chemistry - separate chemistry 2: polymers (9.17 - 9.25)

9.17 polymer - mass, made of

substance of high average relative molecular mass

made up of small repeating units

9.18 ethene molecules combining - type of reaction, product

ethene molecules (monomers) combine together in polymerisation reaction (addition polymerisation)

addition polymer formed called poly(ethene)

9.19 how is addition polymer poly(propene) made?

propene monomer molecules combine together

9.19 how is addition polymer poly(chloroethene) (PVC) made?

chloroethene monomer molecules combine together

9.19 how is addition polymer poly(tetrafluoroethene) (PTFE) made?

tetrafluoroethene monomer molecules combine together

9.20