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4 marksPolymers

CSEC Chemistry · January 2010 · Paper 2 · Question 6(c)(i)

Fibres are abundant in nature and produced by both plants and animals.

Name ONE plant fibre and ONE animal fibre used in making fabric, and state the chemical composition of plant fibres and animal fibres.

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Other parts of this question

  1. 6(a)(i)Describe the chemical composition of clay.[1 mark]
  2. 6(a)(ii)Suggest a possible source of 'glass' in fired clay.[1 mark]
  3. 6(a)(iii)Relate this use of clay to ONE of its properties.[2 marks]
  4. 6(b)From your knowledge of the composition of cement and its use in making concrete, explain the reason for the mason's advice.[3 marks]
  5. 6(c)(ii)Suggest TWO chemical tests which may be used to distinguish an animal fibre from a plant fibre. Include the expected observations.[4 marks]

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