Red cabbage pH indicator

Red cabbage pH indicator

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Caption: Natural pH indicator. Three 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, blue, brassica oleracea capitata, chemical, chemistry, colour change, coloured, colours, conical flask, demonstration, experiment, flasks, hydrogen ion concentration, indication, laboratory, natural, neutral, neutrality, ph indicator, plant, red, red cabbage, school, school science, science education, simple, solutions, three, trio, yellow

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