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WorksheetsBalancing Reactions
Total questions: 53
Worksheet time: 4hrs 25mins
Name
Class
Date
1.
Is this equation balanced?
a)
yes
b)
no
c)
Not enough information
2.
Is this equation balanced?
a)
yes
b)
no
c)
Not enough information
3.
Is this equation balanced?
a)
yes
b)
no
c)
Not enough information
4.
Is this equation balanced?
a)
yes
b)
no
c)
Not enough information
5.
How many hydrogen atoms are reacting?
a)
2
b)
4
c)
8
d)
1
6.
How many oxygen atoms are produced?
a)
2
b)
4
c)
8
d)
1
7.
How many oxygen molecules are produced?
a)
2
b)
4
c)
8
d)
1
8.
How many water molecules are produced?
a)
2
b)
4
c)
8
d)
1
9.
How many H2O2 molecules are reacting?
a)
2
b)
4
c)
8
d)
1
10.
_Na3PO4+_KOH
--->
_NaOH + _ K3PO4
--->
_NaOH + _ K3PO4
a)
1 Na3PO4+3 KOH
--->
3 NaOH + 1 K3PO4
--->
3 NaOH + 1 K3PO4
b)
2 Na3PO4+2 KOH
--->
3 NaOH + 1 K3PO4
--->
3 NaOH + 1 K3PO4
c)
1 Na3PO4+2 KOH
--->
2 NaOH + 1 K3PO4
--->
2 NaOH + 1 K3PO4
d)
3 Na3PO4+3 KOH
--->
3 NaOH + 1 K3PO4
--->
3 NaOH + 1 K3PO4
11.
_P4+_O2
--->
_P2O3
--->
_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
12.
_AgNO3 + _Cu
--->
_Cu(NO3)2 + _Ag
--->
_Cu(NO3)2 + _Ag
a)
2 AgNO3 + 2 Cu
--->
3 Cu(NO3)2 + 1 Ag
--->
3 Cu(NO3)2 + 1 Ag
b)
2 AgNO3 + 1 Cu
--->
1 Cu(NO3)2 + 2 Ag
--->
1 Cu(NO3)2 + 2 Ag
c)
1 AgNO3 + 2 Cu
--->
2 Cu(NO3)2 + 1 Ag
--->
2 Cu(NO3)2 + 1 Ag
d)
3 AgNO3 + 2 Cu
--->
3 Cu(NO3)2 + 2 Ag
--->
3 Cu(NO3)2 + 2 Ag
13.
_HCN + _ CuSO4
--->
_H2SO4 + _Cu(CN)2
--->
_H2SO4 + _Cu(CN)2
a)
2 HCN + 1 CuSO4
--->
1 H2SO4 + 1 Cu(CN)2
--->
1 H2SO4 + 1 Cu(CN)2
b)
1 HCN + 7 CuSO4
--->
3 H2SO4 + 8 Cu(CN)2
--->
3 H2SO4 + 8 Cu(CN)2
c)
1 HCN + 2 CuSO4
--->
1 H2SO4 + 2 Cu(CN)2
--->
1 H2SO4 + 2 Cu(CN)2
d)
1 HCN + 1 CuSO4
--->
2 H2SO4 + 1 Cu(CN)2
--->
2 H2SO4 + 1 Cu(CN)2
14.
_BaS + _PtF2
--->
_BaF2 + _PtS
--->
_BaF2 + _PtS
a)
1 BaS + 1 PtF2
--->
1 BaF2 + 1 PtS
--->
1 BaF2 + 1 PtS
b)
4 BaS + 2 PtF2
--->
1 BaF2 + 1 PtS
--->
1 BaF2 + 1 PtS
c)
1 BaS + 2 PtF2
--->
2 BaF2 + 2 PtS
--->
2 BaF2 + 2 PtS
d)
1 BaS + 3 PtF2
--->
1 BaF2 + 2 PtS
--->
1 BaF2 + 2 PtS
15.
_NaF + _Br2
--->
_NaBr + _F2
--->
_NaBr + _F2
a)
1NaF + 2 Br2
--->
1 NaBr + 2 F2
--->
1 NaBr + 2 F2
b)
2NaF + 2 Br2
--->
2 NaBr + 2 F2
--->
2 NaBr + 2 F2
c)
2 NaF + 3 Br2
--->
1 NaBr + 2 F2
--->
1 NaBr + 2 F2
d)
2 NaF + 1 Br2
--->
2 NaBr + 1 F2
--->
2 NaBr + 1 F2
16.
_AlBr3 + _K2SO4
--->
_KBr + _Al2(SO4)3
--->
_KBr + _Al2(SO4)3
a)
6 AlBr3 + 1 K2SO4
--->
6 KBr + 1 Al2(SO4)3
--->
6 KBr + 1 Al2(SO4)3
b)
2 AlBr3 + 3 K2SO4
--->
6 KBr + 1 Al2(SO4)3
--->
6 KBr + 1 Al2(SO4)3
c)
1 AlBr3 + 1 K2SO4
--->
2 KBr + 3 Al2(SO4)3
--->
2 KBr + 3 Al2(SO4)3
d)
2 AlBr3 + 3 K2SO4
--->
1 KBr + 2 Al2(SO4)3
--->
1 KBr + 2 Al2(SO4)3
17.
_Na3PO4 + _CaCl2
--->
_NaCl + _Ca3(PO4)2
--->
_NaCl + _Ca3(PO4)2
a)
6 Na3PO4 + 1 CaCl2
--->
6 NaCl + 1 Ca3(PO4)2
--->
6 NaCl + 1 Ca3(PO4)2
b)
2 Na3PO4 + 3 CaCl2
--->
6 NaCl + 1 Ca3(PO4)2
--->
6 NaCl + 1 Ca3(PO4)2
c)
1 Na3PO4 + 1 CaCl2
--->
2 NaCl + 3 Ca3(PO4)2
--->
2 NaCl + 3 Ca3(PO4)2
d)
2 Na3PO4 + 3 CaCl2
--->
1 NaCl + 2 Ca3(PO4)2
--->
1 NaCl + 2 Ca3(PO4)2
18.
_Al + _HCl
--->
_H2 + _AlCl3
--->
_H2 + _AlCl3
a)
2 Al + 2 HCl
--->
2 H2 + 6 AlCl3
--->
2 H2 + 6 AlCl3
b)
3 Al + 3 HCl
--->
6 H2 + 2 AlCl3
--->
6 H2 + 2 AlCl3
c)
1 Al + 1 HCl
--->
3 H2 + 1 AlCl3
--->
3 H2 + 1 AlCl3
d)
2 Al + 6 HCl
--->
3 H2 + 2 AlCl3
--->
3 H2 + 2 AlCl3
19.
_SO2 + _Li2Se
--->
_SSe2 + _Li2O
--->
_SSe2 + _Li2O
a)
1 SO2 + 2 Li2Se
--->
1 SSe2 + 2 Li2O
--->
1 SSe2 + 2 Li2O
b)
1 SO2 + 1 Li2Se
--->
2 SSe2 + 2 Li2O
--->
2 SSe2 + 2 Li2O
c)
2 SO2 + 2 Li2Se
--->
2 SSe2 + 2 Li2O
--->
2 SSe2 + 2 Li2O
d)
2 SO2 + 2 Li2Se
--->
1 SSe2 + 1 Li2O
--->
1 SSe2 + 1 Li2O
20.
_N2 + _F2
--->
_NF3
--->
_NF3
a)
1 N2 + 3 F2
--->
2 NF3
--->
2 NF3
b)
3 N2 + 2 F2
--->
1 NF3
--->
1 NF3
c)
4 N2 + 2 F2
--->
0 NF3
--->
0 NF3
d)
3 N2 + 4 F2
--->
5 NF3
--->
5 NF3
21.
_CH4 + _O2
--->
_CO2 + _H2O
--->
_CO2 + _H2O
a)
6 CH4 + 9 O2
--->
6 CO2 + 9 H2O
--->
6 CO2 + 9 H2O
b)
2 CH4 + 1 O2
--->
2 CO2 + 1 H2O
--->
2 CO2 + 1 H2O
c)
3 CH4 + 2 O2
--->
2 CO2 + 3 H2O
--->
2 CO2 + 3 H2O
d)
1 CH4 + 2 O2
--->
1 CO2 + 2 H2O
--->
1 CO2 + 2 H2O
22.
_NH3 + _H2SO4
--->
_(NH4)2SO4
--->
_(NH4)2SO4
a)
2 NH3 + 1 H2SO4
--->
1 (NH4)2SO4
--->
1 (NH4)2SO4
b)
2 NH3 + 1 H2SO4
--->
2 (NH4)2SO4
--->
2 (NH4)2SO4
c)
1 NH3 + 1 H2SO4
--->
2 (NH4)2SO4
--->
2 (NH4)2SO4
d)
2 NH3 + 2 H2SO4
--->
2 (NH4)2SO4
--->
2 (NH4)2SO4
23.
_MgF2 + _Li2CO3
--->
_MgCO3 + _LiF
--->
_MgCO3 + _LiF
a)
1 MgF2 + 2 Li2CO3
--->
3 MgCO3 + 6 LiF
--->
3 MgCO3 + 6 LiF
b)
6 MgF2 + 9 Li2CO3
--->
6 MgCO3 + 9 LiF
--->
6 MgCO3 + 9 LiF
c)
2 MgF2 + 2 Li2CO3
--->
2 MgCO3 + 1 LiF
--->
2 MgCO3 + 1 LiF
d)
1 MgF2 + 1 Li2CO3
--->
1 MgCO3 + 2 LiF
--->
1 MgCO3 + 2 LiF
24.
_K + _Cl2
--->
_KCl
--->
_KCl
a)
2 K + 16 Cl2
--->
8 KCl
--->
8 KCl
b)
2 K + 1 Cl2
--->
2 KCl
--->
2 KCl
c)
3 K + 4 Cl2
--->
3 KCl
--->
3 KCl
d)
1 K + 1 Cl2
--->
1 KCl
--->
1 KCl
25.
Balance the following reaction: H2O ---> H2 + 02.
a)
1,1,1
b)
1,2,1
c)
2,2,1
d)
1,2,2
26.
In the equation, 2Mg + O2 ---> 2MgO, which are the reactants?
a)
Mg and O
b)
MgO
c)
Mg and MgO
d)
O and MgO
27.
Balance this equation, Al2O3 ---> Al + O2
a)
Cannot be balanced
b)
2Al2O3 ---> 2Al + 3O2
c)
2Al2O3 ---> 4Al + 3O2
d)
3Al2O3 ---> 2Al + O2
28.
Name this reaction, CO2 + H2O --> H2CO3
a)
Decomposition
b)
Single Replacement
c)
Synthesis
d)
Combustion
29.
Balance this equation: H2 + N2 → NH3
a)
H2 + 4N2 → NH3
b)
H2 + 3N2 → 2NH3
c)
3H2 + N2 → 2NH3
d)
2H2 + 2N2 → 2NH3
30.
Which is a Synthesis Reaction?
a)
A + B ----> AB
b)
AB -----> A + B
c)
AB + CD ----> AC +BC
d)
AB+ C ----> AC + B
31.
Which is a Decomposition Reaction?
a)
AB --> A + B
b)
ab ----> a + B
c)
AB + CD ----> AC +BC
d)
AB+ C ----> AC + B
32.
Balance this equation: H2 + N2 → NH3
a)
H2 + 4N2 → NH3
b)
H2 + 3N2 → 2NH3
c)
3H2 + N2 → 2NH3
d)
2H2 + 2N2 → 2NH3
33.
This image represents
a)
a double replacement reaction
b)
a decomposition reaction
c)
a single replacement reaction
d)
a complex compound reaction
34.
What coefficients are needed to correctly balance the equation?
_Bi + _O2 > _Bi2O3
_Bi + _O2 > _Bi2O3
a)
3,2,3
b)
2,3,2
c)
4,3,2
d)
none of these
35.
How many elements are in C6H12O6?
a)
1
b)
3
c)
12
d)
24
36.
How many atoms are in C6H12O6?
a)
1
b)
3
c)
12
d)
24
37.
How many Al atoms are represented? 4Al2O3
a)
2
b)
8
c)
5
d)
20
38.
How many total atoms are represented? 4Al2O3
a)
2
b)
8
c)
5
d)
20
39.
How many oxygen atoms are represented? 4Al2O3
a)
2
b)
8
c)
12
d)
20
40.
Which is the correct chemical formula for methane?
a)
(CH)4
b)
C4H4
c)
CH4
d)
C4H
41.
a copper penny turning greenish after a few years.
a)
Chemical Change
b)
Physical Change
42.
An gel ice pack getting cold after you put it in the freezer for an hour.
a)
Chemical Change
b)
Physical Change
43.
Substances that enter into a chemical reaction (found to the left side of the arrow)
a)
product
b)
reactant
c)
chemical
d)
balanced equation
44.
The large number in front of a chemical formula or compound is the ___________.
a)
coefficient
b)
product
c)
physical
d)
chemical
45.
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
46.
This is an example of a
a)
mixture of two compounds
b)
pure substance
c)
mixture of two elements
d)
mixture of element and compound
47.
NaBr + H3PO4 --> Na3PO4 + HBr
a)
synthesis
b)
decomposition
c)
single replacement
d)
double replacement
48.
Ca(OH)2 + Al2(SO4)3 --> CaSO4 + Al(OH)3
a)
synthesis
b)
combustion
c)
double replacement
d)
single replacement
49.
2Mg + Fe2O3 --> 2Fe + 3MgO
a)
synthesis
b)
combustion
c)
decomposition
d)
single replacement
50.
PbSO4 --> PbSO3 + O2
a)
synthesis
b)
decomposition
c)
double replacement
d)
single replacement
51.
NH3 + I2 --> N2I6 + H2
a)
decomposition
b)
combustion
c)
single replacement
d)
double replacement
52.
H2O + SO3 --> H2SO4
a)
synthesis
b)
combustion
c)
double replacement
d)
decomposition
53.
H2SO4 + NH4OH --> H2O + (NH4)2SO4
a)
synthesis
b)
comubstion
c)
single replacement
d)
double replacement
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