What special name is given to the corrosion of iron?

42 What happens when a zinc strip is dipped into a copper sulphate solution ?

(a) Write the equation for the reaction that takes place.

(b) Name the type of reaction involved.

43 Explain the term "corrosion" with an example. Write a chemical equation to show the process of corrosion of iron. 43 What type of chemical reaction is involved in the corrosion of iron? 43 Name any three objects (or structures) which are gradually damaged by the corrosion of iron and steel.