IGCSE Biology

Tuesday, March 19, 2019

4.3 know what is meant by the terms homologous series, functional group and isomerism

Functional Group: an atom/a group of atoms that determines the chemical properties of a compound.
e.g. functional group of alcohols is -OH, alkenes is C=C (double bond)

Homologous Series: 
- same general formula
- similar chemical properties because they have the same functional group.
- a trend in physical properties

Isomers: molecules with the same molecular formula but with a different displayed formula.

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