Study Safar Classes

Science can be viewed as a continuing human effort tosystematise knowledge for describing and understandingnature. You have learnt in your previous classes that we come across diverse substances present in nature andchanges in them in daily life. Curd formation from milk,formation ofvinegarfrom sugarcane juiceonkeepingforprolonged time and rusting of iron are some of the examples of changes which we come across many times.For the sake of convenience, science is sub-divided intovariousdisciplines: chemistry, physics, biology, geology,etc. The branch of science that studies thepreparation,properties, structure and reactions of material substances is called chemistry.