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what is oxidation?
the gain of oxygen/loss of electrons
what is reduction?
loss of oxygen/gain of electrons
what is the reactivity series from most to least reactive?
potassium
sodium
lithium
calcium
magnesium
aluminium
carbon
zinc
iron
tin
lead
hydrogen
copper
silver
gold
how can metals be extracted from compounds?
less reactive than carbon - reduced by carbon
more reactive than carbon - electrolysis