Rust
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Rust needs iron, water, and oxygen to form. Here's how: | Rust needs iron, water, and oxygen to form. Here's how: | ||
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Iron is rarely found in pure form, because it combines so readily with oxygen. There are 16 known iron oxides. | Iron is rarely found in pure form, because it combines so readily with oxygen. There are 16 known iron oxides. | ||
ref this: http://en.wikipedia.org/wiki/Corrosion | ref this: http://en.wikipedia.org/wiki/Corrosion | ||
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