Key term for Edexcel GCSE Chemistry, used in Separating and Purifying Substances.
A ratio used to identify substances in chromatography, calculated by dividing the distance moved by the spot by the distance moved by the solvent front.
Rf Value (Retention Factor) appears in Edexcel GCSE Chemistry revision content for States of Matter and Mixtures, especially Separating and Purifying Substances and Separation Techniques.
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