common chemical compounds

Ethers are relatively inert compounds inspite of the presence of oxygen atom carrying two lone pairs of electrons in their molecules. These are not easily attacked by alkalis, dilute mineral acids, metallic sodium, PCl 5 etc. under ordinary conditions. It is because of this reason ..

Trends in Chemical Reactivity - As in the case of S, the important oxidation states observed for Se and Te are also 2, +2, +4 and +6. The chalcogenide dianions (E 2 - ) exist only in their compounds with the most electropositive elements. By and large, chalcogens with the except..

Chemical Equations - 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..

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..

Molecules of Compounds - 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 sub..

Compounds always contain a definite proportion of the same elements by mass. Water as a compound, always contains hydrogen and oxygen in the ratio 1:8 by mass. The properties of compounds are totally different from the elements from which they are formed. For exam..

Elemental carbon - Symbol: C Atomic number : 6 Atomic mass: 12 (most common isotope) Electronic configuration: 1s 2 ,2s 2 ,2p 2 Position in the periodic table: Period II Group IV Carbon occurs in the free state as well as combined state. The following schematic chart shows the occurrence ..

This method of nomenclature was used before 1892. In this system of nomenclature, the compounds were named on the basis of their history, such as source of origin et..

Separation of the Constituents of Some Common Mixtures - (a) Mud and water (c) Mixture of alcohol and wat..