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2 marksMetals, Non-Metals and Corrosion

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

The kitchen windows have begun to rust, but the bedroom windows show no signs of rusting. Aluminium, steel, and plastic are three materials used to make windows.

Give reasons for your answers in (c)(i) and (c)(ii).

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(b)(iii)Explain why rusting of the gate has occurred so rapidly.[2 marks]
  6. 1(c)(i)State which of the three materials is likely to have been used in the windows of the bedroom.[1 mark]
  7. 1(c)(ii)State which of the three materials is likely to have been used in the windows of the kitchen.[1 mark]
  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]

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