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Identifying Types of Reactions

Total questions: 50

Worksheet time: 44mins

Name
Class
Date
1.

The reaction XY ⟶ X + Y is an example of _____.

a)

synthesis

b)

decomposition

c)

single replacement

d)

double replacement

2.

The reaction AB + CD ⟶ AD + CB is an example of _____.

a)

synthesis

b)

decomposition

c)

single replacement

d)

double replacement

3.

The reaction A + B ⟶ AB is classified as a _____ reaction.

a)

synthesis

b)

decomposition

c)

single replacment

d)

double replacement

4.

The reaction C + D ⟶ CD is an example of a _____ reaction.

a)

synthesis

b)

decomposition

c)

single replacement

d)

double replacement

5.

The reaction AB + X ⟶ XB + A is classified as a _____ reaction.

a)

synthesis

b)

decomposition

c)

single replacement

d)

double replacement

6.

The reaction AB + XY ⟶ XB + AY is an example of ______.

a)

synthesis

b)

decomposition

c)

single replacement

d)

double replacement

7.

The reaction AY + BZ ⟶ AZ + BY is an example of ______.

a)

synthesis

b)

decomposition

c)

single replacement

d)

double replacement

e)

combustion

8.

What class of reaction best describes the equation below?

2HI ⟶ H2 + I2

a)

synthesis

b)

decomposition

c)

single replacement

d)

double replacement

9.

What type of reaction is represented by the following equation?

AgNO3 + NaCl ⟶ AgCl + NaNO3

a)

synthesis

b)

combustion

c)

single replacement

d)

double replacement

e)

decomposition

10.

What class of reaction best describes the equation below?

CH4 + O2 ⟶ CO2 + H2O

a)

single replacement

b)

double replacement

c)

decomposition

d)

combustion

e)

synthesis

11.

What type of reaction is represented by the following equation?

C6H12O6 + 6O2 ⟶ 6CO2 + 6H2O

a)

synthesis

b)

decomposition

c)

single replacement

d)

double replacement

e)

combustion

12.

What class of reaction best describes the equation below?

FeS + HCl ⟶ H2S + FeCl2

a)

synthesis

b)

combustion

c)

single replacement

d)

double replacement

e)

decomposition

13.

Which category of reaction is best represented by the equation below?

Zn + CuSO4 ⟶ ZnSO4 + Cu

a)

synthesis

b)

combustion

c)

single replacement

d)

double replacement

e)

decomposition

14.

What class of reaction best describes the reaction

Mg + HCl ⟶ MgCl2 + H2

a)

combustion

b)

synthesis

c)

decomposition

d)

single replacement

e)

double replacement

15.

The chemical equation

2 NaI + Br2 ⟶ 2 NaBr + I2

is best described as a _______ reaction.

a)

synthesis

b)

decomposition

c)

single replacement

d)

double replacement

16.

The chemical equation

Cl2 + 2 KBr ⟶ 2 KCl + Br2

is best described as a _______ reaction.

a)

synthesis

b)

decomposition

c)

single replacement

d)

double replacement

e)

combustion

17.

What class of reaction best describes the equation below?

MgCO3 ⟶ MgO + CO2

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

18.

What type of reaction is represented by the following equation?

CaCO3 ⟶ CaO + CO2

a)

Combustion

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Synthesis

19.

Which of the following chemical equations is an example of a combustion reaction?

a)

2Al2O3 ⟶ 4Al + 3O2

b)

2C5H10 + 15O2 ⟶ 10CO2 + 10H2O

c)

2MgCl2 + Na2CO3 ⟶ 2 NaCl + MgCO3

d)

K2O + H2O ⟶ 2 KOH

20.

Which of the following chemical equations represents a combustion reaction?

a)

CaCO3 ⟶ CaO + CO2

b)

2H2O2 ⟶ 2H2O + O2

c)

CH4 + 2O2 ⟶ CO2 + 2H2O

d)

AgNO3 + NaCl ⟶ AgCl + NaNO3

21.

Which of the following chemical equations is an example of a double replacement reaction?

a)

2Al2O3 ⟶ 4Al + 3O2

b)

2C5H10 + 15O2 ⟶ 10CO2 + 10H2O

c)

2MgCl2 + Na2CO3 ⟶ 2 NaCl + MgCO3

d)

K2O + H2O ⟶ 2 KOH

22.

Which of the following chemical equations is an example of a double displacement reaction?

a)

2Na + Cl2 ⟶ 2NaCl

b)

2H2O2 ⟶ 2H2O + O2

c)

2H2 + O2 ⟶ 2H2O

d)

2NaOH + H2SO4 ⟶ Na2SO4 + 2H2O

23.

Which of the following is an example of a decomposition reaction?

a)

2NaF ⟶ 2 Na + F2

b)

P2O5 + 3 H2O ⟶ 2H3PO4

c)

2FeCl3 + 3Zn ⟶ 2Fe + 3ZnCl2

d)

C6H12O6 + 6O2 ⟶ 6CO2 + 6 H2O

24.

Which of the following is an example of a single replacement reaction?

a)

2NaF ⟶ 2 Na + F2

b)

P2O5 + 3 H2O ⟶ 2H3PO4

c)

2FeCl3 + 3Zn ⟶ 2Fe + 3ZnCl2

d)

C6H12O6 + 6O2 ⟶ 6CO2 + 6 H2O

25.

Which of the following is an example of a synthesis reaction?

a)

Cl2 + 2NaBr ⟶ 2NaCl + Br2

b)

MgO + CO2 ⟶ MgCO3

c)

FeBr3 + K3PO4 ⟶ FePO4 + 3KBr

d)

2Na2O2 ⟶ 2Na2O + O2

26.

Classify the following chemical reaction: 

 

CaBr2 + AgNO3 ⟶ AgBr + Ca(NO3)2

a)

synthesis

b)

double replacement

c)

single replacement

d)

decomposition

27.

Classify the following reaction:

2 C5H5 + Fe ⟶ Fe(C5H5)2 

a)
single displacement
b)
double displacement
c)
decomposition
d)
synthesis
28.

Classify the following reaction:

2 RbNO3 + BeF2 ⟶ Be(NO3)2 + 2 RbF

a)
single displacement
b)

double displacement

c)
decomposition
d)
synthesis
29.

Classify this reaction:

NO2 →N2 + O2

a)

Synthesis

b)
Decomposition
c)
Single replacement
d)
Combustion
30.

Classify this reaction:

2H2 + O2 ⟶ 2H2O

a)

synthesis reaction

b)

decomposition reaction

c)

single replacement reaction

d)

double displacement reaction

31.

Classify this reaction:

2KClO3 ⟶ 2KCl + 3Os

a)

synthesis reaction

b)

decomposition reaction

c)

single replacement reaction

d)

double displacement reaction

32.

Classify:

2HCl + 2NaOH -----> NaCl + H2O

a)

synthesis reaction

b)

decomposition reaction

c)

single replacement reaction

d)

double replacement reaction

33.

Classify this reaction:,

CO2 + H2O ⟶ H2CO3 

a)
Decomposition
b)
Single Replacement
c)
Synthesis
d)
Combustion
34.

What class of reaction is this?

3KOH + H3PO4 ⟶ K3PO4 + 3H2O

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

35.

What class of reaction is this?

2Pb(NO3)2 ⟶ 2PbO + 4NO2 + O2

a)
Synthesis 
b)
Decomposition
c)
Single displacement
d)
Decombustion
36.

What class of reaction is this?

C3H6O + 4 O2 ⟶ 3 CO2 + 3 H2O 

a)
single replacement
b)
synthesis
c)
combustion
d)
decombustion
e)

double displacement

37.

Which of the following is an example of a single replacement reaction?

a)

2NaF ⟶ 2 Na + F2

b)

P2O5 + 3 H2O ⟶ 2H3PO4

c)

2FeCl3 + 3Zn ⟶ 2Fe + 3ZnCl2

d)

C6H12O6 + 6O2 ⟶ 6CO2 + 6 H2O

38.

Which of the following is an example of a decomposition reaction?

a)

2NaF ⟶ 2 Na + F2

b)

P2O5 + 3 H2O ⟶ 2H3PO4

c)

2FeCl3 + 3Zn ⟶ 2Fe + 3ZnCl2

d)

C6H12O6 + 6O2 ⟶ 6CO2 + 6 H2O

39.

Which of the following chemical equations is an example of a double displacement reaction?

a)

2Al2O3 ⟶ 4Al + 3O2

b)

2C5H10 + 15O2 ⟶ 10CO2 + 10H2O

c)

2MgCl2 + Na2CO3 ⟶ 2 NaCl + MgCO3

d)

K2O + H2O ⟶ 2 KOH

40.

Which of the following chemical equations is an example of a combustion reaction?

a)

2Al2O3 ⟶ 4Al + 3O2

b)

2C5H10 + 15O2 ⟶ 10CO2 + 10H2O

c)

2MgCl2 + Na2CO3 ⟶ 2 NaCl + MgCO3

d)

K2O + H2O ⟶ 2 KOH

41.

Which of the following is an example of a synthesis reaction?

a)

Cl2 + 2NaBr ⟶ 2NaCl + Br2

b)

MgO + CO2 ⟶ MgCO3

c)

FeBr3 + K3PO4 ⟶ FePO4 + 3KBr

d)

2Na2O2 ⟶ 2Na2O + O2

42.

Match the following reactions to the particle level models

a)
1.

single replacement

b)
2.

combustion

c)
3.

synthesis

d)
4.

double displacement

e)
5.

decomposition

43.

Match the following reactions to the correct description

a)
1.

single replacement

b)
2.

combustion

c)
3.

double displacement

d)
4.

synthesis

e)
5.

decomposition

44.

Classify this reaction:

NO2 →N2 + O2

a)

Synthesis

b)
Decomposition
c)
Single replacement
d)
Combustion
e)

Double displacement

45.

What type of reaction is illustrated above?

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Displacement

e)

Combustion

46.

What type of reaction is illustrated above?

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Displacement

e)

Combustion

47.

What type of reaction is illustrated above?

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Displacement

e)

Combustion

48.

Reactants combine to produce one product.

a)

single replacement

b)

double displacement

c)

synthesis

d)

combustion

49.

One reactant breaks down to produce simpler substances.

a)

synthesis reaction

b)

decomposition reaction

c)

single replacement reaction

d)

double displacement reaction

50.

A hydrocarbon burns in the presence of oxygen.

a)

synthesis reaction

b)

decomposition reaction

c)

single replacement reaction

d)

double displacement reaction

e)

combustion

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