Homologous series
Homologous series: ‘family’ of similar compounds with similar properties due to the presence of the same functional group.
Characteristics of a homologous series:
-all the compounds fit the same general formula
-the chain length increases by 1 each time
-as the chain gets longer, the compounds show a gradual change in properties.
Structural isomers: have the same chemical formula, but different structures, they can be straight or branched.