Effect of number of gas particles on the pressure Animation Play

Effect of pressure increase on reaction rate at the molecular level Animation Play

Effect of reactant particle size on the rate of a chemical reaction Student activity Play

Effect of reactant pressure on the rate of a chemical reaction Student activity Play

Effect of reactant pressure on the rate of a chemical reaction Whiteboard exercise Play

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

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

Effect of temperature increase on reaction rate at the molecular level Animation Play

Effect of temperature on the pressure of a gas Animation Play

Effect of temperature on the rate of chemical reaction Whiteboard exercise Play

Effect of temperature on the rate of chemical reaction Student activity Play

Effective rate Whiteboard exercise Play

Effective rate Student activity Play

Effects of physical factors on the rate of photosynthesis Slideshow Play

Electrical resistance Class activity Play

Electrical resistance Whiteboard presentation Play

Electromotive force Whiteboard presentation Play

Electromotive force Class activity Play

Energy spectrum of a black body Animation Play

Energy spectrum of a black body Student activity Play

Enzymatic reactions Student activity Play

Enzymatic reactions Whiteboard exercise Play

Equilibrium of forces – Newton's First Law of Motion Student activity Play

Equilibrium of forces – Newton's First Law of Motion Whiteboard exercise Play

Evolutionism and economy Slideshow Play