OCR • Chemistry A

The notes provide detailed, organised and colour coded information about benzene ring and its main properties and reactions. Topics included: benzene ring, electrophilic substitution mechanism, detailed mechanism drawings, problems with kekule structure and directing groups. The summary is based of the OCR (A) A-level book and several revision websites combining the main specification points and mark-scheme friendly points and answers.

The notes provide detailed and organised information about aromatic synthesis routes, including reactions of phenols and benzene rings. The summary is based of the OCR (A) book and several revision websites combining the main specification points and mark-scheme friendly points and answers.

The notes provide detailed, well- organised and colour coded information about phenol and its reactions. The summary is based of the OCR (A) book and several revision websites combining the main specification points and mark-scheme friendly points and answers.

Summary Notes from an A student including equations, diagrams, definitions, required practicals and examples of: - rate graphs - o,1,2 order reactions - continuous rate data - rate equation - calculating orders from experimental data - affect of temperature on rate constant - pressure - acids & bases - ionic product for water - equilibrium - mole fraction - weak acids - dilutions - buffers - calculating pH and pH change - titration curves -making buffers - heterogeneous vs ho...

Summary Notes from an A student including equations, diagrams, definitions, required practicals and examples of: - benzene - enthalpy of hydrogenation - nitration - bromination - chlorination - friedel-krafts alkylation and acylation - phenols - reactions of phenols - directing effects - benzene vs alkene reaction with Br2

Summary Notes from an A student including equations, diagrams, definitions, required practicals and examples of: - flowchart of all organic and aromatic synthesis reactions including conditions, processes and products - purification practical - melting point analysis - thin layer chromatography - reflux practical - filtration under reduced pressure - separating funnel diagram - distillation

Summary Notes from an A student including equations, diagrams, definitions, required practicals and examples of: - amino acids: diagrams and properties - isoelectric point - reactions of amino acids - amides: diagrams and properties - reactions of amides - chirality and optical isomerism

Summary Notes from an A student including equations, diagrams, definitions, required practicals and examples of: - forming nitriles from haloalkanes, aldehydes, ketones - reactions of nitriles - friedel-krafts alkylation and acylation

Summary Notes from an A student including equations, diagrams, definitions, required practicals and examples of: - carbonyls - carbonyls to alcohols and hydroxynitriles - testing for carbonyls - tollens test - reactions of carboxylic acids - esters - ester hydrolysis - acyl chlorides - reactions of acyl chlorides

Summary Notes from an A student including equations, diagrams, definitions, required practicals and examples of: - aliphatic compounds - alicyclic compounds - aromatic compounds - alkane - alkene - alcohol - haloalkane - aldehyde - ketone - carboxylic acid - ester - isomerism - homolytic vs heterolytic fission - radical substitution - electrophilic addition - addition polymerisation

Summary Notes from an A student including equations, diagrams, definitions, required practicals and examples of: - enthalpy change of reaction - activation energy - exothermic vs endothermic reactions - standard enthalpy change of formation - standard enthalpy change of combustion - standard enthalpy change of neutralisation - calorimetry - bond enthalpies of exothermic vs endothermic reactions - hess cycles - rates of reaction - collision theory - homogeneous and heterogeneous ca...

Summary Notes from an A student including equations, diagrams, definitions, required practicals and examples of: - primary, secondary and tertiary alcohols - oxidation reactions of alcohols - distillation - reflux - substitution - elimination - haloalkanes - nucleophilic substitution - CFCs and the ozone layer - the greenhouse effect - purifying an organic liquid - mass spectrometry

Summary Notes from an A student including equations, diagrams, definitions, required practicals and examples of: - periodicity - ionisation energy - groups 2-3 and groups 5-6 trends - metallic bonding - giant covalent structures - melting point trends - reactivity trends - solubility trends - the halogens - displacement reactions - halides - disproportionation reactions

OCR A A Level Chemistry Summary Notes from an A student including equations, diagrams, definitions, required practicals and examples of: - orbitals - subshells - ionic bonding - ionic compounds - covalent bonding - dative covalent bonding - average bond enthalpy - shapes of molecules (linear, non-linear, trigonal planar, trigonal pyramidal, tetrahedral, octahedral) - electronegativity - polar covalent bonds - polar molecules - intermolecular forces (london, permanent dipole - dipo...

Summary Notes from an A student including equations, definitions and examples of: - isotope - relative isotopic mass - relative atomic mass - avogradro's constant mole - empirical formula - molecular formula - stoichiometry - anhydrous structure - hydrated structure - water of crystallisation - gas equations - concentration equations - concentrated solution - dilute solution - atom economy

Summary Notes from an A student including equations, diagrams, definitions, required practicals and examples of: - relative atomic mass - writing ionic equations - amount of substance (moles, molar gas volume) - hydrated salts - concentration and diluted concentration - standard solution - ideal gas equation - avogadro's constant - percentage yield - atom economy - acids and bases - titrations - percentage uncertainty - redox reactions and equations

This workbook is designed to help you actively recall the key OCR A organic mechanisms by filling in the blanks yourself. Instead of passive revision, you’ll complete each mechanism stage — reactants, intermediates, products, and arrows — before checking against the answer booklet (sold separately). Fill-in-the-blanks format – forces active recall and deeper memory retention Covers OCR A organic mechanisms (nucleophilic substitution, electrophilic addition, elimination, etc.) Ori...

This booklet provides the fully worked answers to the Organic Mechanisms Fill-in-the-Blanks Workbook. It can be used on its own as a clear set of revision notes, or alongside the workbook for self-testing and active recall practice. Fully annotated answers – step-by-step arrows, intermediates, and explanations Covers all OCR A organic mechanisms (nucleophilic substitution, electrophilic addition, elimination, radical substitution, etc.) Clear diagrams & worked stages – perfect as qui...

These OCR A A-level Chemistry revision booklets cover Paper 1 content: Module 3 (Periodic Table & Energy) and Module 5 (Physical Chemistry & Transition Elements). They are written in a question-and-answer format to ensure active recall and strengthen exam technique. While primarily designed for Paper 1, these notes are also highly useful for Paper 3 (synoptic assessment), since Paper 3 draws heavily on Modules 3 and 5. The material is also relevant to AQA and Edexcel Chemistry, which share si...

Lecture notes for radical substitution of alkanes into haloalkanes in the presence of UV light for the A level OCR A specification