AQA GCSE 9-1 Chemistry Unit 8 Chemical analysis 4.8.1 Purity, formulations and chromatography

4.8 Chemical analysis
4.8.1 Purity, formulations and chromatography
4.8.1.1 Pure substances
4.8.1.2 Formulations
4.8.1.3 Chromatography

4.8.2 Identification of common gases (not really a lesson - part of lesson 2)
4.8.2.1 Test for hydrogen
4.8.2.2 Test for oxygen
4.8.2.3 Test for carbon dioxide
4.8.2.4 Test for chlorine

Content split over 4 lessons -but more including practical lessons (lessons in our school are 40 minutes so can condense material for longer lessons if required)
All exam questions have been removed for copyright purposes
All extension questions available on each slide
Answers all underneath each slide
Support also available where necessary
AfL sections and mini quizzes
Reducing the need for photocopying

Lesson 1: Purity
Objectives:
To be able to explain the differences between a pure substance and a mixture
To be able to explain how impurities affect melting and boiling points
To understand how to interpret melting point data

Lesson 2: Formulation
Objectives:
To create a formulation
To explain the term formulation
Tests for common gases

Lesson 3: Chromatography
Objectives:
To be able to describe how paper chromatography can be used to separate mixtures
To be able identify a mixture and a pure substance on a chromatogram
To answer questions consolidating learning

Lesson 4: Chromatography analysis
Objectives:
To be able evaluate the chromatography experiment
To be able use our math skills and interpret our chromatogram
To apply all knowledge to exam questions