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Types of Reactions

Total questions: 21

Worksheet time: 21mins

Name
Class
Date
1.

Which chemical equation represents a decomposition reaction?

a)

2H2O → 2H2 + O2

b)

AgNO3 + LiCl → AgCl + LiNO3

c)

Ca + MgS → CaS + Mg

d)

2C2H6 + 7O2 → 4CO2 + 6H2O

2.

Which chemical equation is a model of a decomposition reaction?

a)

2Mg + O2 → 2MgO

b)

2NaCl → 2Na + Cl2

c)

3Na + FeBr3 → 3NaBr + Fe

d)

AgNO3 + NaCl → AgCl + NaNO3

3.

Which type of reaction does this chemical equation represent?

2Na + MgCl2 → 2NaCl + Mg

a)

Double-replacement

b)

Decomposition

c)

Synthesis

d)

Single-replacement

4.

Which type of reaction is modeled by this chemical equation?

2Li + CaCl2 → 2LiCl + Ca

a)

Single-replacement

b)

Double-replacement

c)

Synthesis

d)

Combustion

5.

Which equation represents the process of photosynthesis?

a)

6H2O + 6CO2 → C6H12O6 + 6O2

b)

C6H12O6 + 6O2 → 6H2O + 6CO2

c)

C2H4 + 3O2 → 2H2O + 2CO2

d)

2C2H6 + 7O2 → 4CO2 + 6H2O

6.

Which products are formed when propane (C3H8) undergoes combustion?

a)

Water and carbon dioxide

b)

Water and carbon

c)

Hydrogen and carbon dioxide

d)

Water, carbon dioxide, and oxygen

7.

Which products are formed when ethane (C2H6) undergoes combustion?

a)

H2O, CO2, and O2

b)

H2O and CO2

c)

H2O and C

d)

H2 and CO2

8.

Which product forms from a reaction between magnesium (Mg) and nitrogen (N)?

a)

Mg2N3

b)

MgN

c)

MgN2

d)

Mg3N2

9.

Which product forms from a reaction between calcium (Ca) and phosphorus (P)?

a)

Ca3P2

b)

Ca2P3

c)

CaP

d)

CaP2

10.
The following is what type of reaction:
PbCl2 + AgNO3 → Pb(NO3)2 + AgCl
a)
Synthesis
b)
Decomposition
c)
Single Replacement
d)
Double Replacement
11.
The following is what type of reaction:
NH3 + HCl  → NH4Cl
a)
Synthesis
b)
Decomposition
c)
Single Replacement Replacement
d)
Double Replacement Replacement
12.
What type of chemical reaction is this?
Al(OH)3 → Al2O3  + H2O
a)
Decomposition
b)
Combustion
c)
Synthesis
d)
Single Replacement 
13.
Ions in two compounds switch. 
a)
Synthesis
b)
Combustion
c)
Single Replacement
d)
Double Replacement
14.
3Ca + 2AlCl3 --> 3CaCl2 + 2Al
a)
Synthesis
b)
Decomposition
c)
Single Displacement
d)
Double Displacement
15.
One element replaces another in a compound.
a)
Synthesis
b)
Combustion
c)
Single Replacement
d)
Double Replacement
16.
Always starts with a Hydrocarbon that reacts with oxygen and produces carbon dioxide and water. 
a)
Decomposition
b)
Synthesis
c)
Combustion
d)
Single Replacement
17.
Two Reactants and One Product
a)
Decomposition
b)
Synthesis
c)
Combustion
d)
Single Replacement
18.
What type a reaction is taking place in this picture?
a)
Synthesis
b)
Decomposition
c)
Single Replacement
d)
Double Replacement
19.
4Si   + S8   -->   2Si2S4
a)
Synthesis
b)
Decomposition
c)
Single Displacement
d)
Double Displacement
20.
C4H12 + O2 → CO2 + H2O
a)
Synthesis
b)
Combustion
c)
Single Replacement
d)
Double Replacement
21.
3KOH + H3PO4 --> K3PO4 + 3H2O
a)
Synthesis 
b)
Decomposition
c)
Single displacement
d)
Double displacement

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