Correct, ethene - polyethene, propene - polypropene, tetrafluoroethene - polytetrafluoroethene, poly(styrene) - styrene, polyvinylchloride - vinylchoride, Incorrect, ethene - ethenepoly, tetrafluoroethene - polyteflon, propene - poly(ethene), urethane - polyurea, polypocket - rocket.

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