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C12 Chemical analysis - Coggle Diagram
C12 Chemical analysis
chromatography
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which mixtures have chemicals in common? which chemicals are the most/least soluble? which is a pure substance? 
Required practical activity 12: investigate how paper chromatography can be used to separate and tell the difference between coloured substances. Students should calculate Rf values
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labelled diagram, including the stationary and mobile phase
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pure substances
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how are the melting point and boiling points affected when an impurity is added to a pure substance?