Corrosion and Electrolysis: Electricity Meets Chemistry

Corrosion is the slow breakdown of metals, usually by reacting with oxygen and water.
Rust on iron is the most familiar form of corrosion, an electrochemical process.
Corrosion is basically a tiny, unwanted battery forming on a metal’s surface.
Protective coatings, like paint or galvanization, block corrosion by stopping reactions.
Electrolysis is the opposite—using electricity to drive chemical reactions.
Splitting water into hydrogen and oxygen gases is a classic example of electrolysis.
Electrolysis also extracts metals like aluminum from ores on an industrial scale.
Electroplating uses electrolysis to coat objects with metals like gold or chrome.
Both corrosion and electrolysis involve electron flow, but one is destructive, the other useful.
Together, they show how electricity and chemistry constantly shape the materials around us.