Trigonometric functions in nature Animation Play

Using the information included in the periodic table Whiteboard exercise Play

Valence electrons Animation Play

Variable oxidation states – iron and copper Student activity Play

Variable oxidation states – manganese Student activity Play

Variable oxidation states – manganese Whiteboard exercise 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

Why does the electronegativity change across a period? Animation Play