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13 Cards in this Set
- Front
- Back
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What is the difference between a monomer and a polymer? |
A monomer has one unit whilst a polymer has many units. |
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This is ethene. Describe the structure of polyethene. |
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This is vynal chloride. Describe the structure of polyvynalchoride (PVC) |
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This is propene. Describe the structure of polypropene. |
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Complete this sentence. 'N' is number of ethenes makes _________ number of polyethene. If n was 2000, then 2000 _______ molecules would make a polyethene molecule with 2000 ________________. |
n ethene repeat unit |
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True of false. There are double bonds in polymers. |
False Polymers are saturated hydrocarbons. |
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What is an addition polymer? |
a polymer formed from monomers added together where no other substance is produced |
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Name the uses of at least 3 polymers. |
Polyethene: plastics Polystyrene: polystyrene PVC: plastics, plastic bags, windows, pipes Polyvynal alcohol: PVA glue Orlon/Acrilan: clothing fibres Teflon/Polytetrafluoroethene: non stick cooking ware |
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Why are polymers hard to dispose of? |
Natural decomposers (e.g. bacteria) cannot break them down. |
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Describe condensation polymers. |
-2 functional groups required (acid and amine) -Makes a polymer and a small molecule (i.e. water) |
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Define thermoplastic. |
softens on heating |
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Define elastomer. |
Softens on heating and shows rubber like elasticity
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Define thermoset (resin). |
heated to 'cure' once only, will not melt |
