Question

how can you differentiate pure subtances and im pure subtances

Answer 1

pure substances: 1. they are always homogeneous. 2. they have specific set of properties 3.formation of pure substances involves change in energy 4. components of pure substances can be separated only by complex chemical process.............IMPURE SUBSTANCES: 1. they can be homogeneous or heterogeneous 2. they do not have specific set of properties 3. formation of a impure substance does not involve any change in energy 4. components of impure substances can be separated by simple physical methods.................. hope its help u..