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chemical changes

what is metal oxides

metal + oxygen

oxidation ?

metal gains oxygen

reduction ? oxidation ?

reduction = loss of oxygen
oxidation = gain of oxygen

what does it mea nby displacement

more reactive metal and displace less reactive metal

how is metal less reactive than carbon obtained

by reduction with carbon

OIL RIG

oxidation is loss of electron and reduction is gain of electorn

acid + metal

salt and hydrogen

what is ment by redox reaction

one substance is reduced another substance is oxidised

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