Corrosion Flashcards
1
Q
What is corrosion?
A
The reaction of metal with substances in the surrounding such as air and water.
2
Q
When is the only time that silver will corrode?
A
.
3
Q
When does hydrogen sulfide react with silver?
A
In the presence of water and oxygen.
4
Q
What is the substance that is formed in the surface of silver?
A
Thin layer of black silver sulfide Ag2S
5
Q
What are the only unreactive metals ?
A
Gold and platinum
6
Q
What is it called when iron and steel erode?
A
Rusting
7
Q
What reaction is rusting ?
A
.
8
Q
What conditions are needed for rusting ?
A
Water and oxygen
9
Q
What happens when aluminium reacts with oxygen?
A
.
10
Q
What happens to the surface of iron when it rusts ?
A
.
