Dative bond in the ammonium cation Animation Play

DDT – a persisting insecticide Slideshow Play

Dealing with very large and very small numbers Animation Play

Decantation Animation Play

Decantation Animation Play

Decarboxylation Animation Play

Decomposition of ammonia on a metal surface Animation Play

Decomposition of calcium carbonate Animation Play

Decomposition of calcium carbonate Animation Play

Decomposition of calcium carbonate – a kinetic study Student activity Play

Decomposition of calcium carbonate – a kinetic study Whiteboard exercise Play

Decomposition of CFC in the atmosphere Slideshow Play

Decomposition of hydrogen iodide Animation Play

Decomposition of hydrogen peroxide Animation Play

Decomposition of hydrogen peroxide Animation Play

Decomposition of hydrogen peroxide Animation Play

Decomposition of plastic litter Slideshow Play

Decomposition reaction Slideshow Play

Decompression sickness Slideshow Play

Decreasing the concentrations of reacting substances Animation Play

Degree of disorder, probability and entropy Whiteboard exercise Play

Democritus' and Dalton's atomic theories Student activity Play

Democritus's atomic theory Animation Play

Denaturation of proteins Student activity Play

Denaturation of proteins Whiteboard exercise Play

Densities of some substances Chart Play

Densities of straight-chain alkanes Illustration Play

Density Animation Play

Density of alkali metals Student activity Play

Density of alkali metals Animation Play