Reactions occurring at the electrodes Student activity Play

Reactions of commercially available galvanic cells Slideshow Play

Reactions of electrophiles: electrophilic addition and substitution Student activity Play

Reactions with hydrogen Student activity Play

Reactivity of halogens Student activity Play

Reactivity of the alkali metals and their electron configuration Animation Play

Reactivity of the alkaline-earth-metals and their electron configurations Animation Play

Reactivity of the halogens Student activity Play

Reasons for the high reactivity of alkenes (1) Student activity Play

Redox reactions Animation Play

Redox reactions around us Student activity Play

Relationship between the atomic structure and the position of elements in periods Animation Play

Relationship between the group number and the number of valence electrons Animation Play

Relative abundance of isotopes and mass spectra Student activity Play

Relative mass and charge Animation Play

Resonance energy for benzene Animation Play

Roentgen spectra of elements – characteristic radiation Student activity Play

Roentgen spectra of elements – characteristic radiation Whiteboard exercise Play

Roentgen's experiment Animation Play

Rutherford's atomic model Student activity Play

Rutherford's experiment Whiteboard exercise Play

Rutherford's experiment Animation Play

s-block elements Animation Play

Salts of strong acids and weak bases Student activity Play