Red cabbage pH indicator

Red cabbage pH indicator

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Caption: Natural pH indicator. Flasks containing chemicals of different pH (hydrogen ion concentration), revealed using an extract of red cabbage. The red cabbage (Brassica oleracea var. capitata) contains a chemical called anthocyanin. In acidic solutions this appears red or pink, in alkaline solutions it appears blue or purple, and in neutral solutions it appears pale green or yellow.

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Keywords: acid, acidic, acidity, alkali, alkaline, alkalinity, anthocyanin, aqueous solution, brassica oleracea capitata, chemical, chemistry, colour change, coloured, colours, conical flask, demonstration, experiment, flasks, hydrogen ion concentration, indication, laboratory, natural, neutral, neutrality, no-one, nobody, ph indicator, plant, red cabbage, school, school science, science education, simple, solutions, studio shot, white background

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