1.9 Separation Techniques - Chromatography (GCSE Chemistry)

The following is a GCSE Chemistry test covering '1.9 Separation Techniques - Chromatography'

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Question 1

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In chromatography, what term describes the solvent used to move the components?

What is meant by the Rf value in chromatography?

What term is used to describe the solid phase, often paper, used in chromatography?

Why must the baseline be drawn in pencil rather than ink?

What is the main purpose of chromatography?

Why should the level of solvent be below the spot of sample initially?

Which of the following cannot be distinguished using chromatography?

Paper chromatography separates substances mainly based on what property?

When is chromatography complete?

Which characteristic leads to substances moving differently on chromatography paper?

What precaution would avoid contamination during chromatography?

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