Identify the monomer that would produce poly(propene) and describe its structure.

The monomer that produces poly(propene) is propene, which has the molecular formula C3H6. Its structure includes a carbon-carbon double bond between two carbon atoms, with the third carbon bonded to one of them, making it an alkene.

This question assesses the student's ability to recognize the monomer for a specific polymer and describe its structural features. It tests knowledge of both the polymer and its corresponding monomer. This response is aligned to Polymerisation and naturally occurring polymers because it explains recognise addition polymers and monomers from diagrams and from the presence of the C=C functional group in the monomers using the correct AQA GCSE Chemistry organic context. Keep molecular formula, structural formula, displayed formula, and general formula distinct. Do not confuse alkanes with alkenes, saturated with unsaturated, cracking with combustion, polymers with monomers, or hydrocarbons with oxygen-containing alcohols and carboxylic acids. When formulae are used, preserve the stored notation exactly and explain the GCSE chemistry idea in words rather than using unsupported displayed-formula diagrams.