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Chemical Reactions Review

Total questions: 51

Worksheet time: 2hrs 42mins

Name
Class
Date
1.

The products of a chemical reaction are on the

a)

Left side (Products → Reactants)

b)

Right side (Reactants → Products)

2.

The reactants of a reaction are on the

a)

Left side (Reactants → Products)

b)

Right side (Products → Reactants)

3.

Is this equation balanced? 
(Are there the same amount of H and O atoms on both sides of the equation?)

   H2O2→ H2O + O2H_2O_2\rightarrow\ H_2O\ +\ O_2  

a)

Yes

b)

No

4.

In the diagram, letter D represents a

a)

subscript

b)

coefficient

c)

product

d)

equation

5.

In the diagram, letter E represents a

a)

subscript

b)

coefficient

c)

product

d)

equation

6.

The law of conservation of mass can be demonstrated by a chemical reaction. Which of the following models of a chemical reaction best represents the law of conservation of mass?

a)
b)
c)
d)
7.

Choose the correct coefficients that balance the following equation.

Ca + N2 --->Ca3N2

a)

1,3,3

b)

2,3,1

c)

3,1,1

d)

4,1,3

8.

What type of reaction is occuring?

2 FeCl3 --> 2 Fe + 3 Cl2

a)

synthesis

b)

decomposition

c)

single replacement

d)

double replacement

9.

The type of reaction in which oxygen is a reactant and energy is produced is called ________.

a)

synthesis

b)

decomposition

c)

single replacement

d)

combustion

10.

What type of reaction

is occurring?

Al + 3 Ag(NO3)--> 3 Ag + Al(NO3)3

a)

synthesis

b)

decomposition

c)

single replacement

d)

double replacement

11.

Predict the products of the single replacement reaction:


Ca + Al2O3 -->

a)

Ca + Al2O3

b)

Ca + Al + O2

c)

CaAlO3

d)

Al + CaO

12.

Identify the reactants in this chemical reaction.

Ca + F2--> CaF2

a)

Ca

b)

F2

c)

Ca + F2

d)

CaF2

13.

The type of reaction in which 2 different compounds’ atoms or ions replace each other is called ________.

a)

synthesis

b)

decomposition

c)

single replacement

d)

double replacement

14.

Select the coefficients to balance the following equation.

___Al + ___Ag(NO3) --> __Ag + __Al(NO3)3

a)

3,1,1,3

b)

1,3,3,1

c)

1,2,2,1

d)

2,1,1,2

15.

What type(s) of reaction is occurring?


4 Fe + 3 O2 --> 2 Fe2O3

a)

synthesis

b)

decomposition

c)

single replacement

d)

double replacement

16.

The type of reaction in which 2 or more reactants combine to form ONE product is called ________.

a)

synthesis

b)

decomposition

c)

single replacement

d)

double replacement

17.

What type of reaction is occuring?

FeCl2 + CaBr2 --> CaCl2 + FeBr2

a)

synthesis

b)

decomposition

c)

single replacement

d)

double replacement

18.

The type of reaction in which ONE reactant compound is broken down into smaller substances is called ________.

a)

synthesis

b)

decomposition

c)

single replacement

d)

double replacement

19.

Balance the following equation.

Al + S--> Al2S3

a)

2,2,1

b)

2,4,1

c)

2,3,1

d)

3,1,1

20.
Balance this reaction: ____ NH3 + ____ H2SO4 ---> ____ (NH4)2SO4
a)
2,1,1
b)
2,1,2
c)
1,2,2
d)
2,2,1
21.
Balance this reaction: ____ AlBr3 + ____ K2SO4 ---> ____ KBr + ____ Al2(SO4)3
a)
1,1,1,1
b)
2,3,6,1
c)
2,6,1,1
d)
3,1,2,2
22.
Balance this reaction: ____ NaF + ____ Br2 ---> ____ NaBr + ____ F2
a)
3,1,2,1
b)
1,2,3,4
c)
2,1,2,1
d)
1,2,1,2
23.
Balance this reaction: ____ Na3PO4 + ____ KOH ---> ____ NaOH + ____ K3PO4
a)
1,3,3,1
b)
1,3,2,1
c)
2,3,3,1
d)
1,1,3,1
24.
What coefficients are needed to correctly balance the equation?
_Bi   +   _O2   >   _Bi2O3
a)
3,2,3
b)
2,3,2
c)
4,3,2
d)
none of these
25.
What kind of reaction is this:
2C3H7OH +9O2 -> 6CO2 + 8H2O
a)
Double Replacement
b)
Combustion
c)
Single Replacement
d)
Decomposition
26.
Write a Balanced Equation for this reaction:
C2H4 + 2 O2 -->
a)
C2O2 + H4
b)
CO2 + HOH
c)
CO + H
d)
2 CO2 + 2H2O
27.
Predict the products for the this reaction:
K + HCl --> 
a)
KCl + H2
b)
KHCl 
c)
KH + Cl2
d)
KCl + H
28.
Which of the following equations represents the balanced synthesis reaction of iron (III) and oxygen?
a)
Fe + 3 O2 → Fe2O3
b)
3 Fe + 3 O2 → 2 Fe2O3
c)
2 Fe + O2 → Fe2O3
d)
4 Fe + 3 O2 → 2 Fe2O3
29.
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
30.
If an element is diatomic it should have a subscript of___
a)
2, always
b)
2, only when it is by itself
c)
it shouldn't have a subscript, it should have a coefficent
31.
 Predict the product(s):  H2O -->
a)
H and O
b)
H2 and O2
c)
H and OH
32.

Predict the product of the following synthesis reaction.

Ca + N2 -->

a)

CaN2

b)

CaN

c)

Ca3N2

d)

CaNNot

33.

What is the charge of Iron in this compound. (Hint: think swap drop method):

Fe3(PO4)2

a)

3+

b)

2+

c)

1+

d)

6+

34.

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

Cu+ AgNO3 → Ag + _____

a)

Cu(NO3)2

b)

CuNO3

c)

CuAg

d)

Cu

35.

Predict the products of this synthesis reaction: H2 + Cl2 →

a)

HCl

b)

H2Cl2

c)

H2Cl

d)

HCl2

36.

Predict the products for the this Single Replacement reaction:

K + HCl →

a)

KCl + H2

b)

KHCl

c)

KH + Cl2

d)

HCl + K2

37.

Predict the products for the this Double Replacement reaction:

AgNO3 + KCl →

a)

AgCl + KNO3

b)

AgK + ClNO3

c)

KAg + NO3Cl

d)

AgCl + 3 KNO

38.

Complete the balanced equation for this Double Replacement reaction.

3 NaOH + Fe(NO3)3 →

a)

NaFe + OH(NO3)3

b)

NaNO3 + Fe(OH)3

c)

3 NaNO3 + Fe(OH)3

d)

3 NaFe + 3 (OH)NO3

39.

Predict the products for the decomposition of aluminum oxide, Al2O3 →

a)

Al + O2

b)

O + Al2

c)

Al2 + O3

d)

Al + O

40.
Balance the equation: What is the coefficient on the sodium chloride? 
NaCl + AgNO3 =>  AgCl + NaNO3   
a)
2
b)
3
c)
1
d)
4
41.
Balance the equation: What is the coefficient on the hydrogen gas? 
 H2 + O2 =>    H2O    
a)
2
b)
3
c)
1
d)
4
42.
Balance the equation: What is the coefficient on the potassium iodide? 
 KBr + I2 =>  KI + Br2      
a)
2
b)
3
c)
1
d)
4
43.
Which of the following is a product of the equation:

Cl2  +  KBr  => 
a)
BrCl
b)
K2
c)
KCl
44.

Which of the following is a product of the equation:


AgNO3 + MgCl2 =>

a)

AgMg

b)

NO3Cl2

c)

MgNO3

d)

Mg(NO3)2

45.
Which of the following is a product of the equation:

 CaO  +  S  => 
a)
SO
b)
CaOS
c)
O
d)
O2
46.
Balance the equation. What is the coefficient on the silver nitrate?
  PbSO4 + AgNO3 => Ag2SO4 +  Pb(NO3)2
a)
1
b)
2
c)
3
d)
6
47.
What is the chemical formula for magnesium bromide?
a)
MgBr
b)
Mg2Br
c)
MgBr2
d)
Not enough info
48.
What is the chemical formula for Ammonium Phosphate?
a)
NH4PO4
b)
(NH4)3PO4
c)
NH4(PO4)3
d)
(NH4)2P
49.
What is the chemical formula for Iron (III) Oxide?
a)
FeO
b)
Fe3O
c)
Fe3O2
d)
Fe2O3
50.

What is the correct formula for calcium phosphate?

a)

CaPO4

b)

Ca2(PO4)3

c)

Ca3PO4

d)

Ca3(PO4)2

51.

What is the name of Pb3PO4?

a)

Lead (I) Phosphate

b)

Lead Phosphate

c)

Lead (III) Phosphate

d)

Lead Phosphide

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