Corrosion and Rusting Flashcards
1
Q
What is corrosion?
A
A reaction that happens on the surface of a metal when the metal reacts with substances from the air or water around it.
2
Q
What is rusting?
A
The corrosion reaction of iron. Oxygen and water are needed for iron to rust.
3
Q
Product of rusting
A
Hydrated iron oxide
4
Q
Ways to prevent rusting
A
Painting Electroplating Oiling Sacrificial protection Galvanizing Plastic coating
5
Q
What is sacrificial protection?
A
Attaching blocks of magnesium or zinc to the iron because they are more reactive than iron meaning they corrode first
6
Q
What is galvanizing?
A
Coating with zinc
