Balancing Chemical Equations Worksheet

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Chemical equation balance scale illustration

🎯 Learning Objectives

WALT (We Are Learning To): Balance chemical equations using coefficients to ensure equal numbers of atoms on both sides

Success Criteria:

I can identify reactants and products in a chemical equation

I can count atoms of each element on both sides of an equation

I can use coefficients to balance simple equations

I can balance more complex equations with multiple elements

⚖️ Part 1: Basic Balancing Practice

1. Balance this equation by adding coefficients:

_____ H₂ + _____ O₂ → _____ H₂O

2. Balance this equation:

_____ Na + _____ Cl₂ → _____ NaCl

3. Balance this combustion reaction:

_____ CH₄ + _____ O₂ → _____ CO₂ + _____ H₂O

4. Which statement about balanced equations is correct?

The number of molecules must be equal on both sides

The number of atoms of each element must be equal on both sides

The total mass can change during the reaction

Coefficients change the chemical formula

5. Convert this word equation to symbols and balance it:

Magnesium + Oxygen → Magnesium oxide

🔬 Part 2: Challenge Problems & Extension

6. Balance this more complex equation:

_____ Al + _____ CuSO₄ → _____ Al₂(SO₄)₃ + _____ Cu

7. Balance and identify the type of reaction:

_____ Ca(OH)₂ + _____ HCl → _____ CaCl₂ + _____ H₂O

Reaction type: _________________

8. Extension Activity: Explain why we cannot change subscripts (like H₂O to H₃O) when balancing equations:

9. Advanced Challenge: Balance this equation and calculate the total number of atoms on each side:

_____ Fe₂O₃ + _____ CO → _____ Fe + _____ CO₂

10. Real-world Connection: Research and write the balanced equation for photosynthesis:

💡 Differentiation Support

For visual learners: Draw diagrams showing atoms before and after reactions

For struggling learners: Start with questions 1-3, use atom counting tables

For advanced learners: Complete all questions plus research ionic equations

Dyslexia-friendly tip: Use different colours for different elements when counting atoms

Balancing Chemical Equations Worksheet

Balancing Chemical Equations Worksheet

🎯 Learning Objectives

⚖️ Part 1: Basic Balancing Practice

🔬 Part 2: Challenge Problems & Extension

💡 Differentiation Support

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