Polymerase chain reaction (PCR) Animation Play

Primary, secondary or tertiary alkyl groups Animation Play

Producers and consumers in a typical food chain Illustration Play

Pyramids of numbers Student activity Play

Quaternary ammonium salts Student activity Play

Soaps Student activity Play

Stages of the polymerase chain reaction Whiteboard exercise Play

Straight carbon chain Whiteboard exercise Play

Structural isomerism: chain isomers Whiteboard exercise Play

Structural isomerism: chain isomers Student activity Play

Structure and properties of quaternary ammonium salts Animation Play

Structure of a peptide chain Animation Play

Structure of amines Student activity Play

Structure of amino acids Student activity Play

The catenary Animation Play

The chain rule Animation Play

The chain rule Student activity Play

The chain rule Whiteboard exercise Play

The chain rule for more than two functions Student activity Play

The chain rule for more than two functions Animation Play

The flow of chemical energy through the food chain Animation Play

The Friedel–Crafts alkylation Animation Play

The isomerism of alkanes Animation Play

The naming of the longest alkyl group Animation Play

The octane rating of petrol Whiteboard exercise Play