Unit Award Scheme

115112 SEPARATING MIXTURES OF CHEMICALS USING CHROMATOGRAPHY

In successfully completing this unit, the Learner will have		Evidence needed
demonstrated the ability to
1	write a definition for 'solute', 'solvent' and 'solution'	Student completed work
2	collect the equipment and apparatus needed for chromatography, ie a non-permanent black marker pen, water, a 250 cm3 glass beaker, a wooden spill, a rectangle of chromatography paper, a paper clip, a ruler and a pencil	Summary sheet
3	follow a given set of chromatography method steps to separate the black ink solution into different solutes using the solvent water	Summary sheet
4	label the origin line and solvent front line and in pencil, circle the different 'spots' that have separated out of the non-permanent black ink	Student completed work
5	make length measurements to calculate Rf values to show that each of the different spots are different solutes	Student completed work
6	carry out research to find out at least two key facts about the Russian scientist Mikhail Tsvet, who discovered the chromatography technique.	Student completed work

All outcomes recorded on an AQA Summary Sheet

Approved 24 February 2021Level - Level One