3 x 1 hour lessons

This module focuses on two key types of isomerism: structural and stereoisomerism. You’ll revisit how the same molecular formula can give rise to different structures and how to identify optical isomers based on the presence of chiral centres. This module lays the groundwork for understanding the diversity and complexity of organic molecules.

By the end of this module you will be able to:

• Distinguish between chain, position, and functional group isomerism

• Identify and draw optical isomers of molecules with one or more chiral centres

• Explain how optical isomers rotate plane-polarised light and how this can be measured

• Understand the significance of racemic mixtures and their formation in organic synthesis

• Apply isomerism principles to exam-style problems with clarity and precision

AQA Specification Points:

3.3 Isomerism

3.20 Optical isomerism