Chemistry

This chapter covers topics like Introduction to matter, Atomicity, Atoms, Chemical formulae, Compounds, Effect of temperature on solid, liquid and gas, Elements and its classification, Molecules and Symbol of an element.

This chapter covers topics like Introduction to an atom, Atomic number and Mass number, Evolution of idea of an atom, How small is an atom?, The subatomic particles and Valency.

This chapter covers topics like Introduction to a change, Periodic and non-periodic change and Physical changes, Chemical changes, Changes of state, Effect of heat on solid, liquid and gases and Exothermic and Endothermic chemical changes.

This chapter covers topics like Introduction to polymer, Polymers, Fibres, Glass and Plastics.

This chapter covers topics like Analgesics, Antacid, Antibiotics, Antihistamine, Combustion, Fire control, Flame, Introduction and Oral Rehydration Solution (ORS).