Chemistry GCSE
Rf values and identification
What Rf values and identification means in Chemistry GCSE, as defined for AQA.
Definition of Rf values and identification
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Reference: AQA
The distance each spot travels relative to the solvent front gives its Rf value, and matching both spot colour and Rf value with known reference spots identifies substances.
Topics that use Rf values and identification
- Chromatography (AQA GCSE)
Related terms
- Chromatography
- Distribution between phases
- Practical measurement and accuracy
- Rate of movement
- Rf values
- Separation of mixtures
- Separation techniques
- Effect of changing conditions
Using Rf values and identification in the exam
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