H Free-Radical chain reaction C——H Initiation generates a reactive intermediate Propagation the intermediate reacts with a stable molecule to produce another reactive intermediate(and a product molecule Termination side reactions that destroy the reactive intermediate Chapter 4Chapter 4 4 Free-Radical Chain Reaction • Initiation generates a reactive intermediate. • Propagation: the intermediate reacts with a stable molecule to produce another reactive intermediate (and a product molecule). • Termination: side reactions that destroy the reactive intermediate. =>