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WorksheetsBalancing and Identifying Chemical Equations
Total questions: 60
Worksheet time: 2hrs 9mins
Name
Class
Date
1.
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
2.
Balancing this reaction: ____ CH4 + ____ O2 ---> ____ CO2 + ____ H2O
a)
2,1,3,1
b)
1,2,1,2
c)
1,2,2,1
d)
2,1,1,2
3.
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
4.
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
5.
Balance this reaction: ____ NH3 + ____ H2SO4 ---> ____ (NH4)2SO4
a)
2,1,1
b)
2,1,2
c)
1,2,2
d)
2,2,1
6.
Balance this reaction: ____ GaF3 + ____ Cs ---> ____ CsF + ____ Ga
a)
1,1,3,1
b)
1,2,3,1
c)
2,3,3,1
d)
1,3,3,1
7.
Balance this reaction: ____ BaS + ____ PtF2 ---> ____ BaF2 + ____ PtS
a)
1,1,1,1
b)
1,2,1,1
c)
1,1,1,2
d)
2,1,1,1
8.
Balance this reaction: ____ HCN + ____ CuSO4 ---->____ H2SO4 + ____ Cu(CN)2
a)
2,1,1,2
b)
2,1,1,1
c)
1,2,2,1
d)
1,2,1,1
9.
Balance this reaction: ____ RbNO3 + ____ BeF2 ----> ____ Be(NO3)2 + ____ RbF
a)
1,1,1,1
b)
1,2,1,1
c)
2,1,1,2
d)
2,1,2,1
10.
Balance this reaction: ____ C5H14 + ____ O2 ----> ____ CO2 + ____ H2O
a)
1,8,5,7
b)
2,12,5,14
c)
3,27,15,24
d)
2,17,10,14
11.
__Al + __Fe3N2 -->__AlN + __Fe
a)
already balanced
b)
4,2,4,6
c)
2,1,2,3
d)
1,2,1,3
12.
__Na + __Cl2 --> __NaCl
a)
1,1,2
b)
2,1,2
c)
2,1,1
d)
already balanced
13.
__H2O2 --> __H2O + __O2
a)
already balanced
b)
2,1,1
c)
2,2,1
d)
2,1,2
14.
__C6H12O6 + __O2 --> __H2O + __CO2
a)
1,6,6,6
b)
already balanced
c)
1,6,1,6
d)
2,12,12,12
15.
__H2O + __CO2 --> __C7H8 + __O2
a)
4,7,1,9
b)
4,7,1,7
c)
2,3,1,3
d)
already balanced
16.
__NaClO3 --> __NaCl + __O2
a)
2,2,2
b)
2,2,3
c)
3,2,2
d)
1,2,3
17.
__(NH4)3PO4 + __Pb(NO3)4 --> __Pb3(PO4)4 + __NH4NO3
a)
2,1,1,6
b)
1,2,2,3
c)
4,3,1,12
d)
4,2,1,12
18.
__BF3 + __Li2SO3 --> __B2(SO3)3 + __LiF
a)
2,3,1,3
b)
2,3,1,6
c)
4,4,2,12
d)
3,3,1,9
19.
10. __C7H17 + __O2 --> __CO2 + __H2O
a)
1,2,7,9
b)
2,14,7,17
c)
3,28,14,17
d)
4,45,28,34
20.
_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
21.
_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
22.
_BaS + _PtF2 → _BaF2 + _PtS
a)
1 BaS + 1 PtF2 → 1 BaF2 + 1 PtS
b)
4 BaS + 2 PtF2 → 1 BaF2 + 1 PtS
c)
1 BaS + 2 PtF2→ 2 BaF2 + 2 PtS
d)
1 BaS + 3 PtF2 →1 BaF2 + 2 PtS
23.
_AlBr3 + _K2SO4 → _KBr + _Al2(SO4)3
a)
6 AlBr3 + 1 K2SO4 → 6 KBr + 1 Al2(SO4)3
b)
2 AlBr3 + 3 K2SO4 → 6 KBr + 1 Al2(SO4)3
c)
1 AlBr3 + 1 K2SO4 → 2 KBr + 3 Al2(SO4)3
d)
2 AlBr3 + 3 K2SO4 → 1 KBr + 2 Al2(SO4)3
24.
_SO2 + _Li2Se →_SSe2 + _Li2O
a)
1 SO2 + 2 Li2Se → 1 SSe2 + 2 Li2O
b)
1 SO2 + 1 Li2Se → 2 SSe2 + 2 Li2O
c)
2 SO2 + 2 Li2Se → 2 SSe2 + 2 Li2O
d)
2 SO2 + 2 Li2Se → 1 SSe2 + 1 Li2O
25.
_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
26.
Two Reactants and One Product
a)
Decomposition
b)
Combination
c)
Combustion
d)
Single Replacement
27.
One reactant into several products.
a)
Decomposition
b)
Synthesis
c)
Combustion
d)
Single Replacement
28.
One element replaces another in a compound.
a)
Synthesis
b)
Combustion
c)
Single Replacement
d)
Double Replacement
29.
The following reaction is an example of what reaction type?
CoCO3 → CoO + CO2
CoCO3 → CoO + CO2
a)
Synthesis
b)
Decomposition
c)
Single Replacement
d)
Double Replacement
30.
Si + S8 --> Si2S4
a)
Synthesis (combination)
b)
Decomposition
c)
Single replacement
d)
Double replacement
31.
KOH + H3PO4 --> K3PO4 + H2O
a)
Synthesis (combination)
b)
Decomposition
c)
Single replacement
d)
Double replacement
32.
Pb(NO3)2 --> PbO + NO2 + O2
a)
Synthesis (combination)
b)
Decomposition
c)
Single replacement
d)
Combustion
33.
What are the products in the following chemical equation?
2H2 + O2 --> 2H2O
2H2 + O2 --> 2H2O
a)
H2
b)
O2
c)
2H2 + O2
d)
2H2O
34.
What are always the product(s) for the combustion of a hydrocarbon?
a)
O2
b)
Acids and Bases
c)
H2O and CO2
d)
H2 and C
35.
When balancing equations what does
-->
mean?
-->
mean?
a)
subscript
b)
equals
c)
it is just an arrow
d)
yield
36.
What is the left part of a chemical equation called?
H2 + O → H2O
H2 + O → H2O
a)
Reactants
b)
Products
c)
Yields
d)
Chemical Equation
37.
Ca + AlCl3→ CaCl2 + Al
a)
Synthesis (combination)
b)
Decomposition
c)
Single replacement
d)
Double replacement
38.
Mg + N2 →Mg3N2
a)
Synthesis (combination)
b)
Decomposition
c)
Single replacement
d)
Combustion
39.
A + BC →B + AC
a)
Single Replacement
b)
Decomposition
c)
Double Replacement
d)
Synthesis
40.
Type of Reaction?
____ PbSO4 + ____ AgNO3 =>
____ PbSO4 + ____ AgNO3 =>
a)
Single Replacement
b)
Combustion
c)
Decomposition
d)
Double Replacement
41.
Type of Reaction?
____ O2 + ____ C5H12O2 =>
____ O2 + ____ C5H12O2 =>
a)
Single Replacement
b)
Combustion
c)
Decomposition
d)
Double Replacement
42.
Type of Reaction?
____ HBr + ____ Fe =>
____ HBr + ____ Fe =>
a)
Single Replacement
b)
Combustion
c)
Decomposition
d)
Double Replacement
43.
Type of Reaction?
Mg(OH)2 =>
Mg(OH)2 =>
a)
Single Replacement
b)
Combustion
c)
Decomposition
d)
Double Replacement
44.
Type of Reaction?
Pb(NO3)2 + KOH =>
Pb(NO3)2 + KOH =>
a)
Single Replacement
b)
Combustion
c)
Decomposition
d)
Double Replacement
45.
Which of the following is a product of the equation:
Cl2 + KBr =>
Cl2 + KBr =>
a)
BrCl
b)
K2
c)
KCl
46.
Which of the following is a product of the equation:
AgNO3 + MgCl2 =>
a)
AgMg
b)
NO3Cl2
c)
MgNO3
d)
Mg(NO3)2
47.
Which of the following is a product of the equation:
CaO + S =>
CaO + S =>
a)
SO
b)
CaOS
c)
O
d)
O2
48.
Which of the following is a product of the equation: HINT: Balance the charges in the ionic compounds!
MgSO4 + NaCl =>
MgSO4 + NaCl =>
a)
MgCl2
b)
NaMg
c)
NaSO4
d)
MgCl
49.
Which of the following is a product of the equation: HINT: Balance the charges in the ionic compounds!
K + N2 =>
K + N2 =>
a)
KN
b)
K2N
c)
K3N
d)
KN3
50.
What are the predicted products of this reaction? Copper (II) is the form used in this reaction.
Cu+ AgNO3-->
a)
Cu(NO3)2+Ag
b)
CuNO3 + Ag
c)
CuAg+NO3
d)
Cu+ AgNO3
51.
Predict what kind of reaction will occur.
4Fe + 3O2 →
a)
Synthesis
b)
Decomposition
c)
Single Replacement
d)
Double Replacement
52.
Predict what kind of reaction will occur.
2H2O2 →
a)
Synthesis
b)
Decomposition
c)
Single Replacement
d)
Combustion
53.
Predict the products of the following reaction. No need to balance.
Al + HCl -->
a)
AlCl + H
b)
AlCl3 + H2
c)
HAl + Cl
d)
H3Al + Cl2
54.
Predict the products of the following reaction. No need to balance.
Ca(OH)2 + HNO3 -->
a)
Ca(NO3)2 + H2O
b)
H2Ca + (OH)(NO3)
c)
CaNO3 + H2O
d)
CaH + NO3OH
55.
Predict the products of the following reaction. No need to balance.
F2 + KBr →
a)
FBr + K
b)
KF + Br
c)
KF2 + Br2
d)
KF + Br2
56.
Predict the products of the following reaction. No need to balance.
C2H5OH + O2 -->
a)
CO2 + H2O
b)
C + O2 + H2
c)
C2O4 + H2O
d)
CO + H2 + O2
57.
Write a balanced equation for this DR reactions [Fe has a charge of 3+ and NO3 has a charged of 1-]
NaOH + Fe(NO3)3 -->
a)
NaFe + OH(NO3)3
b)
2NaNO3 + 3Fe(OH)3
c)
NaNO3 + FeOH
d)
3NaNO3 + Fe(OH)3
58.
Predict the products for the this reaction: [Ag has an oxidation number of 1+]
Ag3N + KCl →
a)
AgCl + K3N
b)
AgK + ClN3
c)
AgN3 + KCl
d)
KAg + N3Cl
59.
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
60.
What are the correct formulas and coefficients for the products of the following single-replacement reaction?
Mg + Al(OH)3 →
Mg + Al(OH)3 →
a)
No Reaction
b)
Al + Mg(OH)3
c)
2 Al + 3 Mg(OH)2
d)
3 Al + MgOH3
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