What term describes reactions in which one or more small molecules combine to form larger molecules during the reaction?

• A. Polymerizing materials
• B. Oxidizing materials
• C. Rearranging materials
• D. Decomposing materials

Answer: (A)

Polymerization is the process by which small molecules called monomers link together to form larger molecules called polymers. The term describing reactions where one or more small molecules combine to form larger molecules during the reaction is polymerization, and “polymerizing materials” refers to materials undergoing that process. This differs from oxidation, which involves adding oxygen or removing electrons; rearranging materials, which means changing the connectivity without building larger molecules; and decomposing materials, which breaks down substances into smaller pieces. In practice, polymerization can be highly exothermic and require careful temperature control and stabilizers to prevent runaway reactions.