The energy required for the extraction Whiteboard exercise Play

The enthalpy change for the transformation of solid sulphur into gaseous sulphide ions Whiteboard exercise Play

The formation of aluminium sulphide: calculations Animation Play

The formation of ionic compounds is exothermic Animation Play

The impact of air pollutants on the environment Student activity Play

The importance of chemical reactions Student activity Play

The importance of mineral ions Student activity Play

The law of conservation of mass Animation Play

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

The molar mass of sulphur dioxide Whiteboard exercise Play

The mole Whiteboard exercise Play

The mole Student activity Play

The nature of chemical reactions Student activity Play

The oxidation of sulphur(IV) oxide Animation Play

The percentage composition of dinitrogen oxide Animation Play

The percentage composition of iron(III) oxide Animation Play

The percentage of biogenic elements in the human organism Illustration Play

The reaction between carbon dioxide and sodium hydroxide Animation Play

The reaction between sulphur dioxide and chlorine in an aqueous Animation Play

The relative molecular mass of phosphorus(III) oxide Whiteboard exercise Play

The role of limestone Animation Play

The strength of carbon–carbon bond Animation Play

The structure of the periodic table – groups Whiteboard exercise Play

The structure of the periodic table – groups (2) Student activity Play

The synthesis of aluminium sulphide Animation Play