(a) Define corrosion.
(b) What is corrosion of iron called?
(c) How will you recognise the corrosion of silver?
(d) Why corrosion of iron is a serious problem?
(e) How can we prevent corrosion of iron?
Answers
Answer:
a)Corrosion is a natural process that converts a refined metal into a more chemically stable form such as oxide, hydroxide, or sulfide. It is the gradual destruction of materials by chemical and/or electrochemical reaction with their environment.
b) rusting
The corrosion of iron, better known as rusting, is an oxidation-reduction process that destroys iron objects left out in open, moist air.
c) Corrosion of iron is a serious problem because it leads to wastage of tonnes of iron every year and lot of money is spent to repair or replace it.
d) One way to keep iron from corroding is to keep it painted. The layer of paint prevents the water and oxygen necessary for rust formation from coming into contact with the iron. As long as the paint remains intact, the iron is protected from corrosion. Other strategies include alloying the iron with other metals.
Define corrosion.
Corrosion is a natural process that converts a refined metal into a more chemically stable form such as oxide, hydroxide, or sulfide. It is the gradual destruction of materials by chemical and/or electrochemical reaction with their environment.
What is corrosion of iron called?
Rusting is the common term for corrosion of iron and its alloys, such as steel. Many other metals undergo similar corrosion, but the resulting oxides are not commonly called rust.
How will you recognise the corrosion of silver?
The corrosion of silver can be easily recognized by the blackish layer of silver sulphide that covers the surface of the silver metal. Silver reacts with Sulphur to form silver sulphide that corrodes the metal. The original silver metal can be re obtained by removing the layer of silver sulphide
Why corrosion of iron is a serious problem?
Fe reacts with the moisture and oxygen content in air to form iron oxides. The engineering properties (strength, hardness) decreases proportionally with the magnitude of corrosion. Hence, the stability of the structure decreases, a serious phenomenon. ...
How can we prevent corrosion of iron?
One way to keep iron from corroding is to keep it painted. The layer of paint prevents the water and oxygen necessary for rust formation from coming into contact with the iron. As long as the paint remains intact, the iron is protected from corrosion. Other strategies include alloying the iron with other metals.