Electrochemical Cells
AQA A-Level Chemistry
3.1.11
This topic explains how electrochemical cells produce electricity using redox reactions in half-cells. It underpins how batteries work and how chemists compare different metals using standard electrode potentials. It is also important for understanding calculating cell EMF in AQA exams.
Begin with the Learn section if this is your first time covering the topic. If you are revising, move to Revise. If you are testing yourself, go straight to Practise.
In this topic you will:
- Learn what an electrochemical cell is.
- Understand how oxidation and reduction drive electron flow in electrochemical cells.
- Understand the role of half-cells in generating a potential difference.
- Understand how metal reactivity affects electrode potential.
Learn
Gain a complete understanding
Learn the core concepts and build a solid understanding.
What to do:
- Watch the video from start to finish.
- Focus on understanding key concepts.
- Take notes using the guided notes.
Revise
Check understanding and build recall
Reinforce your knowledge by testing your recall regularly.
What to do:
- Use the flashcards (Leitner system).
- Do brain dumps to test your recall.
- Watch the video (coming soon) to check and fix gaps.
Practise
Apply knowledge in exam questions
Practise exam style questions and develop exam technique
What to do:
- Attempt the questions first (no notes!).
- Watch the video walkthrough (coming soon).
- Check your answers and learn from any mistakes.
Where does this fit?
This lesson is part of the Electrochemistry topic in Physical Chemistry.