Is the melting of ice a physical change or a chemical change?

The melting of ice is a physical change, a change from the solid phase to a liquid phase by adding heat energy. The water can be refrozen into ice again, because it is the same chemical compound, H2O.

Melting does not change the chemical elements in the ice (water), only their molecular form.
Frozen water turns to liquid water. It is still water, so melting would be a physical change.