Ecz Science gce grade 12 2016 paper 3
Section B
[20 MARKS]
Answer any two questions
Copper is extracted from one of the ores, copper pyrites, CuFeS2- The copper pyrites is first converted to copper (I) sulphate before copper metal is produced.
- Write down the aquations leading to the formation of copper metal from
copper pyrites. [2]
- Explain why this extraction leads to air pollution. [1]
State the process used to purify copper. [1]
State any two large scale uses of copper and give reasons why copper
used in that way. [4]
(i) Copper occurs ‘native’ in some countries such as Zambia,
slain what is meant by the word ‘native’. [1]
Begone alloy made from copper metal, [1]
[Total 10]
