Functional Groups Functional group A given functional group behaves in nearly the same way in every molecule it is a part of The chemistry of every organic molecule,regardless of size and complexity,is determined by the functional groups it contains In the reactions of ethylene and menthene with bromine both molecules react with Br2 in the same way Double bond CH H2C H2C-CH C-CH3 Ethylene Menthene Bromine added here CH2 H2C-CH C-CH3 Functional group ▪ A given functional group behaves in nearly the same way in every molecule it is a part of ▪ The chemistry of every organic molecule, regardless of size and complexity, is determined by the functional groups it contains ▪ In the reactions of ethylene and menthene with bromine both molecules react with Br2 in the same way Functional Groups