Chemistry · Oct / Nov 2024 · Paper 61 · Question 4
0620
As printed in the paper
The question as text
Beetroot is a coloured vegetable. The colour is caused by a mixture of water-soluble coloured compounds. Plan an experiment to nd how many water-soluble coloured compounds there are in a beetroot. Include in your plan: ● how to extract the coloured compounds from a beetroot ● how to separate the mixture of coloured compounds ● how the results show how many coloured compounds there are in a beetroot. You are provided with a beetroot, distilled water and common laboratory apparatus. [6]
Read automatically from the paper; the printed page above is exact.
Show the answer and mark scheme
any six from:
MP1 crush / grind beetroot
MP2 with pestle / mortar
MP3 with water
MP4 place (a drop of) liquid / colour on (chromatography / filter) paper
MP5 chromatography
MP6 (bottom of) paper dipped in water
MP7 number of coloured substances = number of spots
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