OCR A practical activity groups

Choose the PAG area you want to revise. Your school may have used a different experiment: OCR assesses the practical skills, not one memorised procedure.

OCR groups practical work into PAG1–PAG12. Centres can modify or devise activities, so these links practise the skills and common contexts rather than treating one worksheet as compulsory.

PAG1 Amounts, composition and formulaeYear 12 / AS content Practise PAG2 Titration and amount of substanceYear 12 / AS content Practise PAG3 Enthalpy measurementsYear 12 / AS content Practise PAG4 Identifying unknown substancesYear 12 / AS content Practise PAG5 Organic liquid preparationYear 12 / AS content Practise PAG6 Organic solid preparation and purificationYear 13 / full A-level Practise PAG7 Identifying organic unknownsYear 12 / AS content Practise PAG8 Electrochemical cellsYear 13 / full A-level Practise PAG9 Rates by continuous monitoringYear 12 / AS content Practise PAG10 Initial rates and activation energyYear 13 / full A-level Practise PAG11 pH measurement and titration curvesYear 13 / full A-level Practise PAG12 Research and investigationYear 13 / full A-level Practise

Prefer to practise by skill?

Use the main practical page for graphs, uncertainty, titration technique, planning and the other skills that recur across several experiments.

Choose a practical skill

Build an investigation

Choose each part of a method and see whether the decisions fit together before you try a full written plan.

Open investigation builder