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Unit 3 Part 1 Review

Total questions: 50

Worksheet time: 13hrs 30mins

Name
Class
Date
1.

Is a change in matter that produces one or more new substances

a)

precipitate

b)

endothermic reaction

c)

chemical reaction

d)

activation energy

2.

A solid that forms from a solution during a chemical reaction

a)

precipitate

b)

concentration

c)

chemical reaction

d)

inhibitor

3.

A reaction that absorbs energy in the form of heat

a)

catalyst

b)

endothermic reaction

c)

enzyme

d)

precipitate

4.

A reaction that releases energy in the form of heat

a)

activation energy

b)

concentration

c)

exothermic reaction

d)

catalyst

5.

The total mass of the reactants must equal the total mass of products. Matter is never created or destroyed

a)

Conservation of Mass

b)

Pascal's Principle

c)

catalyst

d)

inhibitor

6.

Reactions that have hydrocarbons (CH4) and oxygen as reactants and carbon dioxide and water as products

a)

Conservation of Mass

b)

combustion

c)

double replacement

d)

decomposition

7.

When two or more substances combine to form a more complex substance

a)

compound

b)

double replacement

c)

synthesis

d)

catalyst

8.

Starts with two compounds as reactants, that recombine to form two new compounds as products

a)

compound

b)

catalyst

c)

combustion

d)

double replacement

9.

One compound and a free element that recombine to yield a new compound and a new free element

a)

combustion

b)

synthesis

c)

decomposition

d)

single replacement

10.

Which type of chemical reaction is this:

FeCl2 + K2S --------- FeS + 2KCl

a)

synthesis

b)

double replacement

c)

combustion

d)

single replacement

11.

Which type of chemical reaction is this:

C2H4 + 3O2 -------- 2CO2 + 2H2O

a)

double replacement

b)

decomposition

c)

combustion

d)

synthesis

12.

Which type of chemical reaction is this:

3Fe + 4H2O -------- Fe3O4 + 4H2

a)

synthesis

b)

single replacement

c)

decomposition

d)

double replacement

13.
_P4+_O2 →  _P2O3
a)
3 P4+1 O2 → 2 P2O3
b)
1 P4+1 O2 → 2 P2O3
c)
1 P4+ 3 O2 → 2 P2O3
d)
1 P4+ 2 O2 → 3 P2O3
14.
_AgNO3 + _Cu →_Cu(NO3)2 + _Ag
a)
2 AgNO3 + 2 Cu → 3 Cu(NO3)2 + 1 Ag
b)
2 AgNO3 + 1 Cu → 1 Cu(NO3)2 + 2 Ag
c)
1 AgNO3 + 2 Cu → 2 Cu(NO3)2 + 1 Ag
d)
3 AgNO3 + 2 Cu → 3 Cu(NO3)2 + 2 Ag
15.
_Al + _HCl →_H2 + _AlCl3
a)
2 Al + 2 HCl → 2 H2 + 6 AlCl3
b)
3 Al + 3 HCl → 6 H2 + 2 AlCl3
c)
1 Al + 1 HCl → 3 H2 + 1 AlCl3
d)
2 Al + 6 HCl → 3 H2 + 2 AlCl3
16.
_K + _Cl2 →_KCl
a)
2 K + 16 Cl2 → 8 KCl
b)
2 K + 1 Cl2 → 2 KCl
c)
3 K + 4 Cl2 → 3 KCl
d)
1 K + 1 Cl2 →1 KCl
17.
Balance this equation:  H2 + N2 → NH3
a)
 H2 + 4N2 → NH3
b)
 H2 + 3N2 → 2NH3
c)
 3H2 + N2 → 2NH3
d)
 2H2 + 2N2 → 2NH3
18.
Substances that enter into a chemical reaction (found to the left side of the arrow) 
a)
product
b)
reactant
c)
chemical
d)
balanced equation
19.
The large number in front of a chemical formula or compound is the ___________. 
a)
coefficient
b)
product
c)
physical
d)
chemical
20.
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
21.
___________________ are the elements or compounds that are formed in a chemical
reaction.
a)
Polymers
b)
Bonds
c)
Reactants
d)
Products
22.
Based on the activity series, will this reaction occur?
Ni (s) + H2O (l) →
a)
Yes
b)
No
23.
Based on the activity series, will this reaction occur?
Br2 (l) + KI (aq) →
a)
Yes
b)
No
24.
Based on the activity series, will this reaction occur?
Au (s) + HCl (l) →
a)
Yes
b)
No
25.

Predict the product(s) of this reaction (don't worry about balancing):

Li + H2O →

a)

Li2O + H2

b)

LiO + H2

c)

LiOH + H2

d)

Li(OH)2

26.

Predict the product(s) of this reaction (don't worry about balancing):

Mg + HCl →

a)

MgHCl

b)

MgCl2 + H2

c)

MgCl2 + H

d)

MgCl + H2

27.

Predict the product(s) of this reaction (don't worry about balancing):

SrI2 +Br2→

a)

Sr + I2Br2

b)

SrBr + I2

c)

SrBr2 + I2

d)

Sr + IBr2

28.
Predict the product(s) of this reaction (don't worry about balancing):
C12H22O11 + O2 →
a)
CO + HO
b)
CO2
c)
CO2 + H2O
d)
H2O
29.
Predict the product(s) of this reaction (Don't worry about balancing) 
Pb(NO3)2  +  KI →
a)
PbK +  I NO3
b)
not possible
c)
PbI2  +  KNO3
d)
PbI  + KNO3
30.

Based on the activity series, which metal could X represent in the reaction below?

X + Ca (NO3)2 --> Ca + X (NO3)2

a)

Ba

b)

Fe

c)

Mg

d)

Zn

31.

Which metal is more reactive than calcium?

a)

magnesium

b)

potassium

c)

silver

d)

aluminum

32.
What  will be the result of the following: 
Br2 + NaF ->
a)
bromine will replace Na
b)
Na will replace Br
c)
Br will replace F
d)
no reaction will occur
33.
What  will be the result of the following: 
Li + NaF ->
a)
Li will replace F
b)
Na will replace Li
c)
Li will replace Na
d)
no reaction will occur
34.
What will be the result of :  Zn + AuCl2->
a)
ZnCl2 +Au
b)
ZnAu + Cl2
c)
no reaction
d)
ClAu + Zn
35.
Will silver react with magnesium chloride solution?
a)
yes
b)
no
36.
State whether the following compound is soluble or insoluble. Zinc hydroxide Zn(OH)2
a)
Soluble 
b)
Insoluble
37.
State whether the following compound is soluble or insoluble. iron(ii) sulfide FeS
a)
soluble
b)
insoluble
38.
State whether the following compound is soluble or insoluble. Silver iodide AgI
a)
Soluble 
b)
Insoluble 
39.
State whether the following compound is soluble or insoluble.Potassium hydroxide KOH
a)
Soluble 
b)
Insoluble
40.
State whether the following compound is soluble or insoluble.Silver acetate AgC2H3O2
a)
Soluble 
b)
Insoluble
41.
State whether the following compound is soluble or insoluble.nickel chloride NiCl2
a)
Soluble 
b)
Insoluble
42.
State whether the following compound is soluble or insoluble.Lead iodide PbI2
a)
Soluble
b)
Insoluble
43.
State whether the following compound is soluble or insoluble.Ammonium nitrate NH4NO3
a)
soluble
b)
insoluble
44.
N2 + 3H2 --> 2NH3
What is the total number of moles of NH3 produced when 10 moles of H2 reacts completely with N2?
a)
6.7
b)
2.0
c)
3.0
d)
15.0
45.
2Na + S -->Na2S
What is the total number of moles of S that reacts when 4.0 moles of Na were completely consumed?
a)
1
b)
2
c)
0.5
d)
4
46.
2Na + S -->Na2S
What is the total number of moles of Na2S produced when 8.0 moles of Na were completely consumed?
a)
1
b)
2
c)
0.5
d)
4
47.
4NH3 + 5O2-->4NO + 6H2O
What is the total number of moles of NO produced when 1 mole of O2 is completely consumed?
a)
1
b)
1.2
c)
0.8
d)
4
48.
4NH3 + 5O2-->4NO + 6H2O
What is the total number of moles of H2O produced when 12 mole of NH3 is completely consumed?
a)
15
b)
18
c)
20
d)
24
49.
6CO2 + 6H2O --> C6H12O6 + 6O2 
What is the total number of moles of water needed to make 2.5 moles of C6H12O6?
a)
2.5
b)
6
c)
12
d)
15
50.
6CO2 + 6H2O --> C6H12O6 + 6O2 
What is the total number of moles of CO2 needed to make 2 moles of C6H12O6?
a)
2.5
b)
6
c)
12
d)
15

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