2 x 1 hour lessons

This module revises the chemistry of halogenoalkanes, focusing on their structure, reactivity, and the mechanisms of their key reactions. You'll explore how these compounds undergo nucleophilic substitution and elimination reactions, and gain confidence in applying curly arrow mechanisms to unfamiliar examples.

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

• Recognise and name primary, secondary and tertiary halogenoalkanes

• Explain the polarity of the carbon–halogen bond and its influence on reactivity

• Write and explain nucleophilic substitution mechanisms with OH⁻, CN⁻ and NH₃

• Write and explain elimination mechanisms using hot, ethanolic OH⁻

• Predict the products and reaction conditions for substitution vs elimination

• Apply curly arrow mechanisms with confidence in both substitution and elimination contexts

AQA Specification Points:

3.8 Nucleophilic substitution

3.9 Elimination