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6 Cards in this Set
- Front
- Back
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What are the properties of CFCs? |
Non-flammable and not very toxic |
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Why are HCFCs better for the ozone layer? |
They're less stable and so decompose lower in the atmosphere |
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What polymers do halogeonalkenes make? |
Polymers such as PVC and PTFE from poly(chloroethene) and poly(tetrafluoroethene) |
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What are CFCs? |
Halogenoalkanes where all the hydrogens have been replace with fluorine and chlorine |
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How are halogenoalkanes used to prevent fires? |
They lie on top of the flames and do not burn, so they exclude oxygen from the fire and it goes out |
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Why are halogenoalkanes good refrigerants? |
They are easily compressed and don't corrode pipework |
