂ ---> ___ CO₂ + ____ H₂O

a)

2,1,3,1

b)

1,2,1,2

c)

1,2,2,1

d)

2,1,1,2

11.

Balance this reaction and choose the answer with the correct coefficients

____ NaF + ____ Br₂ ---> ___ NaBr + ____ F₂

a)

3,1,2,1

b)

1,2,3,4

c)

2,1,2,1

d)

1,2,1,2

12.

Balance this reaction and choose the answer with the correct coefficients

____ RbNO₃ + ____ BeF₂ ----> ____ Be(NO₃)₂ + ____ RbF

a)

1,1,1,1

b)

1,2,1,1

c)

2,1,1,2

d)

2,1,2,1

13.

Balance the following and select the response with the correct coefficients

____ Fe + ____ Cl₂ → ____ FeCl₃

a)

1,1,2

b)

1,3,1

c)

2,2,3

d)

2,3,2

14.

What is the number at the beginning of a chemical formula which represents the number of molecules involved in a reaction?

a)

Product

b)

Coefficient

c)

Subscript

d)

Reactant

15.

Balance this equation:

(a) Fe + (b) O₂ --> (c) Fe₂O₃

Choose from the below words

4

3

2

1

0

16.

Balance the following reaction:

(a) CaC₂ + (b) H₂O → (c) C₂H₂ + (d) Ca(OH)₂

Choose from the below words

1

2

4

3

17.

Balance the following equation.

$H_2+N_2\ \rightarrow\ NH_3$

(Drag and drop the correct coefficient in front of each element.)

(a) H₂+ (b) N₂ → (c) NH₃

Choose from the below words

3

1

2

4

5

6

18.

Drag the correct coefficients to balance the following chemical equation:

(a) SnCl₄ + (b) Fe -----> (c) SnCl₂ + (d) FeCl₃

Choose from the below words

3

2

1

4

5

6

19.

Balance the following equation.

$Al+H_2O\ \rightarrow\ Al_2O_3+H_2$

(Drag and drop the correct coefficient in front of each element.)

(a) Al + (b) H₂O → (c) Al₂O₃ + (d) H₂

Choose from the below words

2

3

1

4

5

6

20.

(a) Ca₃N₂ + (b) Na → (c) Na₃N + (d) Ca

Choose from the below words

3

2

6

1

4

5

21.

Balance the following equation,

$Al\left(OH\right)_3\ \rightarrow\ Al_2O_3\ +\ H_2O$

(Drag and drop the correct coefficient in front of each element.)

(a) Al(OH)₃ → (b) Al₂O₃ + (c) H₂O

Choose from the below words

2

1

3

4

5

22.

(a) C₃H₈ + (b) O₂ → (c) CO₂ + (d) H₂O

Choose from the below words

4

3

5

1

2

6

23.

Balance the following reaction:

(a) Cl₂ + (b) Na₃N --> (c) NaCl + (d) N₂

Choose from the below words

3

2

6

1

4

5

24.

Select the correct coefficients to balance this equation

(a) P₄+ (b) O₂→ (c) P₄O₁₀

Choose from the below words

1

5

4

2

10

25.

(a) K₂MnO₄ + (b) H₂O --> (c) KMnO₄ + (d) MnO₂ + (e) KOH

Choose from the below words

6

4

5

7

8

9

2

3

1

Reaction Balancing

Total questions: 25

Worksheet time: 13hrs 30mins

Similar Resources on Wayground