6. Polymers can be made from alkenes - Edexcel - GCSE Chemistry - Question 6 - 2013 - Paper 1
Question 6
6. Polymers can be made from alkenes.
(a) Which of the following statements about alkenes is correct?
Put a cross (✗) in the box next to your answer.
☐ A alkenes t... show full transcript
Worked Solution & Example Answer:6. Polymers can be made from alkenes - Edexcel - GCSE Chemistry - Question 6 - 2013 - Paper 1
Step 1
Which of the following statements about alkenes is correct?
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Answer
The correct statement is:
C alkenes are unsaturated hydrocarbons.
Alkenes contain at least one carbon-carbon double bond, which distinguishes them from alkanes that only have single bonds.
Step 2
The table shows two monomers and the polymers they form.
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Answer
monomer structure
name of polymer formed
polymer structure
H H
poly(ethene)
H H
C == C
poly(propene)
H H
H H
Step 3
Explain a problem caused by the disposal of polymers.
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Answer
Polymers are often non-biodegradable, meaning they can persist in landfill sites for extended periods. This can lead to accumulation of waste and environmental pollution, as they do not decompose naturally.
Step 4
Explain the properties required of a good fuel.
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Answer
A good fuel should have several important properties:
Ignite easily: It should catch fire quickly to enable a rapid energy release.
Burn easily: The fuel should sustain combustion once ignited, producing heat efficiently.
Release sufficient heat energy: When burnt, it must deliver a high amount of energy for effective use.
Be safe to store and transport: The fuel should be stable, minimizing risks during handling.
Be convenient and economical: It should be readily available and cost-effective for users.
