Disposal of addition polymers
2 marks · NormalGive one reason why it is difficult to break addition polymers down in the environment. Suggest one way the environmental impact of waste plastics can be reduced.
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Also accept: Reason: strong covalent bonds/chemically inert/non-biodegradable; Way: recycling, burning to generate energy, using biodegradable alternatives
Common mistakes: Suggesting composting; Giving reasons unrelated to chemical structure
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Marking points
B1 · 1 mark · Reason: Identifies strong covalent bonds/chemical inertness/non-biodegradability.
B2 · 1 mark · Way: Names a valid method to reduce impact (e.g., recycling, incineration, biodegradable polymers).
Worked solution
Addition polymers have strong covalent bonds, so they do not react easily or break down naturally.
One way to reduce their environmental impact is to recycle waste plastics instead of sending them to landfill.