Word Equations
Write the word equations below as chemical equations.
1) Zinc and lead (II) nitrate react to form zinc nitrate and lead.
2) Aluminum bromide and chlorine gas react to form aluminum chloride and
bromine gas.
3) Sodium phosphate and calcium chloride react to form calcium phosphate and
sodium chloride.
In the following reactions, write the chemical equation using (s), (l), (g), (aq) where
appropriate.
4) Potassium metal and chlorine gas combine to form solid potassium chloride.
5. Aluminum metal and hydrochloric acid react to form solid aluminum chloride and
hydrogen gas.
6. Calcium hydroxide pellets and sulfuric acid react to form water and aqueous
calcium sulfate.
7. Copper turnings and sulfuric acid react to form a solution of copper (II) sulfate,
water, and sulfur dioxide gas.
8. Hydrogen gas reacts with nitrogen monoxide gas to form water and nitrogen gas.
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1
EQUATION BALANCING
____F2
+
____H2O 
____ HF
+
____ O2
____C3H8O + ____O2 
____CO2
+
_____H2O
____Fe(OH)2 + ____H3PO4  _____ Fe3(PO4)2 + ______H2O
____Fe2O3
+
____C 
____ Fe
+
____CO2
____Cu(NO3)2 + ____NaOH  ____ Cu(OH)2 +
____NaNO3
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Balancing Chemical Equations
Balance the equations below:
1)
____ N2 + ____ H2 ➜ ____ NH3
2)
____ KClO3 ➜ ____ KCl + ____ O2
3)
____ NaCl + ____ F2 ➜ ____ NaF + ____ Cl2
4)
____ H2 + ____ O2 ➜ ____ H2O
5)
____ Pb(OH)2 + ____ HCl ➜ ____ H2O + ____ PbCl2
6)
____ AlBr3 + ____ K2SO4 ➜ ____ KBr + ____ Al2(SO4)3
7)
____ K + ____ MgBr2 ➜ ____ KBr + ____ Mg
8)
____ C3H8 + ____ O2 ➜ ____ CO2 + ____ H2O
9)
____ H2O + ____ O2 ➜ ____ H2O2
10)
____ FeCl3 + ____ NaOH ➜ ____ Fe(OH)3 + ____NaCl
11)
____ P + ____O2 ➜ ____P2O5
12)
____ Na + ____ H2O ➜ ____ NaOH + ____H2
13)
____ Ag2O ➜ ____ Ag + ____O2
14)
____ S8 + ____O2 ➜ ____ SO3
15)
____ CO2 + ____ H2O ➜ ____ C6H12O6 + ____O2
16)
____ CH4 + ____ O2 ➜ ____ CO2 + ____ H2O
17)
____ HCl + ____ CaCO3 ➜ ____ CaCl2 + ____H2O + ____ CO2
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18)
____ HNO3 + ____ NaHCO3 ➜ ____ NaNO3 + ____ H2O + ____ CO2
19)
____ C8H18 + ____ O2 ➜ ____ CO2 + ____ H2O
20)
____ NaBr + ____ CaF2 ➜ ____ NaF + ____ CaBr2
21)
____ H2SO4 + ____ NaNO2 ➜ ____ HNO2 + ____ Na2SO4
22)
____ C6H6 + ____ O2 ➜ ____ H2O + ____ CO2
23)
____ NaI + ____ Pb(SO4)2 ➜ ____ PbI4 + ____ Na2SO4
24)
____ NH3 + ____ O2 ➜ ____ NO + ____ H2O2
25)
____ Fe(OH)3 ➜ ____ Fe2O3 + ____ H2O
26)
____ HNO3 + ____ Mg(OH)2 ➜ ____ H2O + ____ Mg(NO3)2
27)
____ H3PO4 + ____ NaBr ➜ ____ HBr + ____ Na3PO4
28)
____ C + ____ H2 ➜ ____ C3H8
29)
____ CaO + ____ MnI4 ➜ ____ MnO2 + ____ CaI2
30)
____ Fe2O3 + ____ H2O ➜ ____ Fe(OH)3
31)
____ C2H2 + ____ H2 ➜ ____ C2H6
32)
____ VF5 + ____ HI ➜ ____ V2I10 + ____ HF
33)
____ OsO4 + ____ PtCl4 ➜ ____ PtO2 + ____ OsCl8
34)
____ CF4 + ____ Br2 ➜ ____ CBr4 + ____ F2
35)
____ Hg2I2 + ____ O2 ➜ ____ Hg2O + ____ I2
36)
____ Y(NO3)2 + ____ GaPO4 ➜ ____ YPO4 + ____ Ga(NO3)2
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Six Types of Chemical Reactions
Indicate which of the six types of chemical reaction are being represented:
Ca(OH)2 ➜
1.
NaBr +
2.
NH3 +
3.
C5H9O +
4.
Pb +
5a.
C12H22O11 ➜
6.
HBr +
H2SO4 ➜
O2 ➜
H3PO4 ➜
C+
Al(OH)3 ➜
CaBr2 +
(NH4)2SO4
CO2 +
H2 +
Type: _________________________
Type: _________________________
H2O
Pb3(PO4)2
H2O
H2O +
NaOH
Type:__________________________
Type:__________________________
Type:_________________________
AlBr3
Type:__________________________
Special decomposition rules:
1. Mg(OH)2 ➜
2. SrCO3 ➜
3. Cu(OH)2 ➜
4. Pb(CO3)2 ➜
5. Mn(OH)3 ➜
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Identify the Type of Reaction
For the following reactions, indicate whether the following are examples of
synthesis, decomposition, combustion, single replacement, double replacement, or
acid-base reactions:
1) Na3PO4 + 3 KOH ➜ 3 NaOH + K3PO4
_________________________
2) MgCl2 + Li2CO3 ➜ MgCO3 + 2 LiCl _________________________
3) C6H12 + 9 O2 ➜ 6CO2 + 6H2O _________________________
4) Pb + FeSO4 ➜ PbSO4 + Fe _________________________
5) CaCO3 ➜ CaO + CO2
_________________________
6) P4 + 3 O2 ➜ 2 P2O3
_________________________
7) 2 RbNO3 + BeF2 ➜ Be(NO3)2 + 2 RbF ________________________
8) 2 AgNO3 + Cu ➜ Cu(NO3)2 + 2 Ag ________________________
9) C3H6O + 4 O2 ➜ 3 CO2 + 3 H2O _________________________
10) 2 C5H5 + Fe ➜ Fe(C5H5)2
11) SeCl6 + O2 ➜ SeO2 + 3 Cl2
_________________________
_________________________
12) 2 MgI2 + Mn(SO3)2 ➜ 2 MgSO3 + MnI4
13) O3
_________________________
➜ O- + O2 _________________________
14) 2 NO2 ➜ 2 O2 + N2 _________________________
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Predicting Reaction Products
Predict the products of the following reactions (balance later):
1) __ Ag + __CuSO4 ➜
Type:___________________________
2) __ NaI + __ CaCl2 ➜
Type:___________________________
3) __ O2 + __ H2 ➜
Type:___________________________
4) __ HNO3 + __ Mn(OH)2 ➜
Type:___________________________
5) __ AgNO2 + __ BaSO4 ➜
Type:___________________________
6) __ HCN + __ CuSO4 ➜
Type:___________________________
7) __ H2O + __ AgI ➜
Type:___________________________
8) __ HNO3 + __Fe(OH)3 ➜
Type:___________________________
9) __ LiBr + __ Co(SO3)2 ➜
Type:___________________________
10) __ LiNO3 + __Ag ➜
Type:___________________________
11) __ N2 + __ O2 ➜
Type:___________________________
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12) __ H2CO3 ➜
Type:___________________________
13) __ AlCl3 + __ Cs ➜
Type:___________________________
14) __ Al(NO3)3 + __ Ga ➜
Type:___________________________
15) __ H2SO4 + __ NH4OH ➜
Type:___________________________
16) __ CH3COOH + __ O2 ➜
Type:___________________________
17) __ C4H8 + __ O2 ➜
Type:___________________________
18) __ KCl + __ Mg(OH)2 ➜
Type:___________________________
19) __ Zn + __ Au(NO2)2 ➜
Type:___________________________
20) __ KOH + __ H2SO4 ➜
Type:___________________________
21) __ BaS + __ PtCl2 ➜
Type:___________________________
22) __ Na2O ➜
Type:___________________________
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Predicting Reaction Products and Precipitates
Using a Solubility Chart
For each of the following reactions, determine what the products of the reaction are. Use a
solubility chart to determine which products would precipitate out of solution (if any) and place
the correct symbol after the products (s, l, g, aq,). Balance only if instructed to. Assume all
reactions take place in water.
1) ____ Ca(OH)2 + ____ HF ➜
2) ____Pb(NO3)2 + ____K2CrO4 ➜
3) ____NaC2H3O2 + ____H2SO4 ➜
4) ____Cu(OH)2 + ____H3PO4 ➜
5) ____AgNO3 + ____ Na2CO3 ➜
6) ____Zn + ____H2CO3 ➜
7) ____Pb(OH)2 + ____Hg2S ➜
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THE ACTIVITY SERIES OF THE ELEMENTS
Use the activity series to predict if a reaction will occur. If a reaction happens,
write the products; if there is no reaction, write ‘NR’.
o
1.
50 C
Zn(s)  H2O(l) 
 __________________
2.
Sn(s)  O2(g)  ________________________
3.
Pb(NO3 )2(aq)  Cd(s)  __________________
4.
Cu(s)  HCl(aq)  ______________________
5.
H3PO4  Cd(s)  ______________________
6.
Pt(s)  O2(g)  ________________________
7.
H2O(l)  Cr  ________________________
o
8.
9.
110 C
Mg(s)  H2O(g) 
 __________________
Ni(s)  Pb(MnO4 )2(aq)  __________________
10.
Br2  KI  __________________________
11.
Co(s)  MgSO3(aq)  _____________________
12.
O2(g)  Cd(s)  _______________________
13.
I2(s)  NaF(aq)  _______________________
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