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Balancing Chemical Equations Worksheet

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Balancing Chemical Equations Worksheet

Chemical equation balance scale

📚 What is Balancing Chemical Equations?

Balancing chemical equations means making sure that the same number of each type of atom appears on both sides of the equation. This follows the Law of Conservation of Mass - atoms cannot be created or destroyed in a chemical reaction, only rearranged.

Steps to Balance:

1. Count the atoms of each element on both sides

2. Add coefficients (numbers in front of formulas) to balance

3. Never change the chemical formulas themselves

4. Check your work by counting atoms again

⚖️ Practice Problems - Balance These Equations

1. _____ H₂ + _____ O₂ → _____ H₂O
2. _____ Na + _____ Cl₂ → _____ NaCl
3. _____ Mg + _____ O₂ → _____ MgO
4. _____ Al + _____ CuSO₄ → _____ Al₂(SO₄)₃ + _____ Cu
5. _____ Fe + _____ O₂ → _____ Fe₂O₃
6. _____ Ca(OH)₂ + _____ HCl → _____ CaCl₂ + _____ H₂O

🔥 Challenge Problems - Combustion Reactions

7. _____ CH₄ + _____ O₂ → _____ CO₂ + _____ H₂O
8. _____ C₂H₆ + _____ O₂ → _____ CO₂ + _____ H₂O
9. _____ NH₄NO₃ → _____ N₂O + _____ H₂O
10. _____ Ca₃(PO₄)₂ + _____ H₂SO₄ → _____ CaSO₄ + _____ H₃PO₄

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