DAV Class 7 SCIENCE Chapter 3 Chemical Substances and Processes Solutions
In This Post You Can Download DAV Class 7 Science Chapter 3 CHEMICAL SUBSTANCES AND PROCESSES Solution. Content Of Chemical Substances And Processes Pure Substance: Material Made up of same Kind Of Particles ( Atoms Or Molecules). Example: Iron Element :An Element is a Pure Substance Made up of Atoms Of Same Kind. Example: Cu … Read more