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1 markStates of Matter

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

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

List the THREE states of matter in which water exists.

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  1. 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]
  2. 2(a)(iii)When heated, iodine changes from one state into another. What is this process called?[1 mark]
  3. 2(a)(iv)Describe how the energy of the iodine particles changes as iodine undergoes the process mentioned in (a)(iii) above.[2 marks]
  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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