Answer:
A polymer is a large molecule made by linkino together
repeating units of small molecules called monomers. The process of linking them
up is called polymerisation.
[1]
Type
Characteristic
Example
(i)
Linear polymers
Have long and straight chains, have high density
Polythene, polyvinyl chloride (PVC) [1]
(ii)
Branched chain polymers
Have linear chains with some branches, have low density
[1]
(iii)
Cross-linked or Network polymers
Formed from monomers with two and three functional
groups; have strong covelent bonds
Bakelite melamine
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