Basic definitions. Mixture, pure substances, Element, compound,and Atom . For 9th class student.

IS lecture ke andar chemistry ke kuchh basic definition kiye gaye hain jaise ki mixture kya hota hai jaise ke pure substances kya hote hain jaise ke element kya hota hai jaise ki compound Kya hota hai jaise ki atom kya hota hai is tamam ke hawale se matlab selection ke andar with easy explanation ke sath bataya gaya hai #education #balochistanboard #chemistry 9th class .