SC-660
Chromatography
Lower Sec Science · Secondary 1 · Medium · Chromatography
A student places a drop of blue ink in the centre of a piece of chromatography paper and dips the bottom edge into water. After some time, several coloured spots appear at different heights. What does this show about the ink?
- It is a mixture of different dyes.
- It is a pure single dye.
- It does not dissolve in water.
- It is made only of water.
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