Conservation of natural resources Whiteboard presentation Play

Cracking experiment in the laboratory Animation Play

Cracking process Student activity Play

Decay reaction Whiteboard exercise Play

Decomposition of hydrogen peroxide Animation Play

Deposits of natural gas Slideshow Play

Derivatives of powers with rational exponent Whiteboard presentation Play

Derivatives of powers with rational exponent Class activity Play

Digestion Whiteboard presentation Play

Dividing natural numbers Student activity Play

Do catalysts affect the reaction equilibrium? Animation Play

Effect of temperature and catalyst on the reaction rate Whiteboard presentation Play

Effect of temperature and catalyst on the reaction rate Class activity Play

Effects of animal husbandry on the natural environment Slideshow Play

Effects of fisheries on the natural environment Slideshow Play

Effects of intensive agriculture on the natural environment Slideshow Play

Elimination reactions Student activity Play

Enzymes Student activity Play

Enzymes are specific and selective (1) Simulation Play

Enzymes are specific and selective (1) Student activity Play

Esterification Animation Play

Eutrophication of natural waters Slideshow Play

Examples of catalysts Slideshow Play

Examples of uses of the transition metals and their compounds as catalysts Slideshow Play

Exceptions to the Hardy–Weinberg principle Student activity Play