Combined Science GCSE
R_f as a ratio
What R_f as a ratio means in Combined Science GCSE, as defined for AQA.
Definition of R_f as a ratio
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Reference: AQA
A value comparing how far a dissolved substance travels with how far the solvent front travels, having no units and always between 0 and 1.
Topics that use R_f as a ratio
- Chromatography (AQA GCSE)
Related terms
- Chromatogram
- Chromatography
- Distribution between phases
- Identification by comparison
- Identification of substances
- Identification using reference values
- Impure substance
- Measurement from a baseline
Using R_f as a ratio in the exam
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