metal ores

what are metal ores?
it is a rockthat contains enough of a metal to make its extraction economical
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what is oxidation?
it is the gainof oxygen by a substance, for example magnesium would become magnesium oxide
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what is reduction?
it is the loss of oxygen by a substance for example zinc oxide would become zinc
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which metal is more resistant to corrosion- calcium or copper?
copper is more resistant to corrosion because it is lower in the reactivety series
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when do metals corrode?
metals corrode when they react with substances around them such as air and water,
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Other cards in this set

Card 2

Front

what is oxidation?

Back

it is the gainof oxygen by a substance, for example magnesium would become magnesium oxide

Card 3

Front

what is reduction?

Back

Preview of the front of card 3

Card 4

Front

which metal is more resistant to corrosion- calcium or copper?

Back

Preview of the front of card 4

Card 5

Front

when do metals corrode?

Back

Preview of the front of card 5

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