Soaps Student activity Play

Sodium hydroxide Animation Play

Sodium, magnesium and aluminium oxides Animation Play

Soil Student activity Play

Soil as a source of minerals Student activity Play

Solubility Animation Play

Solubility curve for calcium hydroxide Whiteboard exercise Play

Solubility of salts Student activity Play

Solution of calcium hydroxide Illustration Play

Solution of hexaaquairon(III) ions Whiteboard exercise Play

Sorting metals by their reactivity with oxygen Whiteboard exercise Play

Sources of calcium Slideshow Play

Sources of nutrients Student activity Play

Sources of nutrients Whiteboard exercise Play

Specific gravity Student activity Play

Spontaneous changes Animation Play

Spontaneous changes and probability Student activity Play

Stability of the metal complexes with multidentate ligands Animation Play

Standard entropy change Student activity Play

Standard hydrogen half-cell Student activity Play

Standard hydrogen half-cell Animation Play

Standard reduction potentials Student activity Play

Starch as a specific indicator Animation Play

Statements about extraction of metals Whiteboard exercise Play

Strong and weak bases Student activity Play