SC-832
Chromatography
Lower Sec Science · Secondary 1 · Easy · Chromatography
A spot of green food colouring is separated by paper chromatography in water. After the run, three separate coloured spots appear at different heights on the paper. What can you conclude about the green food colouring?
- It is a pure substance.
- It is a mixture of three different dyes.
- It is insoluble in water.
- It contains no coloured substances.
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