Redox Equations Worksheet
A Grade 9 Science worksheet focusing on understanding and balancing redox equations, identifying oxidation and reduction, and recognizing oxidizing and reducing agents.
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Redox Equations Worksheet
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Read each question carefully and answer to the best of your ability. Show all your work for calculations.
1. In a redox reaction, what happens to the substance that is oxidized?
It gains electrons.
It loses electrons.
Its oxidation number decreases.
It acts as an oxidizing agent.
2. Which of the following is an example of a reduction half-reaction?
Fe → Fe²⁺ + 2e⁻
Cl₂ + 2e⁻ → 2Cl⁻
C → CO₂ + 4e⁻
S²⁻ → S + 2e⁻
3. Oxidation is the of electrons, while reduction is the of electrons.
4. A substance that causes another substance to be oxidized is called an agent.
5. In the reaction 2Na + Cl₂ → 2NaCl, sodium (Na) is reduced.
True
False
6. An oxidizing agent itself gets oxidized in a redox reaction.
True
False
7. For the following reaction: CuO + H₂ → Cu + H₂O Identify the element that is oxidized and the element that is reduced. State the oxidizing agent and the reducing agent.
8. Balance the following redox equation in acidic medium: Cr₂O₇²⁻ + SO₃²⁻ → Cr³⁺ + SO₄²⁻