Which of the listed phenomena are physical and why? a) ice melting; b) rusting of an iron nail;

Which of the listed phenomena are physical and why? a) ice melting; b) rusting of an iron nail; c) melting of aluminum; d) boiling water; e) oil rancidity during long-term storage; f) melting the wax.

Physical phenomena are those in which various changes occur with the body (state of aggregation, shape, size, quantity, movement in space, and others) that do not affect the composition of the substances that form it.
For example:
– ice melting (water changes its state of aggregation from solid to liquid);
– melting of aluminum (aluminum metal changes its state of aggregation from solid to liquid);
– boiling of water (change in water temperature, but not in the composition of molecules);
– wax melting (change of state of aggregation).