Linear and Branched Alkanes
Alkanes are hydrocarbons that only contain single bonds. They are classified into linear, branched, cyclic, and polycyclic alkanes.
Homologous Series
Linear alkanes form a homologous series as they only differ in the number of -CH2 groups and can be derived from a general formula: CH3-(CH2)n-CH3.
Isomers
Compounds that have the same molecular formula but different structures are called isomers. Butane and 2-methylpropane are isomers with the formula C4H10.