#204
4.5.3 Chemical cells and batteries
Paper 1 · Triple only
What you need to know
- (Key facts / definitions / equations for this spec point)
Support videos
- FreeScienceLessons (topic playlist): (use links below)
- FreeScienceLessons (Energy changes playlist): https://www.youtube.com/playlist?list=PL9IouNCPbCxX74bPfz0TGVVmyGYgMarWu
Self-assessment (checklist)
- I can recall the equations used to calculate the mean
- I can recall the units of rate of reaction.
- I can calculate the mean rate of a reaction from given
Key steps (method)
- Identify what the question is testing (definition / calculation / explanation).
- Use the correct chemistry vocabulary and link cause → effect.
- If it’s a calculation: write the equation/formula first, then substitute carefully.
Common mistakes
- Giving a fact without linking it to the question.
- Missing units / state symbols when asked.
- Not showing enough working to score method marks.
Exam-style questions (quick)
- Define the key term(s) for this mini-topic.
- Explain a typical property/result using particle/bonding ideas.
- Do a short calculation or interpretation step relevant to this mini-topic.
Revision links
- FreeScienceLessons: https://www.youtube.com/playlist?list=PL9IouNCPbCxX74bPfz0TGVVmyGYgMarWu
- PMT (notes + questions): https://www.physicsandmathstutor.com/chemistry-revision/gcse-aqa/energy-changes/
- BBC Bitesize: https://www.bbc.co.uk/bitesize/topics/z34kgdm