Oxidized

The old coins had turned green due to oxidized copper.

The oxidized battery couldn't power the remote control anymore.

The oxidized oil in the engine caused it to overheat.

The oxidized apples had a sour taste and were no longer edible.

The oxidized copper wires caused an electrical short circuit.

The oxidized silver jewelry tarnished over time.

The oxidized oil in the engine caused it to run less efficiently.