common chemical compounds

Differences in chemical properties Metals have 1, 2 or 3 electrons in the outermost shell Non-metals have 4 to 8 electrons in the outermost shell Loses valence electrons and forms cations Gain or share valence electrons and form anions Electropositive Electronegative ..

Dihydrogen is quite stable and dissociates into hydrogen atoms only when heated above 2000 K...

Hydrogen reacts with unsaturated organic compounds sparked by carbon electrodes to form corresponding saturated compounds..

A chemical equation is a shorthand way of describing the events that occur in a chemical change or reaction. The method of representing a chemical reaction with the help of symbols and formulae of the substances involved in it is known as a chemical equation...

Discovery of Ammonia - Joseph Priestley first prepared ammonia in 1775 by heating Sal ammoniac (ammonium chloride) with slaked lime. Due to its basic nature, he called it alkaline air. In 1785, Comte Claude-Louis Berthollet determined the chemical composition of ammoni..

A molecule of a compound consists of two or more atoms of different elements joined together in a fixed ratio. Examples: CuSO 4 contains Cu - 1 atom, S - 1 atom, O - 4 atoms A chemical formula represents the composition of a molecule of the substance in terms of the symbol of th..

All pure compounds are differentiated from other compounds by the characteristic properties they possess. Properties like melting point, boiling point and refractive index are generally used as the criteria for checking the purity of an organic compound. For example, ..

We observe various chemical processes in our daily life. It is a common observation that the rates of these chemical reactions vary and depend on certain factors. The knowledge of the rate of a reaction is of importance in industries to ensure optimum productivit..

Metallic elements occur in the Earth's crust combined with non-metallic elements. After suitable treatment, the compounds are reduced to produce the metal..

(a) Mud and water (c) Mixture of alcohol and wat..