5.3 Prevention of rusting Flashcards
(3 cards)
1
Q
Rusting
A
the corrosion of iron
Iron + oxygen -> iron oxide + water
2
Q
How to prevent rusting
A
Rusting can be prevented by excluding oxygen and water by:
painting
coating with plastic
OR
using oil or grease
Aluminium has an oxide coating that protects the metal from further corrosion.
3
Q
Sacrificial protection
A
When the metal which needs to be protected from rusting is galvanised with a more reactive metal, which will rust first.
