Macromolecules

Question 1

What is polymerisation

Answer 1

small molecules ( monomers ) combine together to form a large molecule
( macromolecule ) ; a polymer

Question 2

Addition polymerisation

Answer 2

no elimination of simple molecules

Question 3

• Poly( ethene )
• Polythene

Answer 3

• simplest addition polymer
• ethene monomers

Question 4

Uses of polythene

Answer 4

• plastic bags
• plastic bottles
• toys
• buckets
• clingfilm

Question 5

• Poly( chloroethene )
• Poly( vinylchloride )
  -> PVC

Answer 5

chloroethene / vinyl chloride molecules

Question 5

Uses of PVC

Answer 5

• water pipes
• insulator for electric cables
• waterproof plastic sheets

Question 5

Poly( propene )

Answer 5

• propene molecules
• hard plastic

Question 5

Uses of poly( propene )

Answer 5

• making of crates
• other hard plastic materials

Question 5

• Poly( styrene )
• Poly( phenylethene )

Answer 5

monomer is styrene
( phenylethene )

Question 6

Condensation polymerisation

Answer 6

elimination of simple molecules occurs

Question 7

Nylon

Answer 7

• 1 dicarboxylic acid
• 1 diamine ( amino group )

Question 8

Uses of nylon

Answer 8

• clothing industry
• nets

Question 9

Polyethylene terephthalate
-> PET

Answer 9

• 1 dicarboxylic acid
• 1 diol

Question 10

Uses of PET

Answer 10

• fibre for clothing & furniture
• bottles for drinks & foods
• to make carpets, fire & garden hoses, seat belts

Question 11

Synthetic polymers

Answer 11

man-made polymers made in laboratories

Question 12

Natural polymers ; examples

Answer 12

• proteins
• fats
• carbohydrates

Question 13

Proteins

Answer 13

• N, C, O, H
• polypeptides / polyamides
• amino acid monomers
• amino group
• carboxylic group
• hydrolysed by boiling them with an acid / alkali