The chemical classification of matter is based upon its composition. Different substances differ from each other in their constituents composition. On the basis of chemical, composition matter can be classified as: 1) Pure substance 2) Mixtures. 1) Pure substance : Pure substance is consist of single type of particles. All constituent particles of a pure substance are same in their chemical nature. Example: copper, gold, iron, water, glucose, Sodium chloride etc . Pure substances can be further classified into elements and compounds. A) Elements : The simplest form of a pure substance, which can either be decomposed into nor built from simpler substances by ordinary physical or chemical methods. Example: Sodium, carbon, potassium, Sulphur, helium etc . Elements can further be classified into the following types. i)Metals ii) Non-metals and iii) Metalloids, B) Compounds : A pure substance containing two or more than two elements combined together in a defin...
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