ЁЯУЪ Some Basic Concepts of Chemistry ЁЯУЪ Matter: Anything that exhibits inertia is called matter. The quantity of matter is its mass. Classification of Matter:- Based on chemical composition of various substances. ЁЯУНElements: ➖It is the simplest form of the matter. ➖Smallest unit of an element is known as atom. ➖Total number of the known elements is 118 out of which 98 elements occur naturally and 20 are formed by artificial transmutation. ➖Examples: Na, K, Mg. Al, Si, P, C, F, Br etc. ЁЯУНCompound: ➖It is a non-elemental pure compound. ➖Formed by chemical combination of two or more atoms of different elements in a fixed ratio. ➖Examples: H2O, CO2, C6H12O6 etc. ЁЯУНMixture: ➖Formed by physical combination of two or more pure substances in any ratio. ➖Chemical identity of the pure components remains maintained in mixtures. ➖Homogeneous mixtures are those whose composition for each part remains constant. ➖Example, Aqueous and gaseous solution. ➖Heterogeneous mixtures are those whose...
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