Rusting And Corrosion Flashcards
1
Q
What is needed for iron to rust
A
Water and oxygen
2
Q
What effect does salt have on rusting
A
Speeds it up
3
Q
Word equation for the rusting of iron
A
Iron+oxygen-> hydrated iron
(In presence of water)
4
Q
Barrier methods to prevent corrosion include what
A
Painting,oiling, plastic /rubber coating
5
Q
What is sacrificial protection method to prevent corrosion
A
Adding magnesium blocks to ships
6
Q
Galvanising prevents rust by
A
Coating in zinc creating a physical barrier between iron+air and water,
7
Q
Zinc does what with preference to iron
A
Zinc corrodes in preference to iron
