However, the general chemical formula for a polymer plastic can be written as (CH2-CHX)n, where X can be any number of different atoms, depending on the type of plastic. For example, the chemical formula for polyethylene is (CH2-CH2)n, where n is the number of repeating units in the polymer chain.

Plastic is defined as a material that contains an essential ingredient an organic substance of large molecular weight. It is also defined as polymers of long carbon chains. Carbon atoms are linked in chains and are produced in long-chain molecules.

The term “plastics” includes materials composed of various elements such as carbon, hydrogen, oxygen, nitrogen, chlorine, and sulfur. Using plastics can help reduce energy use and greenhouse gas emissions throughout the life of a product or package by allowing manufacturers and consumers to do more with less.

Plastics are made from natural materials such as cellulose, coal, natural gas, salt and crude oil through a polymerisation or polycondensation process. Plastics are derived from natural, organic materials such as cellulose, coal, natural gas, salt and, of course, crude oil.