Organic molecules and formulae
Organic molecules and formulae

Organic chemistry mostly deals with carbon compounds, and a hydrocarbon contains only carbon and hydrogen. Molecules in the same homologous series share a functional group and similar reactions, while neighboring members differ by CH2CH_2CH2.
Step-by-step lessons covering Edexcel A Level Chemistry Organic nomenclature and isomerism for A Level Chemistry. Each lesson works through exam-style questions in Paper 1, Paper 2 and Paper 3 format. Build confidence with atomic structure, bonding and moles calculations early on, since these underpin the more demanding organic mechanisms, equilibrium and practical-analysis topics that dominate Year 2.