ScienceHindeni

  Basice of chemistry  Chemistry is that branch of science, under which the properties, composition, structure and changes occurring in substances are studied.    Chemistry .The word chemistry is derived from the ancient Egyptian word 'alchemy', which means black colour.  The Egyptians called black soil 'Chemi' and initially the study of chemistry was called Chemeteching.   Lavoisier is called the father of chemistry.. Matter and its nature   >Matter: Any object in the world which occupies space, which has mass and which resists change in its structure, is called matter.   Example - water, air, sand etc.  Initially, Indians and Greeks believed that all things in nature were made up of five elements, these five elements - Kshitij, Jal, Pavak, Gagan and Sameer.   According to Kanada, the great sage of India, all matter is made up of very fine particles, which have been called 'atoms'.   ; classification of substances...