An application Student activity Play

An application of a proportion Student activity Play

Appearance of copper sulphide Illustration Play

Application of the properties of the scalar product Animation Play

Application of transition elements and their compounds Slideshow Play

Applications of elements arising from their conductivities Slideshow Play

Applying the properties of division Whiteboard exercise Play

Aquarium, water and fish volume Whiteboard exercise Play

Arrangement of chemical elements in the periodic table 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 Simulation Play

Arranging metals according to their increasing reducing power Student activity Play

Atomic mass of an element Student activity Play

Atomic mass of an element Whiteboard exercise Play

Atomic number Whiteboard exercise Play

Atomic number Student activity Play

Atomic radii Animation Play

Atoms Student activity Play

Atoms, nucleons and electrons Student activity Play

Atoms, nucleons and electrons Animation Play

Avogadro's number (2) Student activity Play

Balancing equations for redox reactions in acidic solution using half-equations Student activity Play

Basic properties of alkali metal oxides Animation Play

Basic properties of matter Whiteboard presentation Play