Some plants produce ethene gas. A student extracts a mixture of coloured compounds from a plant. Fig. 4.1 shows the results of chromatography of this mixture. Fig. 4.1 (i) Complete Fig. 4.1, to show: - where the mixture of coloured compounds is placed on the chromatography paper at the start of the chromatography - the level of the solvent at the start of the chromatography. (ii) State two characteristics of a mixture. 1 ...................................................................................................................................... ......................................................................................................................................... . 2 ...................................................................................................................................... ......................................................................................................................................... .

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