Chemistry comprises two related but distinct activities:
(i)  the quest for an understanding of matter and material change,
(ii) the utilization of material change for human ends.
Ideally, the first activity provides the necessary know-how for the pursuit of the second, but in practice, the help it can give is only partial, and the second activity has to fall back on trial and error techniques in order to achieve its ends. This means that a good chemist is one who not only has a mastery of chemical theory, but also a good knowledge of chemical facts. With such a knowledge he can direct a trial-and error approach to practical problems in the most promising directions.
Organic chemistry is usually defined as the chemistry of compounds of carbon, inorganic chemistry being then the chemistry of all the other elements. This distinction is not a completely satisfactory one, however, since there are many compounds of carbon that are quite different from those studied by organic chemists (e.g. tungsten carbide, used for tipping cutting tools) and there are many compounds of other elements that are very similar to those studied under organic chemistry (e.g. the silicon analogues of the hydrocarbons). It is best, therefore, to think of inorganic chemistry as the chemistry of all the elements, with organic chemistry as being a more detailed study of certain important aspects of one of them – viz. the hydrocarbons and their derivatives.


Ch.1 – Welcome to Class
Ch.2 – Inorganic Chemistry
Ch.3 – Relative Importance of Different Elements
Ch.4 – Classification of Elements
Ch.5 – Binary Compounds
Ch.6 – Limiting Types of Binary Compounds
Ch.7 – Types of Formula
Ch.8 – Classification of Elements
Ch.9 – Valency
Ch.10 – Pseudo-binary Compounds
Ch.11 – The Periodic Table
Ch.12 – Interpretation of Main-group Valencies
Ch.13 – Compounds of Higher Order than Two
Ch.14 – Coordination Compounds
Ch.15 – Loose Compounds and Solutions
Ch.16 – Types of Chemical Reaction
Ch.17 – Acids, Bases, and Salts
Ch.18 – Oxidation and Reduction