Have you ever seen that black, grimy film on an old spoon? That’s tarnish. Chemically speaking, it’s silver sulfide.
Your spoon is a drama queen. It reacts with sulfur in the air. Sulfur is in eggs, onions, and even your own farts (yes, really). The silver grabs the sulfur and turns dark, like a chemical selfie gone wrong.
This reaction is called oxidation. It’s a slow, beautiful, smelly dance. The spoon is literally reacting to your kitchen vibes.