SC-687
Chromatography
Lower Sec Science · Secondary 1 · Medium · Chromatography
In a chromatography experiment, a green food colouring is spotted on the start line. After running, two separate spots appear higher up the paper. What does this show about the green food colouring?
- It is a mixture of two different dyes.
- It is a pure substance.
- It does not dissolve in the solvent.
- It reacts with the paper to form new dyes.
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