Alkalinity of hydroxides Animation Play

Alkanes and cycloalkanes Class activity Play

Alkanes and cycloalkanes Whiteboard presentation Play

Alkenes Class activity Play

Alkenes Whiteboard presentation Play

Allotropes of carbon Animation Play

Allotropic forms of an element Animation Play

Allotropic forms of carbon Student activity Play

Amino acid structure Whiteboard exercise Play

Amino acids Whiteboard presentation Play

Amino acids Class activity Play

Amino acids – the basic units of proteins Student activity Play

Ammonia Animation Play

Amorphous solids Student activity Play

An atom and a nucleus Animation Play

An atom and a nucleus Whiteboard exercise Play

An atom and a nucleus Student activity Play

An electron-proton pair Animation Play

An explosion of atom bomb Illustration Play

Angiosperms Student activity Play

Angiosperms – seed plants with sporophyte and gametophyte generations Student activity Play

Animal and plant cells Illustration Play

Animal cell structure Whiteboard exercise Play

Antiparticles – matter and antimatter Whiteboard exercise Play

Antiparticles – matter and antimatter Student activity Play