Free Printable Chemical Equations Review

1.

$Zn_{ }+O_2\ \rightarrow\ ZnO_{ }$

a)

$2\ Zn_{ }+O_2\ \rightarrow\ ZnO_{ }$

b)

$Zn_{ }+O_2\ \rightarrow\ 4\ ZnO_{ }$

c)

$2\ Zn_{ }+O_2\ \rightarrow\ 2\ ZnO_{ }$

d)

The equation is already balanced.

2.

$N_2+H_2=NH_3$

a)

$N_2+3\ H_2=2\ NH_3$

b)

$N_2+H_2=2\ NH_3$

c)

$N_2+1\ H_2=NH_3$

d)

This equation is already balanced.

3.

$B+F_{2\ }=\ BF_3$

a)

$2\ B+3\ F_{2\ }=\ \ 2\ BF_3$

b)

$B+3\ F_{2\ }=2\ BF_3$

c)

$2\ B+2\ F_{2\ }=\ 3\ BF_3$

d)

This equation is already balanced.

4.

$H_2+O_2\ =\ H_2O$

a)

$H_2\ +\ 2\ O_2\ =\ H_2O$

b)

$2\ H_2+2\ O_2\ =\ 2\ H_2O$

c)

This equation is already balanced.

d)

$2\ H_2\ +\ O_2\ =\ 2\ H_2O$

5.

True or False: Is the equation $3\ Fe+4\ H_2O\ =\ Fe_3O_4\ +\ 4\ H_2$ , balanced?

a)

True, this equation is balanced.

b)

False, this equation is not balanced.

6.

$HgCl\ +\ Cl_2\ =\ HgCl\ +\ Cl_2$

a)

$2\ HgCl\ +\ Cl_2\ =\ HgCl\ +\ Cl_2$

b)

$HgCl\ +\ Cl_2\ =\ 2\ HgCl\ +\ Cl_2$

c)

The equation is already balanced.

d)

$HgCl\ +\ 2\ Cl_2\ =\ HgCl\ +\ 2\ Cl_2$

7.

$KClO_3\ =\ KCl\ +\ O_2$

a)

$2\ KClO_3\ =\ 2\ KCl\ +\ 3\ O_2$

b)

This equation is already balanced.

c)

$2\ KClO_3\ =\ KCl\ +\ 3\ O_2$

d)

$2\ KClO_3\ =\ 3\ KCl\ +\ 3\ O_2$

8.

$Cl_2\ +\ NaBr\ =\ NaCl\ +\ Br_2$

a)

$Cl_2\ +\ 2\ NaBr\ =\ 2\ NaCl\ +\ Br_2$

b)

$Cl_2\ +\ 2\ NaBr\ =\ NaCl\ +\ Br_2$

c)

This equation is already balanced.

d)

$Cl_2\ +\ 2\ NaBr\ =\ 2\ NaCl\ +\ 2\ Br_2$

9.

$Na_3O\ +\ CO_2\ =\ Na_3CO_3$

a)

This equation is already balanced.

b)

$Na_3O\ +3\ CO_2\ =\ Na_3CO_3$

c)

$Na_3O\ +\ 3\ CO_2\ =\ 2\ Na_3CO_3$

d)

$3\ Na_3O\ +\ CO_2\ =\ Na_3CO_3$

10.

True or False: The equation $2\ Al_2O_3\ =\ 4\ Al\ +\ 2\ O_2$

a)

True, this equation is balanced.

b)

False, this equation is not balanced.

11.

$2O_{2\ }+\ N_{2\ }\rightarrow\ 2NO_2$

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

12.

$MgCl_2+Li_2CO_3\ \rightarrow\ MgCO_3\ +\ 2LiCl$

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

13.

$Pb\ +\ FeSO_4\ \rightarrow\ PbSO_4\ +\ Fe$

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

14.

$CaCO_3\ \rightarrow\ CaO+CO_2$

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

15.

$C_3H_6O\ +\ 4O_2\ \rightarrow\ 3CO\ +\ 3H_2O$

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

16.

Balanced?

a)

No, Team Captain America is stronger

b)

Yes

c)

No, Team Iron Man is stronger

Chemical Equations Review

Total questions: 16

Worksheet time: 24mins

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