CAIE IGCSE Chemistry Homologous Series Definition
Practise defining a homologous series and using functional groups, general formulae and chemical properties to decide whether compounds belong together.
- Syllabus
- 2026–2028
- Course
- Chemistry 0620
Exam points
- define a homologous series as a family with the same functional group and general formula
- explain similar chemical properties through the presence of the same functional group
- compare structures or formulae to decide which compounds belong to the same series
11.1.4—Homologous series is a family of question 1
[Maximum number: 1]
Propane, propene, propan-1-ol and propanoic acid are members of different homologous series. Molecules of these substances contain three carbon atoms.
Explain why members of a homologous series have similar chemical properties.
same functional group
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