Pure Chemistry and Applied Chemistry are related, they need very unique differences. The ability to study something for your own knowledge benefit is pure chemistry. On the other hand the process of using your knowledge for an intended purpose or application is applied chemistry. Generally a substance is pure if it has a homogeneous chemical composition in Chemistry. Iron, steel, and water are the examples of pure substances. A good definition of basic terms is an essential prerequisite for the study of any physicochemical processes. Applied Chemistry has four areas of study: physical chemistry, materials chemistry, chemical engineering, and environmental chemistry. In general the manufacture of pharmaceuticals and drugs are examples of Applied Chemistry. The contributions of chemicals and chemical products are playing important role within the field of engineering, biotechnology, agriculture and pharmacology etc. The numbers of such chemical substances are gradually enhancing each year. This leads to enhancing the responsibility of engineers while choosing engineering materials for converting them into finished products. Now a days, choosing engineering material isn't only supported conventional qualitative and quantitative testing of their chemical composition and behavior under service conditions, but also supported environmental and eco-friendly factors. To achieve such objectives it's essential to understand applied aspects of chemistry. A good definition of basic terms is an essential prerequisite for the study of any physicochemical processes.
