The type of substance that is made up of some kind of particles is termed a pure substance. Another important feature of pure substances is that they have a fixed and constant structure. The elements and the compounds are the classes of the pure substances.
The elements are composed of only one type of atoms and it cannot be broken down into simpler components by either physical or chemical methods. The pure substances have fixed B.P and M.P, are homogenous and typically take part in the chemical reactions to form anticipated products.
