The double helix Slideshow Play

The double helix of DNA Whiteboard exercise Play

The double helix of DNA Student activity Play

The equilibrium for the decomposition of hydrogen iodide Animation Play

The highest common factor Student activity Play

The products released at the electrodes during the decomposition of water Animation Play

The stability of alkaline-earth-metal carbonates Simulation Play

The stability of alkaline-earth-metal carbonates Student activity Play

The way catalysts work Animation Play

Thermal decomposition of magnesium carbonate Animation Play

Thermal decomposition of potassium manganate(VII) Animation Play

Thermal decomposition of salts Student activity Play

Thermal decomposition of salts Whiteboard exercise Play

Three factors in the denominator Animation Play

Two billiard balls collisions and the velocity vectors Whiteboard exercise Play

Uses of fats Student activity Play

Using partial fractions to calculate integrals Student activity Play

Using partial fractions to find the integral Whiteboard exercise Play

What are catalysts? Student activity Play

What are chemical compounds? Student activity Play

What are enzymes? (2) Student activity Play

What is cracking? Student activity Play

What is cracking? Whiteboard exercise Play

What is precipitation? Student activity Play

Zero-order reactions Whiteboard exercise Play