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2017-01-17T00:31:24Z
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Where do metals come from?
Why don't we find gold in an ore?
Which metal oxides can we use carbon to extract the metal from?
Which metals cannot be extracted using carbon?
How do we extract iron from iron ore?
Why is pure iron not very useful?
What are alloys?
What are the important examples of steels?
Why are aluminium and titanium so useful?
What method is used to extract metals that are more reactive than carbon?
Why are aluminium and titanium so expensive to extract?
How is copper obtained from copper-rich ores?
What methods can be used to obtain copper from low-grade ores?
How is copper purified?
What are transition metals?
Why are transition metals so useful?
Why is copper such a useful metal?
Why are alloys more useful than pure metals?
