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Unit 5: Review: Reaction Types/Predicting/Balancing

Total questions: 60

Worksheet time: 2hrs 51mins

Name
Class
Date
1.

Fill in the blank. (Copper has a charge of 2+)

Cu+ AgNO3 → Ag + _____

a)

Cu(NO3)2

b)

CuNO3

c)

CuAg

d)

Cu

2.

What type of reaction is this?

2 C6H14 + 19 O2 → 12 CO2 + 14 H2O

a)

Single Replacement

b)

Double Replacement

c)

Combustion

d)

Decomposition

3.

Predict the products for the this Single Replacement reaction:

K + HCl →

a)

KCl + H2

b)

KHCl

c)

KH + Cl2

d)

HCl + K2

4.

Predict the products for the this Double Replacement reaction:

AgNO3 + KCl →

a)

AgCl + KNO3

b)

AgK + ClNO3

c)

KAg + NO3Cl

d)

AgCl + 3 KNO

5.

What are the products of this reaction:

C2H4 + O2 →

a)

C2O2 + H4

b)

CO2 + H2 + O2

c)

CO + H

d)

CO2 + H2O

6.
Which is the name of the kind of solid substance formed in this figure?  
a)
aqueous 
b)
precipitate
c)
acid
d)
synthesis 
7.

What are the correct coefficients when this equation is balanced? KClO3   →\rightarrow   KCl  +  O2

a)
2,2,2
b)
2,2,3
c)
1,2,3
d)
3,3,3
8.
In every balanced chemical equation, each side of the equation has the same number of ____.  
a)
coefficients
b)
moles
c)
molecules
d)
atoms of each element
9.

How many hydrogen atoms are in: 3(NH₄)₂CrO₄

a)

4

b)

6

c)

8

d)

24

10.
What are the correct formulas and coefficients for the products of the following single-replacement reaction?
Mg + Al(OH)3 →
a)
No Reaction
b)
Al + Mg(OH)3
c)
2 Al + 3 Mg(OH)2
d)
3 Al + MgOH3
11.

Write a balanced reaction for this reaction [Zn has a charge of 2+]

Zn(s) + H2S(aq) →

a)

ZnS + H

b)

ZnS + H2

c)

ZnS2 + H

d)

Zn2S + H2

12.

What are the correct formulas and coefficients for the products of the following single-replacement reaction?

Ag + K2SO4 →

a)

K2AgSO4

b)

K2 + AgSO4

c)

2K + Ag(SO)4

d)

2K + Ag2SO4

13.
What type of chemical reaction is this?
Al(OH)3 → Al2O3  + H2O
a)
Decomposition
b)
Combustion
c)
Synthesis
d)
Single Replacement 
14.

Describes the number of molecules in a reaction and is used to balance a chemical reaction. 

a)
coefficient 
b)
subscript
c)
superscript
d)
SI unit
15.

What are the products of this reaction? (copper(II) ion on the product side)

Cu+ AgNO3 →

a)

Cu(NO3)2+Ag

b)

Cu + NO3 + Ag

c)

CuAg+NO3

d)

Cu+ AgNO3

16.

In a reaction, Barium Chloride reacts with Potassium Carbonate. Identify both products

a)

barium chloride

b)

potassium chloride

c)

potassium bariumide

d)

barium carbonate

e)

potassium carbonbate

17.

Barium Bromide reacts with Lithium Phosphate. What are the products?

a)

Lithium Phosphate

b)

Lithium Bromide

c)

Barium Bromide

d)

Barium Phosphate

18.

Predict the products for the following decomposition reaction:

Ag­2O →\rightarrow  

a)
Ag + O
b)
Ag + O2
c)
AgO
d)
Ag2 + O
19.

What are the correct products for the following reaction?

SrCl2 + Na2SO4 →\rightarrow  

a)

SrNa2

b)

Cl2SO4

c)

NaCl

d)

SrSO4

e)

Na2Cl2

20.

Identify the products of this reaction:

CaCI2 + LiCO3 →

a)

CaCO3

b)

CaLi2

c)

LiCI

d)

ClCO3

21.

What are the products of this reaction:

C4H10 + O2 →

a)

C2O2 + H4

b)

CO2 + H2 + O2

c)

CO + H

d)

CO2 + H2O

22.
4Si + S8 --> 2Si2S4
a)
Synthesis
b)
Decomposition
c)
Single displacement
d)
Double displacement
23.
3Ca + 2AlCl3 --> 3CaCl2 + 2Al
a)
Synthesis
b)
Decomposition
c)
Single diplacement
d)
Double displacement
24.
2Pb(NO3)2 --> 2PbO + 4NO2 + O2
a)
Synthesis 
b)
Decomposition
c)
Single displacement
d)
Combustion
25.
3Mg + N2 --> Mg3N2
a)
Synthesis 
b)
Decomposition
c)
Single displacement
d)
Combustion
26.
2NO2 --> N2 + 2O2
a)
Synthesis
b)
Decomposition
c)
Single displacement
d)
Combustion
27.

P4 + 3O2  →\rightarrow   2P2O3

a)
Synthesis 
b)
Decomposition
c)
Single displacement
d)
Combustion
28.
Which chemical reaction switches 2 elements?
a)
Double Replacement
b)
Single Replacement
c)
Combustion
d)
Decomposition
29.

Fe + H2SO4  →\rightarrow   Fe2(SO4)3 + H2

a)
Synthesis (combination)
b)
Decomposition
c)
Single replacement
d)
Combustion
30.

Which reaction type is the following: C5H10O4 + O2 →\rightarrow   CO2 + H2O

a)
Decomposition
b)
Single Replacement
c)
Combustion
d)
Double Replacement
31.
When balancing equations a ____ can be placed to the left of a formula of a substance to make the equations balanced
a)
charge
b)
subscript
c)
random number
d)
coefficient
32.

What coefficient should be used to make the following equation balanced?

N2+O2 →\rightarrow   __ NO 

a)
1
b)
2
c)
3
d)
4
33.
Balance this equation:
 __Li + __Cl2 -> __LiCl
a)
2Li + Cl2 -> 4LiCl2
b)
2Li + Cl2 -> LiCl2
c)
2Li +  Cl2 -> 2LiCl
34.

3KOH + H3PO4 --> K3PO4 + 3H2O

a)

Synthesis

b)

Decomposition

c)

Single displacement

d)

Double displacement

e)

Neutralization

35.

Which of the following is the general formula for a decomposition reaction?

a)

A + B → C

b)

C → A + B

c)

AB + C → AC + B

d)

AB + CD → AC + BD

36.

Which reaction type is the following: C4H12 + O2 --> CO2 + H2O

a)

Synthesis

b)

Combustion

c)

Single Replacement

d)

Double Replacement

37.

PbCl2 + AgNO3 ---> Pb(NO3)2 + AgCl

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Neutralization

38.

Which reaction type is the following: H2SO4 + Fe -->H2 + FeSO4

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Neutralization

39.

What are the products of a combustion reaction?

a)

CO2 and H2O

b)

Salt and H2O

c)

Acid and Base

d)

Salt and an Ionic Compound

40.

What are the products of a combustion reaction?

a)

Acid and Base

b)

Salt and H2O

c)

CO2 and H2O

d)

Salt and an Ionic Compound

41.
What does the Law of Conservation of Mass state?
a)
Matter cannot be gained or lost in a chemical reaction.
b)
Matter can only be lost in a chemical reaction.
c)
Matter can only be gained in a chemical reaction.
d)
Matter can be gained and lost in a chemical reaction. 
42.
What is the little number after an element in a chemical equation called.
Example: H2
a)
Coefficient 
b)
Subscript
c)
Atom
d)
Equation
43.
Which side of a chemical equation is the product side?
a)
Left (before the arrow)
b)
Right (after the arrow)
44.
Which side of a chemical equation is the reactant side?
a)
Left (before the arrow)
b)
Right (after the arrow)
45.
What is the little number after an element in a chemical equation called.
Example: H2
a)
Coefficient 
b)
Subscript
c)
Atom
d)
Equation
46.
Which side of a chemical equation is the product side?
a)
Left (before the arrow)
b)
Right (after the arrow)
47.

Balance this equation- __P4 + __O2  →\rightarrow   __P2O3

a)
it is already balanced
b)
2, 1, 3
c)
1, 2, 3
d)
1, 3, 2
48.

Name the reactants

__P4 + __O2  →\rightarrow   __P2O3

a)

tetraphosphorous and dioxygen

b)

phosphorous and oxygen

c)

four phosphorous and dioxygen

d)

tetraphophide and dioxide

49.

Name the product in this reaction:

__P4 + __O2  →\rightarrow   __P2O3

a)

phorsphorous oxide

b)

phosphide oxide

c)

diphosphorous trioxide

d)

phosphorous oxygen

50.
Which side of a chemical equation is the reactant side?
a)
Left (before the arrow)
b)
Right (after the arrow)
51.

Balance this equation _Zn+_HCl →\rightarrow  _ZnCl2 +_H2

a)
1,1,2,1
b)
1,1,1,2
c)
1,2,1,1
d)
2,1,1,1
52.

Balance this equation. _Mg + _Cl2  →\rightarrow  _MgCl2

a)
1, 2,1
b)
already balanced
c)
2,1,1
d)
1,1,2
53.

Is this balanced?... Fe + S →\rightarrow   FeS

a)
YES!
b)
NO!
54.

In a chemical reaction the reactant side and the product side of the equations must have

a)

the same number of coefficients

b)

same number of subscripts

c)

same number of molecules

d)

the same number of atoms

55.

__KNO3 →\rightarrow   __KNO2 + __O2 What coefficients are needed to balance the reaction?

a)
2, 2, 1
b)
2, 3, 2
c)
1, 2, 2
d)
1, 3, 1
56.

Balance this equation.

__Al + __Cl2 →\rightarrow   __AlCl3

a)

1, 2, 2

b)

2, 3, 2

c)

2, 1, 1

d)

1, 1, 2

57.

Balance this equation. _CH4 + _O2  →\rightarrow   _CO2 + _H2O

a)
1,2,1,1
b)
2,1,2,1
c)
1,2,1,2
d)
0,2,0,2
58.

Balance this equation

Ba(NO3)2 + Li2SO4 →\rightarrow   LiNO3 + BaSO4

a)

1, 1, 1, 2

b)

1, 1, 1, 1

c)

2, 1 , 1, 2

d)

1, 1, 2, 1

59.

What is the arrow in a chemical equation...

H2 + O →\rightarrow   H2O

a)

Reactants

b)

Products sign

c)

Yield sign

d)

Chemical Equation

60.

Balance the following equation

Al + O2 →\rightarrow   Al2O3

a)

1, 1, 1

b)

2, 3, 1

c)

2, 3, 2

d)

4, 3, 2

e)

4, 2, 3

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