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GCSE Combined Science · key term
A family of compounds with the same general formula and similar chemical properties. Successive members differ by and show gradual changes in physical properties.
Used by AQA and Edexcel
Specification 5.7.1.1 · Paper 4
Revise: Crude Oil and AlkanesAlkanes belong to a homologous series: a family of compounds with a shared general formula and similar chemical properties. Each successive member has one more carbon atom and two more hydrogen atoms than the previous member.
Specification Fuels · Paper 3, Paper 4
A family of compounds with the same general formula and similar chemical properties. Neighbouring members differ by and physical properties change gradually through the series.
Revise: Crude oil, fractional distillation and crackingMost hydrocarbons in crude oil fractions belong to the alkane homologous series. Alkanes are saturated hydrocarbons: they contain only single bonds between carbon atoms. An unsaturated hydrocarbon, by contrast, contains a carbon–carbon double bond.
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