SC-701
Chromatography
Lower Sec Science · Secondary 1 · Hard · Chromatography
A student sets up paper chromatography to separate food colourings using water as the solvent. The start line is drawn with a pen instead of a pencil. What is the most likely problem with the results?
- The colours will not move up the paper at all.
- The pen ink will dissolve and mix with the colourings.
- The paper will absorb too much water and tear.
- The solvent will evaporate too quickly.
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