OCR A level Chemistry: Organic Synthesis is apart of the Module 6: Organic Chemistry and Analysis. All presentations come with worked examples, solutions and homeworks. 28.1 Carbon-Carbon Bond Formation 28.2 Further Practical Techniques 28.3 Further Synthetic Routes Forming nitriles from haloalkanes Forming nitriles from aldehydes and ketones Forming amines from nitriles (reduction) Forming carboxylic acids from nitriles (hydrolysis) Friedel-Crafts alkylation of benzene Acylation of benzene with acyl chloride Filtration under reduced pressure Purification through Recrystallisation Preparation of Melting Point Sample Melting point determination with an electric heater Melting point determination with a Thiele tube Functional groups Reactions of benzenes Reactions of phenols Common reactions between different functional groups Reaction conditions and reagents

OCR A level Chemistry: Aromatic Compounds is apart of the Module 6: Organic Chemistry and Analysis. All presentations come with worked examples, solutions and homeworks 26.1 Carbonyl Compounds 26.2 Identifying Aldehydes and Ketones 26.3 Carboxylic Acids 26.4 Carboxylic Acid Derivatives The carbonyl group Differentiating between aldehydes and ketones Naming aldehydes and ketones Oxidation of aldehydes Electronegativity and polar bonds Electrophiles, nucleophiles, and nucleophilic addition reactions Reducing carbonyl compounds with sodium tetrahydridoborate(III) (NaH4) Primary and secondary alcohols from carbonyl compounds Reacting carbonyl compounds with hydrogen cyanide (HCN) Reaction mechanisms for nucleophilic addition using (NaBH4) Reaction mechanisms for nucleophilic addition using (HCN) Testing for Carbonyl Groups Brady’s reagent - 2,4-dinitrophenylhydrazine - 2,4-DNP Distinguishing between Aldehydes and Ketones Tollen’s reagent - silver nitrate in aqueous ammonia The Carboxyl Group and polarity of bonds. Naming carboxylic acids Carboxylic acids as weak acids Reactions of carboxylic acids with: Metals Metal oxides Alkali Carbonates Changing solubility of carboxylic acids in water due to carbon chain length. Naming acyl chlorides Naming acid anhydrides Naming esters Esterification Acid hydrolysis of esters Alkali hydrolysis of esters Producing acyl chlorides from carboxylic acids Producing carboxylic acids from acyl chlorides Producing esters from acyl chlorides and phenols Primary, secondary, and tertiary molecules Producing primary amides from acyl chlorides Producing secondary amides with acyl chlorides Producing esters and carboxylic acids wirh acid anhydride

All resources for P2.3 GCSE OCR Physics Gateway 9-1.Triple and comined (Higher and Foundation) is covered in this material. Includes: • Stretching springs • Stretching materials and storing energy • Gravitational Fields and Potential Energy • Turning Forces • Simple Machines • Hydraulics

OCR A level Physics: Gravitational Fields is apart of the Module 5: Newtonian world and Astrophysics. All presentations come with worked examples, solutions and homeworks. 18.1 Gravitational Fields 18.2 Newton’s law of gravitation 18.3 Gravitational field strength for a point mass 18.4 Kepler’s laws 18.5 Satellites 18.6 Gravitational potential 18.7 Gravitational potential energy The terms: eccentricity, aphelion, perihelion, astronomical unit Kepler’s First Law Kepler’s Second Law Kepler’s Third Law Graphs of T^2 against r^3 to determine the gradient (constant of proportionality, k). Equating (4π)^2/𝐺𝑀 to the gradient (constant of proportionality, k) Key features of geostationary and low polar orbit satellites Conditions for stable orbits for satellites Applying Kepler’s laws to the orbits of satellites Radial and uniformed field Definition of gravitational potential energy Deriving escape velocity Force-Distance graphs for gravitational fields Center of mass and treating spherical objects as point masses Gravitational fields Definition of gravitational potential Applying the gravitational potential equation Graph of gravitational potential against distance (V against r) Combining gravitational potentials from more than one mass