Extracting Metals

Question 1

What is meant by an ore?

Answer 1

A rock or a mineral.

Question 2

What are the three main ores and what metal compound do they contain?

Answer 2

Malachite-copper carbonate

Bauxite- aluminium oxide

Haematite- iron oxide

Question 3

How are the metals above carbon in the reactivity series extracted ?

Answer 3

By electrolysis

Question 4

How are metals below carbon extracted?

Answer 4

Through displacement of metals.

Question 5

Why are metals such as calcium extracted by electrolysis and metals like copper extracted through the process of displacement?

Answer 5

Because electricity is expensive so cheaper methods are used on the metals below carbon through displacement whereas metals like calcium cannot be extracted through displacement as it is more reactive than carbon.

Question 6

What are the two stages of the extraction of copper?

Answer 6

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Question 7

What metal becomes oxidised and what metal reduces during the process of extraction?

Answer 7

.

Question 8

How can you reduce copper oxide by charcoal?

Answer 8

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