Period and frequency Student activity Play

Period and frequency Student activity Play

Periodic models Student activity Play

Periodic trends Student activity Play

Periscopes Student activity Play

Permanent dipoles Student activity Play

Permanent dipole–permanent dipole forces Student activity Play

Permeability and absorption of X-rays Student activity Play

Permutations Student activity Play

Permuting the limits of integration Student activity Play

Perpendicular distance from a point to a line Student activity Play

Perpendicular lines Student activity Play

Perpendicular lines Student activity Play

Perpetual motion machine Student activity Play

Personal protective equipment Student activity Play

Pesticides Student activity Play

Petroleum Student activity Play

pH and the ionic product of water Student activity Play

pH curves with two equivalence points Student activity Play

pH of buffer solutions Student activity Play

pH of solutions Student activity Play

pH of strong acids Student activity Play

pH of strong bases Student activity Play

Phagocytes; the consumers of micro-organisms Student activity Play

Phase Student activity Play

Phase-contrast microscopy – a lesson from unstained cells Student activity Play

Phases of the menstrual cycle Student activity Play

Phenolphthalein as an example of an indicator Student activity Play

Phenotype and genotype Student activity Play

Phenotype – the effect of gene activity and environmental factors Student activity Play