Class 6: Chemistry: Video LessonsUncategorized / By Indo English School MATTER IN OUR SURROUNDINGS (NIOS)PHYSICAL CHANGE (NCERT) CHEMICAL CHANGES (NCERT)SOLUTIONS (NCERT)PERIODIC CLASSIFICATION OF ELEMENTS (NIOS)ACIDS, BASES AND SALTS (NIOS)ATOMIC STRUCTURE (NIOS)CHEMICAL BONDING (NIOS)ENDOTHERMIC REACTIONS AND EXOTHERMIC REACTIONS METALS (NCERT)MOLE CONCEPT (NCERT)