Why does iron gets rusty?

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Why does iron gets rusty? by Mind Map: Why does iron gets rusty?

1. The presence of sodium will speed up rusting process

2. Rust occurs when oxygen combines with metal at an atomic level

3. Paint or chemicals can be used to prevent rusting

4. Rust is an oxidation process

5. The main catalyst for rust is water

6. Rust can cause the iron to be weakened

7. Rust is reddish in colour

8. In iron, rust is a compouind called iron oxide, aka red oxide