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GCSE Combined Science · key term
A small molecule that can join with other monomer molecules to form a polymer.
Used by AQA and OCR
Specification 4.8.1.4 · Paper 3, Paper 4
A small molecule that can join with many other small molecules to form a polymer.
Revise: Cracking HydrocarbonsEach starting ethene molecule is a monomer. During polymerisation, its double bond changes so that bonds can form between neighbouring monomers, building a long chain. Poly(ethene) is a plastic used, for example, in packaging.
Specification B1.2a, B1.3d, B1.3e · Biology Paper 1
Distinguish the whole molecule from its subunits: DNA is the polymer; a nucleotide is a monomer.
Apply the terms to a named example: glucose is a monomer; starch is a polymer made from many glucose units.
Use the terms precisely: amino acids are the monomers; proteins are the polymers.
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A small molecular unit that can join with other units to form a polymer.
A polymer is a large molecule made from many smaller molecular units joined together. These smaller units are called monomers.
A small molecule that can join to other similar molecules to form a polymer. Glucose is the monomer used to make starch.
A small molecule that can join with other monomers to form a polymer.
Chemistry, Combined Science
Revise: Carbon Compounds and Polymer PropertiesThe smaller molecules used to make it are called monomers. When monomers join, they contribute repeating units to the polymer; a repeating unit is part of the finished chain, not a separate molecule trapped inside it.
