Why does iron gets rusty?

1. Rust is an oxidation process

2. The presence of sodium will speed up rusting process

3. Rust can cause the iron to be weakened

4. Rust is reddish in colour

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

6. Paint or chemicals can be used to prevent rusting

7. The main catalyst for rust is water

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