Early attempts to classify chemical elements Whiteboard exercise Play

Early attempts to classify chemical elements (1) Student activity Play

Early attempts to classify chemical elements (2) Student activity Play

Eka-aluminium and eka-silicon Whiteboard exercise Play

Eka-aluminium and eka-silicon Chart Play

Electron configuration Animation Play

Electron configuration and the periodic table Whiteboard exercise Play

Electron configuration and the periodic table Student activity Play

Electron configuration of an iron Animation Play

Electron configuration of sulphur Animation Play

Electron configuration of transition metal ions Student activity Play

Electron shells and subshells (1) Student activity Play

Electron spin. Pauli's exclusion principle Student activity Play

Electronegativity Student activity Play

Elements of Group 17 Whiteboard presentation Play

Elements of Group 17 Class activity Play

Energy of dissolution reaction Glossary Play

Enthalpy of hydration Student activity Play

Equal segments Animation Play

Equation of a circle Class activity Play

Equation of a circle Whiteboard presentation Play

Equation of a circle in the coordinate system Animation Play

Equation of any circle Simulation Play

Exercises about the equation of the circle with centre at an arbitrary point Student activity Play

Experimental determination of enthalpy of solution Whiteboard exercise Play