Chem - Iron Flashcards
1
Q
Rusting happens when metal make in contact with
A
Water + Oxygen (air)
2
Q
Result of rust
A
Hydrated Iron Oxide
3
Q
Two main ways to prevent rusting
A
Barrier and sacrificial
4
Q
Example of barrier methods
A
- Painting/coating w plastic
- Oiling/Greasing
5
Q
Example of Sacrificial method
A
- Zinc often used (more reactive than iron)
- Coating of zinc (galvanizing)
- Big blocks of zinc
