The force of interaction depends on the distance and the charges Simulation Play

The ground state and excited states of an atom Student activity Play

The ground state and excited states of an atom Whiteboard exercise Play

The inner structure of the atom Student activity Play

The intensity of a beam of photons Animation Play

The intersection of sets Student activity Play

The intersection of sets Whiteboard exercise Play

The ionic character of s-block-metal compounds Student activity Play

The isomerism of alkanes Animation Play

The length of a metal rod Animation Play

The main terms describing the structure of the atom Whiteboard exercise Play

The mass proportion of atoms in copper(I) sulphide Animation Play

The meaning of the chemical formulae Whiteboard exercise Play

The melting points of simple molecular solids Animation Play

The model of propane Illustration Play

The molar mass Whiteboard exercise Play

The molar mass Student activity Play

The molar volume of substances Animation Play

The mole Student activity Play

The molecular mass of water Animation Play

The octet rule Animation Play

The operation of a cell Animation Play

The operation of a cell Whiteboard exercise Play

The operation of a cell Student activity Play

The origin of spectral lines Animation Play