Negative pressure Whiteboard exercise Play

Negative pressure Animation Play

Negative pressure Student activity Play

Negative pressure Simulation Play

Negative scalars Student activity Play

Negative scalars Whiteboard exercise Play

Negative scale factor Animation Play

nth roots Student activity Play

Number of roots for a negative discriminant Animation Play

Oxidation states of halogens Animation Play

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

Parametric function involving the natural logarithm and its derivative Whiteboard exercise Play

Permanent dipoles Student activity 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

pH and the ionic product of water Student activity Play

pH as the universal acidity measure Class activity Play

pH as the universal acidity measure Whiteboard presentation Play

pH calculations Animation Play

Photography Animation Play

Place value Whiteboard presentation Play

Place value Class activity Play

Plum-pudding model of atom Animation Play

Polarised covalent bond in hydrogen chloride Animation Play