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2 marksMetals, Non-Metals and Corrosion

CSEC Integrated Science · 2006 · Paper 2 · Question 1(b)(iii)

A family moves to a new home by the beach, and the hinges of their metal gate begin to rust within two months.

Explain why rusting of the gate has occurred so rapidly.

The mark scheme is shown once you've answered.

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Other parts of this question

  1. 1(a)(i)Complete the word equation for the reaction: Aluminium + hydrochloric acid ->[1 mark]
  2. 1(a)(ii)Complete the word equation for the reaction: Iron + water ->[1 mark]
  3. 1(b)(i)Name the chemical process by which rusting takes place.[1 mark]
  4. 1(b)(ii)Write a word equation for the formation of rust.[1 mark]
  5. 1(c)(i)State which of the three materials is likely to have been used in the windows of the bedroom.[1 mark]
  6. 1(c)(ii)State which of the three materials is likely to have been used in the windows of the kitchen.[1 mark]
  7. 1(c)(iii)Give reasons for your answers in (c)(i) and (c)(ii).[2 marks]
  8. 1(d)(i)Suggest what might have been responsible for the respiratory ailments.[1 mark]
  9. 1(d)(ii)Suggest what might have been responsible for the decline in frequency of the respiratory ailments.[1 mark]
  10. 1(e)(i)Using the experimental results in Table 1, write the metals in order of increasing activity.[1 mark]
  11. 1(e)(ii)Y is non-reactive in hydrochloric acid. Suggest the name of ONE metal which is non-reactive in hydrochloric acid.[1 mark]
  12. 1(e)(iii)Why was the same volume (5 cm³) of hydrochloric acid added to EACH of the three metals?[1 mark]

More practice: the rest of this paper · more Metals, Non-Metals and Corrosion questions · all CSEC Integrated Science past papers