Alkenes can be used to make polymers.
This means joining together lots of monomers to form very large molecules, long chain molecules are called polymers.
Ethene molecules can be joined up to produce polyethene. They open up their double bonds.
Polyethene is stretchy so it can make plastic bags to hose pipes.
If you join lots of propane together, you have polypropene that is tough and can be used as carpets to plastic containers.
Chloroethene molecules together, pvc, flexible and resistant to wear so it can do clothing, pipes.
Tetrafluoroethene becomes polytetrafluoroethene, ptfe, interactive, flame resistant so it's used as non - stick coating for pans.
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