4.5 - separating metals from metal oxides

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6 Terms

1
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what is oxidation?

gaining of oxygen

2
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what is reduction?

loss of oxygen

3
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why are metals like gold often found in the pure form?

they are too unreactive to react with oxygen and form a metal oxide

4
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how can you extract pure metals from their ores?

reacting them with carbon to form CO2 and leave behind the pure metal

5
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what metals can be extracted using carbon?

iron, zinc, copper

6
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why can only these metals be extracted using carbon?

they are less reactive so can be displaced by carbon