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Question 1

what is a polymer?

Answer 1

a substance of high average relative molecular mass made up of small repeating units

Question 2

what are the properties and uses of poly(ethene)?

Answer 2

properties :
—> flexible
—> cheap
—> electrical insulator

uses :
—> plastic bags
—> coating on electrical wires

Question 3

what are the properties and uses of poly(propene)?

Answer 3

properties :
—> flexible
—> strong

uses :
—> buckets
—> crates

Question 4

what are the properties and uses of poly(chloroethene) or PVC?

Answer 4

properties :
—> tough
—> cheap
—> long lasting

uses :
—> window frames

Question 5

what are the properties and uses of poly(tetrafluoroethene) or PTFE

Answer 5

properties :
—> tough
—> non-stick

uses :
—> non-stick coating on pans

Question 6

what happens in condensation polymerisation?

Answer 6

a small molecule is formed as a by-product each time a bond is formed from two monomers

Question 7

why are polyesters a condensation polymer?

Answer 7

alcohol and carboxylic acids functional groups react. they lose a small molecule —> water
( OH + H —> H2O )

Question 8

what are the advantages and disadvantages of recycling polymers?

Answer 8

advantages :
—> reuse waste materials and is better for environment
—> saves crude oil

disadvantages :
—> difficult and expensive to first separate the different polymers

Question 9

what are the monomers in starch?

Answer 9

sugars

Question 10

what are the monomers in DNA?

Answer 10

nucleotides

Question 11

what are the monomers in proteins?

Answer 11

amino acids