Atoms and molecules - chemistry Requirements No Description This is a course that include atoms and molecule science . This includes videos lectures of topic atom, molecule, atomicity, symbols, formula formation, mole concept , laws of chemical combination. Lavoisier ,Proust laws. Percentage composition, molar mass , atomic mass. This lecture makes your foundation for advance chemistry.After completing these lectures students are eligible to read structure of atom part. Who this course is for Class 9