Ratio and percentages Student activity Play

Reaction between an acid and a metal Animation Play

Reaction between metals and acids Student activity Play

Reaction between metals and acids Simulation Play

Reaction of potassium bromide and potassium iodide with sulphuric acid Animation Play

Reactions between acids and metals Student activity Play

Reactions between metal halides and concentrated sulphuric acid Student activity Play

Reactions with metals Student activity Play

Reflecting of light Animation Play

Relative atomic mass Student activity Play

Seawater Slideshow Play

Selected alloys Whiteboard exercise Play

Silver and gold coins Whiteboard exercise Play

Silver halides in photography Student activity Play

Silver nitrate Slideshow Play

Solubility of silver halides Whiteboard exercise Play

Solubility of silver halides in aqueous ammonia solution Animation Play

Sorting metals by their reactivity with oxygen Whiteboard exercise Play

Specific gravity Student activity Play

Statements about extraction of metals Whiteboard exercise Play

Sterilization and disinfection Whiteboard exercise Play

Sterilization and disinfection Student activity Play

Testing for hydrogen Student activity Play

The alloy of gold and silver Animation Play

The arrangement of chemical elements in the periodic table Animation Play