Determination of the structure of an unknown compound Animation Play

Determining the mean bond enthalpy for polyatomic molecules Animation Play

Determining the primary structure Animation Play

Dinitrogen pentoxide Simulation Play

Direct evidence for the structure of the inside of the Earth Slideshow Play

Discovering matter Student activity Play

Early atomic theories Whiteboard exercise Play

Early concepts of the structure of benzene Whiteboard exercise Play

Early concepts of the structure of benzene Student activity Play

Earthing of an insulator Animation Play

Electricity meter Student activity Play

Electronic logic Student activity Play

Electronic logic Animation Play

Electronic logic Whiteboard exercise Play

Electroscope Student activity Play

Electroscope Whiteboard exercise Play

Enthalpy changes in the solution process Class activity Play

Enthalpy changes in the solution process Whiteboard presentation Play

Enthalpy of hydration Student activity Play

Enzymes are proteins Student activity Play

Epidermal tissue – structure Student activity Play

Equilibrium of forces and moments of forces Slideshow Play

External muscle structure Animation Play

External structure of a root Simulation Play

External structure of the heart Slideshow Play