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When does rust form?
When Iron and Oxygen mix. This happens easier in water than air because air is only about 27% oxygen and water is around 33% oxygen.
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What forms rust?
Iron, when it oxidizes.
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How does rust form and where?
Rust is the oxidation of iron. When something made from iron is exposed to oxygen (a gas in the air) it bonds with it. The process of something combining with oxygen is called "oxidation". Once the...
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What is rust and how does it form?
Rust is oxidized iron and occurs when oxygen chemically reacts with iron
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How quick does rust form?
Instant surface rust, much like bare aluminum gets oxydized immidiately.