Quelpr
1 markUses of Metals

CSEC Chemistry · January 2002 · Paper 2 · Question 4(c)(i)

Give ONE reason why aluminium, and NOT iron, is used in the making of aircrafts.

The mark scheme is shown once you've answered.

Practise this question

Other parts of this question

  1. 4(a)Identify the more feasible route for the extraction of magnesium and zinc from their oxides, giving a reason for each choice.[4 marks]
  2. 4(b)(i)Why is the conventional process uneconomical for refining bauxite in the Caribbean?[2 marks]
  3. 4(b)(ii)Why is the Alcoa chlorine approach a more economical process for refining bauxite?[3 marks]
  4. 4(c)(ii)Explain why iron rusts and aluminium does not rust, supporting your answer with suitable balanced equations.[10 marks]
  5. 4(a) [P2]Write a balanced equation for the reaction between hydrochloric acid and marble chips.[2 marks]
  6. 4(b)(i) [P2]Use data from the graph to determine the total volume of carbon dioxide evolved.[2 marks]
  7. 4(b)(ii) [P2]Determine the mass of carbon dioxide evolved.[1 mark]
  8. 4(b)(iii) [P2]Determine the mass of marble chips used.[2 marks]
  9. 4(c) [P2]How would you show that the gas produced is carbon dioxide?[2 marks]
  10. 4(d) [P2]Explain why nitric acid and NOT sulphuric acid could be used to replace the hydrochloric acid used in the investigation.[2 marks]
  11. 4(e) [P2]Explain why the graph has the shape shown.[2 marks]
  12. 4(f) [P2]Suppose that this experiment were to be repeated using calcium carbonate powder in place of marble chips, would you expect it to be completed in a shorter or…[2 marks]

More practice: the rest of this paper · more Uses of Metals questions · all CSEC Chemistry past papers