The inner structure of the atom Student activity Play

The Law of Radioactive Decay Simulation Play

The Law of Radioactive Decay Whiteboard exercise Play

The Law of Radioactive Decay Student activity Play

The mass spectrum of chlorine gas Whiteboard exercise Play

The mechanism of substitution of ethanol with hydrogen chloride Animation Play

The melting points of simple molecular solids Animation Play

The model of propane Illustration Play

The mole Student activity Play

The molecular mass of water Animation Play

The number of decayed nuclei and the number of remaining nuclei Student activity Play

The oxidation of of sulphate(IV) ions to sulphate(VI) ions Animation Play

The percentage of biogenic elements in the human organism Illustration Play

The percentage of the number of nuclei of an isotope Whiteboard exercise Play

The period number and the number of electron shells Animation Play

The primitive atmosphere Slideshow Play

The process of dissolving Animation Play

The process of electrolysing water Animation Play

The properties of chemical compounds and their constituent elements Student activity Play

The properties of solids Student activity Play

The properties of α radiation Whiteboard exercise Play

The properties of α radiation Student activity Play

The properties of α radiation Simulation Play

The properties of β radiation Simulation Play

The properties of β radiation Student activity Play