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