Ability to react with metals Animation Play

Absorption of visible light. Colorimetry Class activity Play

Absorption of visible light. Colorimetry Whiteboard presentation Play

Absorption spectra Student activity Play

Absorption spectrum of Co(II) ions Whiteboard exercise Play

Abundance of the elements in the crust and in the whole Earth Animation Play

Acids (2) Student activity Play

Acids and alkalis Class activity Play

Across the periodic table Student activity Play

Additional information contained in chemical equations Student activity Play

Alkaline earth metals Slideshow Play

Alkaline earth metals Student activity Play

Aluminium alloys Student activity Play

Application of magnesium hydroxide Slideshow Play

Are all atoms of the same element identical? Student activity Play

Arranging metals according to increasing reactivity Student activity Play

Arranging metals according to increasing reactivity Animation Play

Arranging metals according to their increasing reducing power Student activity Play

Arranging metals according to their increasing reducing power Simulation Play

Atomic number and mass number Student activity Play

Atomic radii of the s-block elements Student activity Play

Atomic radius Student activity Play

Atomic spectra Class activity Play

Atomic spectra Whiteboard presentation Play

Atomic spectra of elements Whiteboard exercise Play