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5 marksImpact of Metals on Living Systems and the Environment

CSEC Chemistry · May/June 2018 · Paper 2 · Question 6(a)(i)

Many important biological processes in plants and animals depend on the specific roles of certain metal ions. Farmer Jones reaped a crop of tomatoes and reported that the yield was far below what was expected. Analysis of the soil revealed that there was a deficiency of magnesium.

Discuss the importance of magnesium in plant health, and explain how a magnesium deficiency can result in the low yield of tomatoes.

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  1. 6(a)(ii)State ONE other metal ion which is important to plant health and state the result of its deficiency.[2 marks]
  2. 6(b)Identify ONE metal and ONE nonmetal whose compounds were present in car exhaust fumes. Discuss the effect of these compounds on human health and the…[5 marks]
  3. 6(c)Define 'green chemistry' and discuss the measures that have been taken to produce a 'greener' automotive fuel.[3 marks]

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