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Balancing and naming reactions

Total questions: 25

Worksheet time: 1hrs 6mins

Name
Class
Date
1.
What mathematical function do coefficients perform in a balanced equation?
a)
addition
b)
subtraction
c)
multiplication
d)
division
2.

Balance the following:

____ Fe + ____ Cl2 → ____ FeCl3

a)
1,1,2
b)
1,3,1
c)
2,2,3
d)
2,3,2
3.

Balance the following:

____ Al + ____ O2 → ____ Al2O3

a)
2,3,4
b)
4,3,2
c)
1,1,2
d)
2,1,1
4.

Balancing the following:

____ Al + ____ HCl → ____ AlCl3 + ____ H2

a)
1,3,1,2
b)
2,3,2,3
c)
2,6,2,3
d)
3,2,6,2
5.

Balance the following:

____ H2SO4 + ____ NaNO2 → ____ HNO2 + ____ Na2SO4

a)
1,1,2,1
b)
1,2,2,1
c)
2,3,3,2
d)
4,3,2,1
6.

Which type of reaction is:

2 NaBr + Ca(OH)2 → CaBr2 + 2 NaOH

a)
Synthesis
b)
Single Displacement
c)
Double Displacement
d)
Combustion
7.
Which type of reaction is: C2H4 + 3 O2 → 2 CO2 + 2 H2O
a)
Synthesis
b)
Decomposition
c)
Single Displacement
d)
Combustion
8.

Which type of reaction is:

2 H3AsO4 → As2O5 + 3 H2O

a)
Synthesis
b)
Decomposition
c)
Single Displacement
d)
Combustion
9.

Which type of reaction is:

2 NH3 + H2SO4 → (NH4)2SO4

a)
Synthesis
b)
Decomposition
c)
Single Displacement
d)
Double Displacement
10.

Which type of reaction is:

3 Pb + 2 H3PO4 → 3 H2 + Pb3(PO4)2

a)
Synthesis
b)
Single Displacement
c)
Double Displacement
d)
Combustion
11.

Which type of reaction is:

C7H16 + 11 O2 → 7 CO2 + 8 H2O

a)

Synthesis

b)

Decomposition

c)

Single Displacement

d)

Combustion

12.

Which type of reaction is:

Ag2S → S + 2 Ag

a)

Synthesis

b)

Decomposition

c)

Single Displacement

d)

Double Displacement

13.

Which type of reaction is:

4 (NH4)3PO4 + 3 Pb(NO3)4 → 12 NH4NO3 + Pb3(PO4)4

a)
Synthesis
b)
Decomposition
c)
Single Displacement
d)
Double Displacement
14.

Which type of reaction is:

2 K + MgBr2 → 2 KBr + Mg

a)
Synthesis
b)
Decomposition
c)
Single Displacement
d)
Double Displacement
15.

The correct coefficients to correctly balance the following equation

____ C7H16 + ____ O2 --> ____ CO2 + ____ H2O

from left to right would be:

a)

2, 22, 14, 16

b)

1, 5, 3, 4

c)

1, 15/2, 7, 8

d)

1, 11, 7, 8

16.

Which of the following reactions reactions would be classified as single replacement?

a)

____ P4 + ____ O2 --> ____ P2O3

b)

____ Al + ____ HCl --> ____ H2 + ____ AlCl3

c)

____ SO2 + ____ Li2Se --> ____ SSe2 + ____ Li2O

d)

____ K + ____ Cl2 --> ____ KCl

17.

What coefficient would go in from of hydrogen cyanide (HCN) in order for this chemical equation to be correctly balanced?

__ HCN + ___ CuSO4 --> ___ H2SO4 + ___ Cu(CN)2

a)

4

b)

3

c)

2

d)

1

18.

Identify the double replacement reactions below?

a)

_ Na3PO4 + _ KOH --> _ NaOH + _ K3PO4

b)

_ AgNO3 + _ CuCl2 --> _ Cu(NO3)2 + _ AgCl(s)

c)

_ N2 + _ H2 --> _ NH3

d)

_ Al + _ HCl --> _ H2 + _ AlCl3

19.

Which type of reaction is:

2 NaBr + Ca(OH)2 → CaBr2 + 2 NaOH

a)

Synthesis

b)

Single Replacement

c)

Double Replacement

d)

Decomposition

20.

Which type of reaction is:

2 H3AsO4 → As2O5 + 3 H2O

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

21.

Which type of reaction is:

2 NH3 + H2SO4 → (NH4)2SO4

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

22.

Which type of reaction is:

3 Pb + 2 H3PO4 → 3 H2 + Pb3(PO4)2

a)

Synthesis

b)

Single Replacement

c)

Double Replacement

d)

Decompostion

23.
the starting materials in a chemical reaction
a)
Products
b)
Reactants
c)
Starters
d)
Enders
24.
a substance that is formed as the result of a chemical reaction
a)
Product 
b)
Reactant
c)
Starters
d)
Enders
25.

Identify the coefficients of the following equation?

___PCl5 + ___ H2O → ___ HCl + ___H3PO4

a)

1, 4, 5, 1

b)

1, 1, 6, 1

c)

1, 3, 8, 1

d)

1, 2, 2, 1