Recall the first four members of the homologous series of alkenes as ethene, propene, butene and pentene.

In the subtopic Structure and formulae of alkenes, this learning objective focuses on recall the first four members of the homologous series of alkenes as ethene, propene, butene and pentene. It sits within Reactions of alkenes and alcohols (chemistry only) for AQA GCSE Chemistry 8462 Unit 4.7 Organic chemistry, so the explanation must stay anchored to organic chemistry rather than becoming a generic carbon-compounds fact. Approved keywords to use include alkene, homologous series, ethene, propene, butene, pentene. Alkene. means a hydrocarbon that contains a carbon-carbon double bond Avoid the mistake of students often confuse the names of the first four alkenes, mixing them up or omitting one; instead, memorize the names in order: ethene, propene, butene, and pentene. Use flashcards or mnemonic devices to help remember For exam answers, create flashcards for the first four alkenes: ethene, propene, butene, and pentene Keep molecular formula, structural formula, displayed formula, and general formula distinct. Do not confuse alkanes with alkenes, saturated with unsaturated, cracking with combustion, polymers with monomers, or hydrocarbons with oxygen-containing alcohols and carboxylic acids. When formulae are used, preserve the stored notation exactly and explain the GCSE chemistry idea in words rather than using unsupported displayed-formula diagrams.