#class_9_chemistry #chemistry_basics #cbse_class_ix<br />what is chemistry ?<br />what do you understand by atom ?<br />what is molecule ?<br />what are compounds ?<br />what is stichiometric chemistry ?<br />what is chemistry thermodynamics?<br />what is chemical reaction ?<br />cbse class 9 basics <br />learn chemistry from basics <br />basics science
