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2 marksStructure and Bonding

CSEC Chemistry · May/June 2019 · Paper 2 · Question 4(a)(i)

You are provided with two identical samples of white powdery substances labelled D and E. One sample is finely ground sodium chloride and the other sample is finely ground diamond.

Describe ONE simple test, including the observations, which could be used to distinguish between D and E.

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Other parts of this question

  1. 4(a)(ii)Sketch a unit cell of sodium chloride.[3 marks]
  2. 4(a)(iii)State the type of bonding that occurs in sodium chloride.[1 mark]
  3. 4(b)(i)Discuss the relative reactivity of Mg, Ca and X with water.[2 marks]
  4. 4(b)(ii)Write a balanced chemical equation for the reaction between water and the unknown element (X).[2 marks]
  5. 4(c)(i)Suggest a formula for this compound.[1 mark]
  6. 4(c)(ii)State whether an aqueous solution of this compound would be acidic or basic and give ONE reason for your answer.[3 marks]
  7. 4(c)(iii)State ONE test to determine if an aqueous solution of this compound is acidic or basic.[1 mark]

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