Chemistry Worksheet: Balancing Chemical Equations
Instructions: Balance the following chemical equations by writing the correct wholenumber coefficients in the blanks. Do not change the chemical formulas.
1. 1. ___ H₂ + ___ O₂ → ___ H₂O
2. 2. ___ N₂ + ___ H₂ → ___ NH₃
3. 3. ___ Na + ___ Cl₂ → ___ NaCl
4. 4. ___ Mg + ___ O₂ → ___ MgO
5. 5. ___ Zn + ___ HCl → ___ ZnCl₂ + ___ H₂
6. 6. ___ Al + ___ Br₂ → ___ AlBr₃
7. 7. ___ Fe + ___ S → ___ FeS
8. 8. ___ H₂ + ___ Cl₂ → ___ HCl
9. 9. ___ C + ___ O₂ → ___ CO₂
10. 10. ___ Ca + ___ H₂O → ___ Ca(OH)₂ + ___ H₂
11. 11. ___ CH₄ + ___ O₂ → ___ CO₂ + ___ H₂O
12. 12. ___ C₂H₆ + ___ O₂ → ___ CO₂ + ___ H₂O
13. 13. ___ C₃H₈ + ___ O₂ → ___ CO₂ + ___ H₂O
14. 14. ___ H₂ + ___ I₂ → ___ HI
15. 15. ___ K + ___ H₂O → ___ KOH + ___ H₂
(30 marks)