Determination of enthalpy change in combustion reactions (1) Student activity Play

Determination of enthalpy change in combustion reactions (2) Student activity Play

Determining standard enthalpies of reaction Whiteboard exercise Play

Determining the mean bond enthalpy for polyatomic molecules Animation Play

Development - energy Slideshow Play

Development - waste Slideshow Play

Different forms of energy Simulation Play

Different types of chemical energy Slideshow Play

Different types of energy Animation Play

Diffraction of electrons – the Davisson-Germer experiment Student activity Play

Dioxins Student activity Play

Directional changes in an ecosystem Animation Play

Discharging a battery. Accumulators. Whiteboard exercise Play

Discharging a battery. Accumulators. Student activity Play

Discontinuous variation Slideshow Play

Discontinuous variation Student activity Play

Discovery of elementary particles Whiteboard exercise Play

Discovery of elementary particles Student activity Play

Diseases related to chromosome changes Illustration Play

Dissolving ionic compounds in water Student activity Play

Distinguish between a physical and a chemical changes Whiteboard exercise Play

Diurnal changes in the body temperature of the camel Animation Play

Do catalysts affect the reaction equilibrium? Animation Play

Do households affect ecosystems? Student activity Play

Doubling time changes Whiteboard exercise Play