How does corrosion affect metals like copper and silver?

Copper and silver are generally more resistant to corrosion than iron. Copper develops a protective layer of greenish-brown copper oxide (patina) over time, which acts as a barrier against further corrosion. However, exposure to certain environments can cause copper to corrode, forming green or blue-green compounds. Silver, while resistant to atmospheric corrosion, can tarnish when exposed to sulfur compounds, forming a dark layer of silver sulfide. Corrosion on copper and silver alters their appearance but may not compromise their structural integrity as significantly as it does with more reactive metals like iron. Preventive measures and proper maintenance can minimize corrosion effects.