Chromatography flower

Chromatography flower

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Credit: Science Source/SCIENCE PHOTO LIBRARY

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Caption: Paper chromatography is a physical method for separating mixtures. In this sequence a piece of filter paper is folded in a cone and placed over a glass of vinegar, such that the top of the cone is slightly above the rim. A coloured washable marker is used to draw a circle around the centre of the paper. When the vinegar reaches the paper, the ink dissolves and travels outward with the vinegar, in the process separating into constituent pigments.

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Keywords: capillary, capillary action, chemical, chemistry, chromatography, color, colour, coloured, dye, false-coloured, glass, image sequence, image series, ink, liquid, marker, mixture, paper chromatography, photo sequence, physical, physics, pigment, separate, separation, sequence, sequential, serial, series, solution, studio image, vinegar

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