What do we know about rust?

1. It was the cause of the collapse of the Mianus river bridge in 1983 and in the Silver Bridge disaster of 1967 in West Virginia.

2. How does metal rust?

2.1. When iron reacts with oxygen it forms a new compound called rust

3. What damage did rust cause?

4. What and how can it speed up rusting?

4.1. Salt.The iron oxide which is formed is porous and bulky which allows iron and oxygen to further react causing more oxidation.

5. It is a general term for a series of iron oxides and is the main chemical causes of bridge disasters.

6. What is rust?