Question

(a) Explain the term “corrosion” with an example. Write a chemical equation to show the process of corrosion of iron.

(b) What special name is given to the corrosion of iron?

(c) What type of chemical reaction is involved in the corrosion of iron?

(d) Name any three objects (or structures) which are gradually damaged by the corrosion of iron and steel.

Answer 1

Answer:

" Corrosion is the degrading of materials due to reaction with it's environment."

Answer 2

Answer:

a. Corrosion is the process in which metals are attacked gradually by the substances around such as air, moisture or a chemical ( such as acid ) on their surface.

$4Fe + 3O2 + 2H2O= 2Fe2O3.2H2O$

b. Rusting of Iron

c. Redox reaction

d. Silver, Iron and Copper