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Competency #7

• Predict the products for simple chemical reactions

Learning Objective d

• d. Balance simple chemical equations

Question

Write down your answer to the following question:

3 MgO (s) + 2 Fe (s) Fe₂O₃ (s) + 3 Mg(s)

2 Al(s) +3 O₂ (g) Al₂O₃ (s)

Which of the above chemical equations are balanced?

• The top equation is balanced but the lower equation is not.
• The lower equation is balanced but the top equation is not.
• Both equations are balanced.
• Neither equation is balanced.

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