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 any two balls attract one another? Whiteboard exercise Play

Do any two balls attract one another? Student activity Play

Do catalysts affect the reaction equilibrium? Animation Play

Do households affect ecosystems? Student activity Play

Does a man attract the Earth? Whiteboard exercise Play

Does a man attract the Earth? Student activity Play

Drawing circuits Student activity Play

Drugs and health Whiteboard presentation Play

Ecological succession Whiteboard presentation Play

Ecological succession Class activity Play

Economics of the extraction of metals Student activity Play

Economics of the extraction of metals Whiteboard exercise Play

Ecosystem Whiteboard presentation Play

Ecosystem Class activity 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

Effect of temperature on chemical equilibrium Student activity Play

Effect of temperature on free energy change Student activity Play

Effect of ΔH° and ΔS° on free energy change Student activity Play