Rust forms when oxygen reacts with iron, but simply putting iron and oxygen together isn't sufficient. Although about 21% of air consists of oxygen,1 rusting doesn't occur in dry air. It occurs in moist air and in water. Rust requires three chemicals in order to form: iron,oxygen, and water
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Rust forms when oxygen reacts with iron, but simply putting iron and oxygen together isn't sufficient. Although about 21% of air consists of oxygen,1 rusting doesn't occur in dry air. It occurs in moist air and in water. Rust requires three chemicals in order to form: iron,oxygen, and water
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