Worksheet to teach balancing equations
Name __________________
Directions:
1. Start Internet Explorer or Netscape and go to
http://funbasedlearning.com/chemistry/chemBalancer/default.htm
2. Click ‘Directions’. Read and understand the directions.
3. Click ‘OK’.
4. Click on ‘Start Game’
5. Try entering some numbers in the text boxes in front of each molecule. What happens?
6. If you forget the directions, click on the ‘How to Play the Game’ link. Click ‘OK’ when you finish reading
them to return to the game.
7. When you think you have typed the right numbers in all the boxes, click the ‘Balanced’ button.
8. If you didn’t get it right, try again.
9. If you did get it right, then fill in the correct answers on this worksheet for #1.
10. Repeat steps 7-9 for the other 10 questions.
11. Now do the two problems on the back of this worksheet. You can draw the molecules just like the program
did to figure out the answer.
Questions
Fill in the blanks below as you go though the game. This is so I have a record that you did your assignment.
1. __1___ Fe + __1___ S  __1___ FeS
2. __1___ H2 + __1___ Cl2  __2___ HCl
3. __2___ Mg + __1___ O2  __2___ MgO
4. __1___ O2 + __2___ H2  __2___ H2O
5. __2___ HgO  __2___ Hg + __1___ O2
6. __1___ Ca + __2___ H2O  __1__ Ca(OH)2 + __1__ H2
7. __1___ CH4 + __2___ O2  ___1__ CO2 + __2___ H2O
8. __1___ Na2O2 + __1___ H2SO4  ___1__ Na2SO4 + __1___ H2O2
9. __1___ N2 + ___3__ H2  ___2__ NH3
10. __4___ Al + __3___ O2  __2___ Al2O3
11. __4___ KMnO4  __2___ K2O + __4___ MnO + __5___ O2
Name: ___Answer Key____
8th
Date: ___________________
Balancing Equations Worksheet I
Balance the following chemical equations
1.
2 K
+ 2 H2O
2.
3 MnO2
+
3.
2 Al2O3

4.
3 H2
5.
4 Fe +
6.
2P
+

4 Al
4 Al
3 O2
+

H2
3 Mn
+
+
3 O2
2 PH3
2 Fe2O3
+ 3 Cl2
2 PCl3
7.
2 Al + Fe2O3

8.
2 Mg
O2
9.
N2
+
KOH

P2
+
2
3 H2
2 Fe
+

Al2O3
2 MgO

2 NH3
2
Al2O3
Worksheet I p. 2
10.
2 AgCl
11.
SO2
12.
2 NO2
13.
14.
15.
16.
2

2 Ag
+

H2O

Fe
+
FeS
CuSO4
3 Ca(OH)2 +
2 H3PO4
Cl2
H2SO3
2 NO
Na + 2 H2O
2 HCl +
+
+
2 NaOH
FeCl2
O2
+
H2
+
H2S
FeSO4
+
Ca3(PO4)2
Cu
+ 6 H2O
Name: ___Answer Key________________
8-____
1.
2 NaOH
2.
2 NaCl
3.
CuO
4.
+
+
CaC2
5.
3 Ca(OH)2
6.
SrCO3

H2SO4

Ca(NO3)2
+
H2SO4
+
Date: ____________________
Balancing Equations Worksheet II

2 H2O
+
Na2SO4
+ 2 NH4Br
H3PO4
+
CaCl2
CuSO4
+
H2O
+
Ca(OH)2
Ca3(PO4)2

2 H2O
2 NaNO3
C2H2
2
+
SrBr2
+
+
6 H2O
(NH4)2CO3
Worksheet II page 2
7.
C7H16
+
8.
2 C4H10
+
11
O2
7
13 O2
CO2
8 CO2
+
8 H2O
+ 10
H2O
9. Hydrogen plus oxygen yields water
2 H2
+ O2 
2 H2O
10. Sodium plus water yields sodium hydroxide plus hydrogen
2 Na + 2 H2O

2 Na(OH)
+
H2
11. Hydrochloric Acid plus Iron Sulfide yields Iron Chloride plus Hydrogen Sulfide
6 HCl
+ Fe2S3

2 FeCl3 +
3 H2S
12. Aluminum Sulfate plus Calcium Hydroxide yields Aluminum Hydroxide plus Calcium Sulfate
Al2(SO4)3
+ 3 Ca(OH)2

2 Al(OH)3
+ 3 CaSO4
Name: ___Answer Key_________
8 - _____
Date: __________________
Type of Equations
Determine the reaction type for each of the following equations:
synthesis
decomposition
single replacement
1. _ synthesis _
4Fe + 3O2
2Fe2O3
2. _ decomposition _
2NaCl
3. _ synthesis _
N2 + 3H2
4. _ double replacement _
HCl + FeS
5. _ single replacement _
Fe + CuSO4
6. _ double replacement _
HCl + AgNO3
HNO3 + AgCl
7. _ synthesis _
P4O10 + 6H2O
4H3PO4
8. _ single replacement _
3Fe + 4H2O
9. _ decomposition _
2H3PO4
10. _ single replacement _
Fe2O3 + 3C
11. _ single replacement _
C10H16 + 8Cl2
12. _ single replacement _
AgNO3 + Cu
2Na + Cl2
2NH3
FeCl2 + H2S
FeSO4 + Cu
Fe3O4 + 4H2
H4P2O7 + H2O
3CO + 2Fe
10C + 16HCl
CuNO3 + Ag
double replacement
Name: ___Answer Key_________
8 - _____
1.
2 NaCl
2.
N2
3.
2 P
Date: __________________
Balancing Equations Worksheet III
2 Na + Cl2
+
3 H2
2 NH3
+ 3 Cl2
2 PCl3
use covalent bonding
4.
HCl
+
AgNO3
HNO3 + AgCl
5.
2 Al
+
3 Ca(OH)2
2 Al(OH)3
6.
2 AgNO3
7.
2 K
+
+
Cu
Br2
+
3 Ca
Cu(NO3)2 + 2 Ag
2 KBr
Worksheet III p.2
8.
9.
2 Al
+
4 Al
10.
FeCl3
11.
2 Au2O3
+
Fe2O3
Al2O3
3
2 Al2O3
+
O2
3 NH4OH
4 Au
+ 3 O2
12. Magnesium plus oxygen yields
2 Mg + O2  2 MgO
13. Zinc + Oxygen
2 Zn

+ O2  2 ZnO
14. Hydrogen Sulfide


H2
H2S
+ S
+2Fe
Fe(OH)3
+ 3 NH4Cl
Worksheet III p. 3
15. Potassium Chloride 
2 KCl 
2 K + Cl2
16. Silver plus Copper nitrate yields
 no reaction. Silver is not stronger than Copper.
Ag + Cu(NO3)2
17. Aluminum Hydroxide + Sodium 
Al(OH)3
+ 3 Na

3 NaOH + Al
18. Aluminum plus lithium iodide yields
Al + LiI 
no reaction. Aliminum is not stronger than Lithium.
19. Aluminum plus lead (II) nitrate yields
2 Al + 3 Pb(NO3)2  2 Al(NO3)3
Most Reactive
Lithium
…………………………..…..
Potassium
Sodium
Magnesium
to
+ 3 Pb
………….……………………..
Aluminum
Zinc
Lead
Hydrogen
Least Reactive
Copper
Silver