#6
4.1.3 Chromatography
Paper 1 · Higher combined
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=PL9IouNCPbCxULWXCO9jt0PsuAbxYpw2_1
- PMT (notes + questions): https://www.physicsandmathstutor.com/chemistry-revision/gcse-aqa/atomic-structure-and-periodic-table
- BBC Bitesize: https://www.bbc.co.uk/bitesize/topics/zxnftv4