Nuclear numbers Animation Play

Nucleophilic substitution Animation Play

Number of bonds of carbon atom in organic compounds Animation Play

Number of electron shells Animation Play

Number of electron shells Whiteboard exercise Play

Number of electrons in the orbital Animation Play

Number of molecules Animation Play

Numbers of moles Whiteboard exercise Play

Obtaining oxides Animation Play

Occurrence and uses of sodium chloride Student activity Play

Occurrence and uses of sodium chloride Whiteboard exercise Play

Occurrence of salts in nature and their uses 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

Ores Student activity Play

Other applications of electrolysis Student activity Play

Other functions of the kidneys Student activity Play

Other physical properties of alkanes Student activity 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