Day 225 of 365
August 13
C
Chemistry The Chemistry of Rust
Rust is iron oxide formed when iron reacts with oxygen and water. Unlike aluminum oxide, which forms a protective layer, rust is porous and allows corrosion to continue. This costs economies billions annually. Galvanization and paint help protect iron from rusting.
Did you know?
The Statue of Liberty was once copper-colored - its green patina is actually a form of rust!
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