Worksheet to teach balancing equations Name

1 Worksheet to teach balancing equations Name _____ Directions: 1. Start Internet Explorer or Netscape and go to 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.

2 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____ Date: _____ 8th balancing equations Worksheet I Balance the following chemical equations 1. 2 K + 2 H2O 2 KOH + H2 2. 3 MnO2 + 4 Al 3 Mn + 2 Al2O3 3. 2 Al2O3 4 Al + 3 O2 4.

3 3 H2 + P2 2 PH3 5. 4 Fe + 3 O2 2 Fe2O3 6. 2 P + 3 Cl2 2 PCl3 7. 2 Al + Fe2O3 2 Fe + Al2O3 8. 2 Mg + O2 2 MgO 9. N2 + 3 H2 2 NH3 Worksheet I p. 2 10. 2 AgCl 2 Ag + Cl2 11. SO2 + H2O H2SO3 12. 2 NO2 2 NO + O2 13. 2 Na + 2 H2O 2 NaOH + H2 14. 2 HCl + FeS FeCl2 + H2S 15. Fe + CuSO4 FeSO4 + Cu 16. 3 Ca(OH)2 + 2 H3PO4 Ca3(PO4)2 + 6 H2O Name: ___Answer Key_____ Date: _____ 8-____ balancing equations Worksheet II 1.

4 2 NaOH + H2SO4 Na2SO4 + 2 H2O 2. 2 NaCl + Ca(NO3)2 2 NaNO3 + CaCl2 3. CuO + H2SO4 CuSO4 + H2O 4. CaC2 + 2 H2O C2H2 + Ca(OH)2 5. 3 Ca(OH)2 + 2 H3PO4 Ca3(PO4)2 + 6 H2O 6. SrCO3 + 2 NH4Br SrBr2 + (NH4)2CO3 Worksheet II page 2 7. C7H16 + 11 O2 7 CO2 + 8 H2O 8. 2 C4H10 + 13 O2 8 CO2 + 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.

5 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_____ Date: _____ 8 - _____ Type of equations Determine the reaction type for each of the following equations : synthesis decomposition single replacement double replacement 1. _ synthesis _ 4Fe + 3O2 2Fe2O3 2. _ decomposition _ 2 NaCl 2Na + Cl2 3. _ synthesis _ N2 + 3H2 2NH3 4. _ double replacement _ HCl + FeS FeCl2 + H2S 5. _ single replacement _ Fe + CuSO4 FeSO4 + Cu 6. _ double replacement _ HCl + AgNO3 HNO3 + AgCl 7. _ synthesis _ P4O10 + 6H2O 4H3PO4 8. _ single replacement _ 3Fe + 4H2O Fe3O4 + 4H2 9. _ decomposition _ 2H3PO4 H4P2O7 + H2O 10. _ single replacement _ Fe2O3 + 3C 3CO + 2Fe 11.

6 _ single replacement _ C10H16 + 8Cl2 10C + 16 HCl 12. _ single replacement _ AgNO3 + Cu CuNO3 + Ag Name: ___Answer Key_____ Date: _____ 8 - _____ balancing equations Worksheet III 1. 2 NaCl 2 Na + Cl2 2. N2 + 3 H2 2 NH3 3. 2 P + 3 Cl2 2 PCl3 use covalent bonding 4. HCl + AgNO3 HNO3 + AgCl 5. 2 Al + 3 Ca(OH)2 2 Al(OH)3 + 3 Ca 6. 2 AgNO3 + Cu Cu(NO3)2 + 2 Ag 7. 2 K + Br2 2 KBr Worksheet III 8. 2 Al + Fe2O3 Al2O3 +2Fe 9. 4 Al + 3 O2 2 Al2O3 10. FeCl3 + 3 NH4OH Fe(OH)3 + 3 NH4Cl 11. 2 Au2O3 4 Au + 3 O2 12. Magnesium plus oxygen yields 2 Mg + O2 2 MgO 13. Zinc + Oxygen 2 Zn + O2 2 ZnO 14.

7 Hydrogen Sulfide H2S H2 + S Worksheet III p. 3 15. Potassium Chloride 2 KCl 2 K + Cl2 16. Silver plus Copper nitrate yields Ag + Cu(NO3)2 no reaction. Silver is not stronger than Copper. 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 + 3 Pb Most Reactive .. to .. Least Reactive Lithium Potassium Sodium Magnesium Aluminum Zinc Lead Hydrogen Copper Silver