11 mark
The following molecule can undergo addition polymerisation.
What it the correct repeat unit?
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7.3 Synthetic & Natural Polymers
21 mark
Polyesters can be made by condensation polymerisation. Ethanediol can react with butanedioic acid (a carboxylic acid containing two -COOH groups) to make a polymer.
Which of the following is a correct repeat unit for this polymer?
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31 mark
How many functional groups are present in the amino acid alanine?
1
2
3
4
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41 mark
Which of the following is not true about DNA?
The structure is a double helix
DNA is made from nucleotides
DNA is made from two polymer chains
The monomers that form DNA are amino acids
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51 mark
What is the name and formula of the monomer that makes up starch and cellulose?
| Name | Formula | |
| A | fructose | C6H12O6 |
| B | glycine | H2NCH2COOH |
| C | glucose | C6H12O6 |
| D | sucrose | C12H22O11 |
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61 mark
The structure of a polymer is shown below.
What is the correct monomer?
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71 mark
Part of the chemical structure of a wool fibre is shown below.
What is true about the structure?
The structure is a carbohydrate
The structure is an addition polymer
The structure is a protein
Hydrogen has two covalent bonds in the chain
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