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SOME BASIC CONCEPTS OF CHEMISTRY -CLASS 11-PURE NCERT BASED NOTES -HELPFUL FOR IIT JEE and NEET and any OTHER EXAM- CHEMISTRY CHP 1

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  DEFINITION OF CHEMISTRY -                                The branch of science that studies the preparation, properties, structure and reactions of materials substances called chemistry it is the science of molecules and their transformation. DEVELOPMENT OF CHEMISTRY - Chemistry was developed mainly in form of Alchemy and Iatochemistry during 1300- 1600 CE.            Modern Chemistry to kept in 18th century Europe after a few centuries of alchemical traditions which were introduced by the Arabs.        In ancient India, chemistry was called Rasayan Shastra ,rastantra, Ras Priya and  Ras Vidya . It included metallurgy medicine manufacturer of cosmetics, glass ,etc.   Chemistry is also called science of atoms and molecules. IMPORTANCE OF CHEMISTRY- Chemistry plays a central role in Science and is open Interruined with other branches of s...