Chemistry GCSE
Homologous series
What Homologous series means in Chemistry GCSE, as defined for OCR, Pearson Edexcel.
Definitions of Homologous series
Exam boards and our study guides word this term in slightly different ways. Learn the version your board uses.
A family of organic compounds that have the same general formula, similar chemical properties, and show a gradual trend in physical properties.
A family of organic compounds with the same general formula, similar chemical properties, and a trend in physical properties.
Topics that use Homologous series
- Topic C6: Global challenges (OCR GCSE)
- Separate chemistry 2 (Pearson Edexcel GCSE)
Related terms
- Catalyst
- Dynamic Equilibrium
- Life Cycle Assessment (LCA)
- Phytoextraction
- Addition reaction
- Functional group
- Hydrocarbon
- Saturated
Using Homologous series in the exam
Definition questions usually carry one or two marks, and examiners look for the precise wording. Write the definition from memory, check it against the version above, and then use the term in a longer answer on the same topic so it sticks.
Practise Chemistry questions
Create a free account to answer exam-style questions on this topic and get feedback on your answers.
Start free
All Chemistry GCSE terms7 days Premium · Then free forever · No card, no charge