Numbering of carbon atoms Animation Play

Optical activity Animation Play

Optical isomerism of amino acids Student activity Play

Orbital energy and order of assignment to subshells Student activity Play

Orbits of electrons Animation Play

Order of filling of the shells by electrons Animation Play

Organic and inorganic compounds Student activity Play

Organic chemistry Student activity Play

Organic chemistry Whiteboard exercise Play

Organic compound Simulation Play

Organic compounds today Animation Play

Organic molecules Class activity Play

Organic molecules Whiteboard presentation Play

Origin of crude oil (1) Student activity Play

Other physical properties of alkanes Whiteboard exercise Play

Other physical properties of alkanes Student activity Play

Other properties Student activity Play

Other simple sugars Animation Play

Overlapping of atomic orbitals Animation Play

Oxidation state of the phosphorus atom in phosphate(V) ion Animation Play

Oxidation states Animation Play

Oxidation states Student activity Play

Oxidation states of halogens Animation Play

Oxidation states of the p-block elements in their commonest chemical compounds Student activity Play

Oxygen atom and covalent bonding Animation Play