Grade 12 Physical Sciences · Chemical Change

Define redox and cell terms

Give the exact meaning of redox words like oxidation, reduction, oxidising agent, anode and cathode.

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Redox reactions grade 11 Chemistry: Introduction and OverviewMiss Martins Maths and Science

Electrochemistry Introduction Galvanic vs Electrolytic Cell Grade 12 ChemistryMiss Martins Maths and Science

Oxidizing Agents and Reducing AgentsTyler DeWitt

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Question 8.1 · November 2025 · Paper 2 · National (DBE) · 2 marks

The diagram below represents a cell that operates initially under standard conditions. Diagram for this question

8.1 Define the term electrolyte.(2)

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More past paper questions: define redox and cell terms

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3. Question 9.2.1 · November 2024 · Paper 2 · National (DBE) · 2 marks
9.2 The simplified diagram below represents an electrolytic cell. The electrodes are made of carbon.

Answer the questions that follow.
9.2.1 Define an electrolyte.(2)
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  Definition of an electrolyteA substance of which the (aqueous) solution contains ions.
  2 marks · Define redox and cell terms
4. Question 9.1 · November 2023 · Paper 2 · National (DBE) · 2 marks
An electrolytic cell is set up to purify a piece of copper that contains silver and zinc as impurities. A simplified diagram of the cell is shown below. Electrode R is impure copper.

During this electrolysis, only copper and zinc are oxidised (see QUESTION 9.5).
9.1 Define the term electrolysis.(2)
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  Definition of electrolysisThe chemical process in which electrical energy is converted to chemical energy.
  2 marks · Define redox and cell terms
5. Question 7.1.1 · May/June 2023 · Paper 2 · National (DBE) · 2 marks
7.1 The conductivity of three acid solutions, A, B and C, as shown below is investigated at the same temperature.

The brightness of the bulb in the apparatus shown below is used as a measure of the conductivity of the solutions.

The acid solutions are electrolytes.

Answer the questions that follow.
7.1.1 Define the term electrolyte.(2)
Show the memo (1 tick)Memo
1. ✓
  Definition of an electrolyteA substance whose aqueous solution contains ions.
  2 marks · Define redox and cell terms
6. Question 9.1 · May/June 2023 · Paper 2 · National (DBE) · 2 marks
The simplified electrolytic cell below is used to electroplate a metal spring. Zinc nitrate, $Zn(NO_{3})_{2}$ (aq), is used as an electrolyte and R is an electrode.
9.1 Define the term electrolytic cell.(2)
Show the memo (1 tick)Memo
1. ✓
  Definition of an electrolytic cellA cell in which electrical energy is converted into chemical energy.
  2 marks · Define redox and cell terms

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