OCR A2 Chemistry Topical 2021-20 Download Past Papers from OCR site here Component 1 Acid–base and redox reactions Amount of substanceAtoms, compounds, molecules and equationsChemical equilibrium (qualitative) Electrons, bonding and structureEnthalpy changes Enthalpy, entropy and free energy pH and bufferQualitative analysisReaction rates(quantitative)Redox and electrode potentials1 Transition elements Component 2 Acid–base and redox reactionsAlcohols Analytical techniques (IR and MS) Aromatic compoundsCarbonyl compounds Carboxylic acids and esters HydrocarbonsNitrogen compoundsOrganic Chemistry-Basic conceptsOrganic synthesis Polymers Spectroscopy (NMR) Topical Solutions coming soon