10.1 The mining industry contributes towards the South African economy. Gold is one of the minerals that is being mined in South Africa.
10.1.1 Write down the name of the location of the major mining activity in South Africa. (1)
The following chemical reaction occurs during the final steps in the recovery process of gold.
10.1.2 Is gold OXIDISED or REDUCED during the reaction?
Explain the answer by referring to the oxidation number. (3)
10.1.3 The NaCN is one of the products formed in the reaction.
Give a reason why chemists MUST ensure that NaCN does not find its way to nearby water sources. (2)
10.1.4 Write down the name of the process that is followed after this reaction. (1)
10.2 The burning of fossil fuels has a negative impact on the environment.
Write down TWO negative impacts of the large-scale burning of fossil fuels. (2)
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TOTAL: 150