... classified as raw materials, semifinished and finished products, although some prefer to combine semifinished and finished products into a single classification, “processed materials” Raw materials ... Structural chemistry, which deals with the molecular structure and its relation to the properties of substances. - Radiochemistry, which is the chemistry of radioactive elements and of reactions ... cannot do without physics and mathematics, and is also closely linked to some other sciences, e.g. inorganic chemistry is linked closely to geology, mineralogy, and metallurgy, while organic chemistry...