Answer:
A chemical change
Explanation:
A physical reaction is defined as the reaction in which a change in shape, size takes place. No new substance gets formed in these reactions. Example: melting of ice
A chemical reaction is defined as the reaction in which a change in chemical composition takes place.A new substance is formed in these reactions.
Decomposition of water using electric current to produce hydrogen and oxygen is called as electrolysis and is a chemical change.
