Quelpr
3 marksStructure and Bonding

CSEC Chemistry · January 2013 · Paper 2 · Question 2(a)(iii)

A sample of solid sodium chloride (NaCl) was contaminated with iodine crystals (I₂). A student suggested separating iodine from sodium chloride by gently heating the mixture, as shown in Figure 3.

Using dot cross diagrams, show the bonding in NaCl.

This question uses a figure or table from the paper — you'll see it when you practise.

The mark scheme is shown once you've answered.

Practise this question

Other parts of this question

  1. 2(a)(i)State the name of the process being used in Figure 3 to separate the iodine from sodium chloride.[1 mark]
  2. 2(a)(ii)Describe what should be observed when the sample of NaCl and I₂ is heated.[3 marks]
  3. 2(a)(iv)By comparing the forces of attraction between the NaCl particles and the I₂ molecules, explain why gentle heating is suitable for separating I₂ from a mixture…[4 marks]
  4. 2(b)(i)State whether the method outlined in Figure 3 is suitable for separating the Fe from NaCl.[1 mark]
  5. 2(b)(ii)With reference to the bonding in Fe, explain your answer to (b) (i).[3 marks]

More practice: the rest of this paper · more Structure and Bonding questions · all CSEC Chemistry past papers