____ is a separation technique used to separate mixtures of soluble substances. These are often ____ substances such as food colourings, inks, dyes or plant pigments. Chromatograms can be used to match known ____ with those in a mixture. On a chromatogram, one spot means that the substance is ____. An ____ substance produces two or more spots.

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Восстановить автоматически сохраненное: ?