Unit Award Scheme

122542 CHEMICAL ANALYSIS

In successfully completing this unit, the Learner will have		Evidence needed
demonstrated the ability to
1	define the term 'pure substance', giving an example	Summary sheet and/or student completed work
2	identify the given pure substances and mixtures from data about their melting and boiling points	Summary sheet and/or student completed work
3	identify and describe a formulation when provided information on the melting and boiling points	Summary sheet and/or student completed work
4	describe chromatography, including the terms 'stationary phase' and 'mobile phase'	Summary sheet and/or student completed work
5	identify at least two pure substances using paper chromatography	Summary sheet and/or student completed work
6	explain what the Rf (retention factor) value of a compound represents and how the Rf value differs in at least two different solvents	Summary sheet and/or student completed work
7	interpret and determine Rf values from given chromatograms	Summary sheet and/or student completed work
8	investigate the ways paper chromatography can be used to separate and differentiate between coloured substances	Summary sheet and/or student completed work
9	explain the key stages of the process of testing for the presence of hydrogen, oxygen, carbon dioxide and chlorine gases	Summary sheet and/or student completed work
experienced
10	observing at least two chemical tests to identify the ions in given unknown single-ionic compounds.	Summary sheet and/or student completed work

All outcomes recorded on an AQA Summary Sheet

Approved 22 November 2024Level - Level One