Question

Describe briefly the ionic concept of oxidation and reduction?

Answer 1

The reaction in which oxygen combines with an element or hydrogen
is lost from an element is called oxidation reaction.
( C + O2 = CO2 )

The reaction in which hydrogen combines with an element or oxygen is from
an element is called reduction reaction



Hope this helps .....

Answer 2

addition of oxygen is called oxidation.
addition of hydrogen is called reduction