AQA practicals Chemistry Рchromatography 

Investigate how paper chromatography can be used to separate and tell the difference between coloured substances. Students should calculate Rf values

Use of appropriate apparatus to make and record a range of measurements accurately.
Safe use of a range of equipment to purify and/or separate chemical mixtures including chromatography.

Carry out experiments appropriately having due regard for the correct manipulation of apparatus, the accuracy of measurements and health and safety considerations.
Make and record observations and measurements using a range of apparatus and methods.

Typical questions