C1 3.4 Extracting Copper

Front 1

Describe how to extract copper from copper-rich ores by smelting.

Back 1

Copper can be extracted from copper-rich ores by heating them in a furnace.
The copper is then purified using a process called electrolysis.

Front 2

Name the process used to purify copper.

Back 2

Electrolysis.

Front 3

Describe hoe copper can be extracted from low-grade ores by phytomining.

Back 3

We are running out of copper-rich ores, Phytomining: Some plants absorb copper compounds through their roots, The plants can be burned to produce an ash that contains the copper compounds.

Front 4

Explain why low-grade ores are now being exploited.

Back 4

We are running out of copper-rich ores and need new ways to extract copper

Front 5

Describe how copper can be extracted from low-grade ores by bioleaching

Back 5

Bioleaching: Some bacteria absorb copper compounds. They then produce solutions called leachates, which contain copper compounds.

Front 6

Describe how copper can be extracted from a solution by displacement.

Back 6

Copper can be extracted from solutions of copper salts using scrap iron. Iron is more reactive than copper, so it can displace copper from copper salts. For example:
iron + copper sulfate → iron sulfate + copper

Front 7

Describe how copper can be extracted from a solution by electrolysis

Back 7

Copper can be extracted from its ore by heating it with carbon