Balancing Redox Equations Worksheet
A Grade 10 Science worksheet focusing on balancing redox equations using the half-reaction method.
Includes
Standards
Balancing Redox Equations
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Date:
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Read each question carefully and balance the redox equations as instructed. Show all your work for full credit.
1. In a redox reaction, what does 'oxidation' refer to?
Gain of electrons
Loss of electrons
Gain of protons
Loss of protons
2. Which of the following is an oxidizing agent?
A substance that is oxidized
A substance that loses electrons
A substance that causes reduction
A substance that is reduced
3. The process of gaining electrons in a redox reaction is called .
4. In acidic solutions, we balance oxygen atoms by adding molecules.
5. Balance the following redox reaction in acidic solution using the half-reaction method:
Cr₂O₇²⁻(aq) + C₂O₄²⁻(aq) → Cr³⁺(aq) + CO₂(g)
6. Balance the following redox reaction in basic solution using the half-reaction method:
MnO₄⁻(aq) + C₂O₄²⁻(aq) → MnO₂(s) + CO₂ (g)
7. In basic solutions, H⁺ ions are added to balance hydrogen atoms, and then OH⁻ ions are added to neutralize the H⁺ ions.
True
False
8. The oxidation number of an uncombined element is always zero.
True
False