The alkene functional group
The alkene functional group

Alkenes are hydrocarbons containing a carbon-carbon double bond, C=C\text{C}=\text{C}C=C. A hydrocarbon contains only carbon and hydrogen atoms.
Step-by-step lessons covering AQA GCSE Chemistry 7.2.2 Reactions of alkenes for Foundation and Higher tier. Each lesson works through exam-style questions in Paper 1 and Paper 2 format. Nail the core quantitative topics — moles, balancing equations and calculations — early on, since they underpin higher-tier questions across every paper and topic.