A rock that contains enough metal to make it worth extracting.
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How can metals be extracted from compounds by displacement?
The oxides of metal less reactive than carbon can be reduced using carbon.
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What are the diferent types of steels and what are their properties?
Low-carbon steels are easily shaped and high-carbon steels are hard. Stainless steels resist corrosionas they contain larger quanitites of other metals.
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Why does iron from a blast furnance only have a few uses?
Iron is too brittle to have any uses.
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How is iron made?
Iron oxide is reduced in a blast furnance to make iron.
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What is most iron converted into and why?
Iron is converted into the alloy steel because pure iron is too soft to have any uses whereas steel has many uses.
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What does steel contain?
A mixture of iron with carbon and other elements.
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What are the properties of aluminium and titanium?
They resist corrosion and have low densities compared to other metals.
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How is aluminuim and titanium extracted?
Aluminium is extracted by electrolysis of molten aluminuim oxide. Titanium is extracted when a more reactive metal like magnesium is used to extract it.
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Why is it expensive to extract aluminum and titanium from its ore?
Aluminium and titaminum are expensive to extract form its ores because it involves many stages and requires large amounts of energy.
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How is coppper extracted?
It is extracted by copper-rich ores by smelting (heating a metal ore in order to extract its metal).
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Why are new ways of extracting copper being researched?
Copper-rich ores are a limited resources and extracting copper from low-grade ores have less environmental impacts than smelting.
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What are the new ways to extract copper from low-grade ores?
Bioleaching (using bacteraia to produce solutions using copper compounds) and phytomining (using plants to absorb copper compounds from the ground).
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What 3 ways can be used to produce copper from its compounds?
Smelting, electrolysis(splitting compounds using electricity) and displacement(using a more reactive metal)
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Other cards in this set
Card 2
Front
The oxides of metal less reactive than carbon can be reduced using carbon.
Back
How can metals be extracted from compounds by displacement?
Card 3
Front
Low-carbon steels are easily shaped and high-carbon steels are hard. Stainless steels resist corrosionas they contain larger quanitites of other metals.
Back
Card 4
Front
Iron is too brittle to have any uses.
Back
Card 5
Front
Iron oxide is reduced in a blast furnance to make iron.
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