Disposal of addition polymers
3 marks · EasyDescribe what is meant by the term 'biodegradability'.
Explain why addition polymers like poly(chloroethene) are not biodegradable.
Suggest one way to reduce the environmental impact of waste addition polymers.
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(a) Ability to be broken down by living organisms or bacteria.
(b) Because their strong covalent bonds make them resistant to attack by bacteria.
(c) Recycle them, or use less plastic.
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Marking points
B1 (a) · 1 mark · Describes biodegradability as breakdown by bacteria or living things.
B1 (b) · 1 mark · Explains polymers are not biodegradable due to their bonds or being inert.
B1 (c) · 1 mark · States a valid way to reduce impact, e.g. recycling, using alternatives, reducing use.
Worked solution
a: Biodegradability means the ability to be broken down by living organisms like bacteria.
b: Addition polymers are not biodegradable because their structure (strong covalent bonds) is not attacked by bacteria.
c: By recycling plastics or using less plastic, we reduce their environmental impact.