Determination of enthalpy change in combustion reactions Whiteboard exercise Play

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

Determining the units of equilibrium constant Animation Play

Determining the units of equilibrium constant Whiteboard exercise Play

Development - energy Slideshow Play

Development - waste Slideshow Play

Different forms of energy Simulation Play

Different magnitudes of forces Animation 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

Discharging a battery. Accumulators. Whiteboard exercise Play

Discharging a battery. Accumulators. Student activity Play

Discovery of elementary particles Whiteboard exercise Play

Discovery of elementary particles Student activity Play

Dissolving ionic compounds in water Student activity Play

Do catalysts affect the reaction equilibrium? Animation Play

Do households affect ecosystems? Student activity Play

Drawing circuits Student activity Play

Drugs and health Whiteboard presentation Play

Ecological succession Whiteboard presentation Play