Question

A bucket made of plastic does not rust like a bucket of iron. Explain.

Answer 1

Plastics are generally synthetic or semi synthetic materials which formed during the process of polymerization. Plasticity of plastic makes it possible to be molded or pressed into solid objects of various shapes.

Complete answer:
Plastic word is generally derived from the Greek word which means capable of being shaped or molded. Hence plastic has the property to mold in any desired shape. Most of the plastics contain organic polymers. Generally it forms a chain of carbon atoms along with the addition of oxygen, sulfur or nitrogen. The long chain consists of many repeat units known as monomers and polythene is polymer in which there are several thousand units.
Rusting generally acts on the surface of iron due to which the surface becomes dull. This can be explained by the most reactive nature of iron. Iron reacts with oxygen present in air and forms oxides due to which it gets corroded. The conditions necessary for rust are water and oxygen present in the environment.
Plastic is non-reactive metal and the main condition for rust is it should react with water and oxygen so plastic does not rust.

Note:
Iron is a chemical element represented by Fe which Fe stands for ferrum which is a Latin word and the atomic number of Fe is 26. This metal belongs to group 8 of the periodic table and kept in the category of transition elements because it contains d subshell.