Purity, formulations and chromatography 2.0 / 5 based on 1 rating ? ChemistryAnalysing substancesGCSEAQA Created by: MeganVaughanCreated on: 27-02-18 10:26 Pure substance A single element or compound that is not mixed with any substance 1 of 9 Formulation A mixture that has been designed as a useful product 2 of 9 Oxygen test Insert a glowing splint into a tube of gas if the splint relights oxygen is present 3 of 9 Hydrogen test Insert a burning splint into a tube of the gas, squeaky pop 4 of 9 Carbon dioxide Limewater goes cloudy 5 of 9 Chlorine Litmus paper is bleached 6 of 9 Why is chromatography Chromatography can be used to separate mixtures and also to identify substances 7 of 9 Rf distance moved by substance / distance moved by solvent 8 of 9 An element A compound is a substance containing atoms of different elements joined together 9 of 9
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