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HomeAQA GCSE ChemistryChemical analysis: chromatography and Rf values
AQA · GCSE · Chemistry

Chemical analysis: chromatography and Rf values
Practice Questions

20 AQA GCSE Chemistry questions on Chemical analysis: chromatography and Rf values, each with instant feedback and a full examiner-style mark scheme.

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✨ Revision guide includes key terms, worked examples and exam technique for Chemical analysis: chromatography and Rf values.

Try 2 sample questions on Chemical analysis: chromatography and Rf values

Question 1 · 1 mark · Difficulty 1/3

What is chromatography used to do?

  1. Separate mixtures of soluble substances
  2. Separate insoluble solids
  3. Measure pH
  4. Speed up reactions
Show answer & explanation
✓ Answer: ASeparate mixtures of soluble substances
Chromatography separates mixtures of dissolved (soluble) substances based on how strongly each is attracted to the stationary and mobile phases.
Question 2 · 1 mark · Difficulty 1/3

In paper chromatography, what are the two phases called?

  1. Stationary phase and mobile phase
  2. Solid phase and gas phase
  3. Hot phase and cold phase
  4. Acid phase and base phase
Show answer & explanation
✓ Answer: AStationary phase and mobile phase
The stationary phase is the chromatography paper; the mobile phase is the solvent that moves through it carrying the substances.
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AQA GCSE Chemistry: Chemical analysis: chromatography and Rf values FAQ

How many AQA GCSE Chemistry questions on Chemical analysis: chromatography and Rf values are there on Kramizo?
Kramizo currently has 20 exam-board-aligned practice questions on Chemical analysis: chromatography and Rf values for AQA GCSE Chemistry, with new questions added every week. Each question gives you instant feedback and a full examiner-style mark scheme that tells you exactly what would earn marks on a real AQA paper. The questions span the full difficulty range — from straightforward recall (level 1) right up to multi-step reasoning and evaluation (level 3) — so the bank works for first-pass revision and final exam-week stress testing alike.
Is Kramizo free for AQA GCSE students preparing for Chemistry?
Yes — completely free. Every student gets 45 questions a day on the free plan, with no card required and no trial countdown. That free quota works across every subject and every topic in our bank, so you can mix Chemical analysis: chromatography and Rf values practice with other Chemistry topics or even switch to a totally different AQA subject without paying anything. Kramizo's optional Pro plan removes the daily cap and adds detailed progress analytics, but the free tier is the real product — used by thousands of GCSE, IGCSE and CSEC students.
Are the Chemical analysis: chromatography and Rf values questions aligned to the official AQA GCSE Chemistry syllabus?
Every question is written against the published AQA GCSE Chemistry specification, including the exact command words (state, describe, explain, calculate, evaluate, etc.), mark allocations, and difficulty tier you'd see on a real AQA paper. Explanations are written in the style of official examiner mark schemes — they tell you what is being awarded marks and why distractors are wrong, not just whether you got it right. The bank is continually refined to match the latest syllabus updates from AQA.
How is Chemical analysis: chromatography and Rf values typically tested on AQA GCSE Chemistry papers?
Chemical analysis: chromatography and Rf values appears across multiple question types on real AQA GCSE Chemistry papers — most commonly as multiple-choice questions in the objective section, structured short-answer questions in the main paper, and occasionally as part of an extended response. Kramizo's practice bank reflects that mix: 4-option MCQs, true/false statements, fill-in-the-blank key terms, multi-select questions, and ordering questions. Working through the bank gives you exposure to every question style examiners actually use.

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