Heating and cooling curves. Melting and boiling points Student activity Play

How plants obtain the substances necessary for life Slideshow Play

How to find out whether a given material is a pure substance or a mixture? Animation Play

Increasing the concentrations of reacting substances Animation Play

Influence of the concentrations of substances on the position of equilibrium Illustration Play

Interrelationship of concentrations of hydrogen ions and hydroxide ions Student activity Play

Investigating the electrical conductivity of substances Simulation Play

Investigating the electrical conductivity of substances Student activity Play

Metabolism of toxic substances in the liver Slideshow Play

Mineral substances Student activity Play

Mineral substances Whiteboard exercise Play

Mixtures and their composition Slideshow Play

Molecular structure of substances Animation Play

Nitration with pure nitric(V) acid Whiteboard exercise Play

Octane ratings of some combustible substances Audio text Play

Organisms that synthesise antibiotic substances Slideshow Play

Phase Student activity Play

Physical changes Student activity Play

Physical changes in materials Class activity Play

Physical changes in materials Whiteboard presentation Play

Physical changes of three different substances Whiteboard exercise Play

Physical properties of solid covalent substances Student activity Play

Physical properties of solid covalent substances Simulation Play

Polar and non-polar substances Animation Play

Properties of water Class activity Play