2 x 1 hour lessons

This module explores two important forms of isomerism in organic chemistry: structural isomerism and stereoisomerism. You'll begin by learning how structural isomers have the same molecular formula but different structures — including chain, position, and functional group isomers.

You’ll then move on to stereoisomerism, focusing on E/Z isomerism in alkenes and optical isomerism (chirality) in molecules with a single chiral centre. You’ll practise identifying isomers, drawing them accurately, and understanding how they arise.

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By the end of this module, you’ll be able to:

• Distinguish between different types of structural isomerism

• Identify and draw E/Z isomers in alkenes

• Recognise chiral centres and draw enantiomers

• Understand the significance of optical isomerism in biological and pharmaceutical chemistry

OCR (A) specification points covered: 4.1.1 Basic concepts of organic chemistry 6.2.2 Amino acids, amides and chirality