The structure of the periodic table Whiteboard exercise Play

The trends in the properties of the elements in Period 3 Whiteboard presentation Play

The trends in the properties of the elements in Period 3 Class activity Play

The unit of atomic mass Animation Play

Trend in the reactivity of halogens Animation Play

Uses of transition metal complexes Student activity Play

Valence bond theory (1) Student activity Play

Valence bond theory limitations Animation Play

Variable oxidation states – manganese Whiteboard exercise Play

Variable oxidation states – manganese Student activity Play

Variation of electronegativity across a period Illustration Play

Variation of electronegativity across a period Simulation Play

Variation of electronegativity across a period (1) Student activity Play

Variation of electronegativity across a period (2) Student activity Play

Variation of electronegativity within a group Student activity Play

Variation of electronegativity within a group Whiteboard exercise Play

What decides whether an atomic mass is a whole number or not Animation Play

Why atomic masses are not usually whole numbers? Student activity Play

Why it is useful to know the atomic masses of elements? Student activity Play

X-ray radiation Glossary Play

X-ray radiation Student activity Play