Number of molecules Animation Play

Number of moles of ammonia molecules Animation Play

Numbers of molecules and atoms Animation Play

Organic compound Simulation Play

Organic molecules Class activity Play

Organic molecules Whiteboard presentation Play

Other physical properties of alkanes Student activity Play

Other physical properties of alkanes Whiteboard exercise Play

Oxidation of nitrogen monoxide by ozone Animation Play

Oxygen atom and covalent bonding Animation Play

Ozone hole: probable causes Student activity Play

Partial pressure and molar fraction Student activity Play

Peptide hormones Animation Play

Permanent dipoles Whiteboard exercise Play

Permanent dipoles Student activity Play

Permanent dipoles Whiteboard exercise Play

Permanent dipole–dipole moment Animation Play

Permanent dipole–permanent dipole forces Student activity Play

Permanent dipole–permanent dipole interaction in liquids and gases Animation Play

Permeability and absorption of X-rays Student activity Play

pH of ammonia solution Animation Play

Phase Whiteboard exercise Play

Phase Student activity Play

Phospholipid molecule Simulation Play

Phosphoric(V) acid molecule Animation Play