A mass spectrometer Illustration Play

Avogadro's number Animation Play

Avogadro's number (1) Student activity Play

Avogadro's number (1) Whiteboard exercise Play

Avogadro's number (2) Whiteboard exercise Play

Avogadro's number (2) Student activity Play

Calculating the mass given the number of moles Student activity Play

Calculating the mass given the number of moles Whiteboard exercise Play

Calculating the number of moles in a given mass Animation Play

Calculating the number of moles in a given mass Whiteboard exercise Play

Calculating the number of moles in a given mass Student activity Play

Calculating the volume Animation Play

Converting moles to grams Simulation Play

Densities of some substances Chart Play

Empirical and molecular formulae Animation Play

Empirical formula Whiteboard exercise Play

Empirical formula Student activity Play

How to find the molar mass of an element or a compound Animation Play

Molar interpretation of molecular formulae Animation Play

Molar interpretation of molecular formulae Whiteboard exercise Play

Molar interpretation of molecular formulae Student activity Play

Numbers of moles Whiteboard exercise Play

Reaction between magnesium and oxygen Animation Play

The chemist's counting unit – the mole Student activity Play

The chemist's counting unit – the mole Slideshow Play