A balanced diet Student activity Play

Ability to react with metals Animation Play

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

Achieving success in agriculture and animal husbandry Student activity Play

Acid dissociation constant and pH (1) Student activity Play

Acid reactions Whiteboard presentation Play

Acid reactions Class activity 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

Animal-derived foods Slideshow Play

Animals: vertebrates 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