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Classification of Chemical Reactions Mini-Review

Total questions: 48

Worksheet time: 36mins

Name
Class
Date
1.

Balance the equation

___Fe + ___ CuSO4 → ___FeSO4  +___  Cu

a)

1, 1, 1, 1

b)

2,1, 2, 1

c)

2, 2, 2, 2

d)

1, 2, 1, 2

2.

Balance the equation

___CH4  + ___ O2   →___CO2 + ___H2O

a)

1, 1, 1, 1

b)

2, 1, 2, 1

c)

2, 2, 2, 1

d)

1, 2, 1, 2

3.

Provide the correct classification for Fe + CuSO4 → FeSO4  + Cu

a)

Redox

b)

Precipitation

4.

Provide the correct classification for 2KNO3 →  2KNO2 + O2

a)

Redox

b)

Precipitation

5.

Provide the correct classification for Na2CrO4 + Ba(NO3)2 → BaCrO4 + 2NaNO3

a)

Redox

b)

Precipitation

6.

Provide the correct classification shown in the image.

a)

Redox

b)

Precipitation

7.

Provide the correct classification for Fe + CuSO4 → FeSO4  + Cu

a)

Single Replacement (SR)

b)

Double Replacement

c)

Combustion (C)

d)

Synthesis (S)

e)

Decomposition (D)

8.

Provide the correct classification for 2KNO3 →  2KNO2 + O2

a)

Single Replacement (SR)

b)

Double Replacement

c)

Combustion (C)

d)

Synthesis (S)

e)

Decomposition (D)

9.

Provide the correct classification for Na2CrO4 + Ba(NO3)2 → BaCrO4 + 2NaNO3

a)

Single Replacement (SR)

b)

Double Replacement

c)

Combustion (C)

d)

Synthesis (S)

e)

Decomposition (D)

10.

Provide the correct classification for the reaction shown in the image.

a)

Single Replacement (SR)

b)

Double Replacement

c)

Combustion (C)

d)

Synthesis (S)

e)

Decomposition (D)

11.

Match the correct oxidation number of the underlined red element Na2SO4

a)

0

b)

+2

c)

+4

d)

+7

12.

Match the correct oxidation number of the underlined red element CuO

a)

0

b)

+2

c)

+4

d)

+7

13.

Match the correct oxidation number of the underlined red element CO32-

a)

0

b)

+2

c)

+4

d)

+7

14.

Match the correct oxidation number of the underlined red element F2

a)

0

b)

+2

c)

+4

d)

+7

15.
2 C5H5 + Fe --> Fe(C5H5)2 
a)
single displacement
b)
double displacement
c)
decomposition
d)
synthesis
16.
2 RbNO3 + BeF2 --> Be(NO3)2 + 2 RbF
a)
single displacement
b)
double displacment
c)
decomposition
d)
synthesis
17.
Which of the following is an example of synthesis?
a)
Na + Br2 --> NaBr
b)
KClO3 --> KCl + O2
c)
HgO + Cl2-->HgCl + O2
d)
Cl2 + NaBr --> NaCl + Br2
18.
Which of the following is the general formula for a decomposition reaction?
a)
A + B  → AB
b)
AB → A + B
c)
AB + C → AC + B
d)
AB + CD → AC + BD
19.
2 AgNO3 + Cu --> Cu(NO3)2 + 2 Ag 
a)
single displacement
b)
double displacement
c)
decomposition
d)
synthesis
20.
A + BC →B + AC
a)
Single Replacement
b)
Decomposition
c)
Double Replacement
d)
Synthesis
21.
NO2 →N2 + O2
a)
Synthesis (combination)
b)
Decomposition
c)
Single replacement
d)
Combustion
22.
Mg + N2 →Mg3N2
a)
Synthesis (combination)
b)
Decomposition
c)
Single replacement
d)
Combustion
23.
2NaCl →2Na +Cl2
a)
Synthesis Reaction
b)
Decomposition Reaction
c)
Single Displacement Reaction
d)
Double Displacement Reaction
24.
 C + O2 → CO2
a)
Synthesis Reaction
b)
Decomposition Reaction
c)
Single Displacement Reaction
d)
Double Displacement Reaction
25.
The following is what type of reaction:
NH3 + HCl  → NH4Cl
a)
Synthesis
b)
Decomposition
c)
Single Replacement Replacement
d)
Double Replacement Replacement
26.
Which of the following is a sign that a chemical reaction has occurred?
a)
change in shape
b)
melting
c)
formation of a gas
d)
dissolving
27.
Which of the following describes a precipitate?
a)
a liquid forms when a block of metal is heated
b)
a solid forms when one liquid is poured into another
c)
a gas forms when a solid is placed in a liquid
d)
bubbles form when an acid is poured on a rock
28.

Which type of reaction has the general formula

AB + CD → AD + CB

a)

Double Replacement

b)

Single Replacement

c)

Synthesis

d)

Decomposition

e)

Combustion

29.

What type of reaction is illustrated above?

a)

Synthesis/Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

30.

What type of reaction is illustrated above?

a)

Synthesis/Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

31.

What type of reaction is illustrated above?

a)

Synthesis/Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

32.

What type of reaction is illustrated above?

a)

Synthesis/Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

33.

Which of the following terms best completes box #1 in the table?

a)

double replacement

b)

decomposition

c)

an element and a compound

d)

CO2 + H2O

e)

one compound

34.

Which of the following terms best completes box #2 in the table?

a)

double replacement

b)

decomposition

c)

an element and a compound

d)

CO2 + H2O

e)

one compound

35.

Which of the following terms best completes box #3 in the table?

a)

double replacement

b)

decomposition

c)

an element and a compound

d)

CO2 + H2O

e)

one compound

36.

Which of the following terms best completes box #4 in the table?

a)

double replacement

b)

decomposition

c)

an element and a compound

d)

CO2 + H2O

e)

one compound

37.

Which of the following terms best completes box #5 in the table?

a)

double replacement

b)

decomposition

c)

an element and a compound

d)

CO2 + H2O

e)

one compound

38.

Which substance is reduced in this reaction?

Mg  +  2HCl  →  MgCl2  +  H2

a)

H

b)

Cl

c)

Mg

39.

Which substance is the spectator ion in this reaction?

Mg  +  2HCl  →  MgCl2  +  H2

a)

H

b)

Cl

c)

Mg

40.

Which substance is oxidized in this reaction?

Mg  +  2HCl  →  MgCl2  +  H2

a)

H

b)

Cl

c)

Mg

41.

Which substance is reduced in this reaction?

2FeBr3  +  3Cl2 →  2FeCl3   + 3Br2

a)

Br

b)

Fe

c)

Cl

42.

Which substance is oxidized in this reaction?

2FeBr3  +  3Cl2 →  2FeCl3   + 3Br2

a)

Br

b)

Fe

c)

Cl

43.

Which substance is the spectator ion in this reaction?

2FeBr3  +  3Cl2 →  2FeCl3   + 3Br2

a)

Br

b)

Fe

c)

Cl

44.

Match the correct oxidation number of the underlined red element NaNO3

a)

0

b)

+2

c)

+4

d)

+5

45.

Match the correct oxidation number of the underlined red element ZnO

a)

0

b)

+2

c)

+4

d)

+5

46.

Match the correct oxidation number of the underlined red element CO32-

a)

0

b)

+2

c)

+4

d)

+5

47.

Match the correct oxidation number of the underlined red element Br2

a)

0

b)

+2

c)

+4

d)

+5

48.

Determine if this half-reaction represents oxidation or reduction.

  2F-  →  F2  +  2e-

a)

Oxidation

b)

Reduction

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