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5 marksNon-Metals

CSEC Chemistry · January 2013 · Paper 2 · Question 5(a)(ii)

Carbon is moved through living systems via the carbon cycle, as shown in Figure 4, with processes labelled X, Y and Z.

Describe the process occurring at Z and explain ONE harmful effect that could occur as a result of this process. Write ONE balanced equation to support your answer.

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Other parts of this question

  1. 5(a)(i)Outline how processes X and Y move carbon through the cycle.[2 marks]
  2. 5(b)(i)a)Write a suitable equation for the action of heat on the carbonate of R[2 marks]
  3. 5(b)(i)b)Write a suitable equation for the reaction between M and aqueous aluminium ions.[2 marks]
  4. 5(b)(ii)Explain why M is more reactive with dilute acid than R.[2 marks]
  5. 5(b)(iii)State ONE physical and ONE chemical property that both M and R are likely to share.[2 marks]

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