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2 marksStates of Matter

CSEC Chemistry · May/June 2015 · Paper 2 · Question 2(a)(iv)

Water exists in three states of matter, while iodine exists in two.

Describe how the energy of the iodine particles changes as iodine undergoes the process mentioned in (a)(iii) above.

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Other parts of this question

  1. 2(a)(i)List the THREE states of matter in which water exists.[1 mark]
  2. 2(a)(ii)Describe the strength of the forces of attraction present between the particles in EACH of the three states you have mentioned in (a)(i) above.[3 marks]
  3. 2(a)(iii)When heated, iodine changes from one state into another. What is this process called?[1 mark]
  4. 2(b)Using appropriate diagrams, illustrate how the bonding in solid sodium chloride differs from that of diamond.[4 marks]
  5. 2(c)Describe TWO tests that are performed in the laboratory to distinguish between an 'ionic solid' and a 'molecular solid'. Suggest how the results of the tests…[4 marks]

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