Chemistry C1 3.4 Extracting copper.

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Where and how is most copper extracted?
Most copper is extracted from copper-rich ores by smelting.
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How can copper be purified?
Copper can be purified by electrolysis.
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What are new ways to extract copper from low-grade ores?
Bioleaching and phytomining.
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How can copper be obtained from solutions of copper salts?
By displacement or electrolysis.
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What is smelting?
Heating the ore strongly in a furnace.
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How can the impure copper produced by smelting be purified?
By electrolysis.
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How is smelting and purifying copper ore expensive?
It requires huge amounts of heating and electricity.
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Why are scientists developing new ways of extracting copper from low-grade ores?
Copper-rich ores are a limited resource, methods that scientists are developing can have less environmental impact than smelting.
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How does phytomining work?
Phytomining uses plants to absorb copper compounds from the ground, the plants are burned and produce ash from which copper can be extracted.
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How does bioleaching work?
Bioleaching uses bacteria to produce solutions containing copper compounds.
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Why are new ways of extracting copper being researched?
High-grade ores are limited or funning out, also to reduce environmental impacts.
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Wha three ways can be used to produce copper metal from its compounds?
Smelting, electrolysis and displacement.
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How can copper be extracted from its compounds using another metal?
Solutions of copper compounds can be reacted with a metal that is more reactive than copper, such as scrap iron, to displace the copper.
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How else can copper be extracted from solutions of copper compounds?
Using electrolysis.
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***LOOK UP DIAGRAMS OF EXTRACTING COPPER ETAL USING ELECTRICITY***
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Card 2

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How can copper be purified?

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Copper can be purified by electrolysis.

Card 3

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What are new ways to extract copper from low-grade ores?

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Card 4

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How can copper be obtained from solutions of copper salts?

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Card 5

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What is smelting?

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