OCR AS level Chemistry: Organic Synthesis is apart of the Module 4: Core Organic Chemistry and Analysis All presentations come with worked examples, solutions and homeworks Heating under reflux Distillation Re-distillation Purifying Organic Products Removing impure acids from organic compounds Drying agents Functional Groups - Alkane, Alkene, Haloalkane, Alcohols, Carboxylic Acid, Ketone, Aldehyde, Ester, Amine, Nitrile. One-step synthetic routes with reagents and conditions Two-step synthetic routes with reagents and conditions

OCR A level Physics: Chapter 23 Magnetic Fields is apart of the Module 6: Particle and Medical Physics All presentations come with worked examples, solutions and homeworks. 23.1 Magnetic fields 23.2 Understanding magnetic fields 23.3 Charged particles in magnetic fields 23.4 Electromagnetic induction 23.5 Faraday’s law and Lenz’s law 23.6 Transformers Attraction and repulsion of magnets Rules for magnetic field lines The magnetic field of Earth Applying the right-hand cork screw rule How to create uniformed magnetic fields Solenoids Fleming’s left hand rule Determining the direction of force on a current carrying conductor Calculating the magnitude of force on a current carrying conductor Angles between the magnetic field and current carrying conductor An experiment to determine the magnetic flux density of a field. Apply Fleming’s left-hand rule to charged particles Deriving an equation for the magnetic force experienced by a single charged particle (F = BQv) Charged particles describing (moving) in circular paths in magnetic fields. The velocity selector. The Hall probe and Hall voltage. Electromagnetic induction produces an induced e.m.f Conditions to produce electromagnetic induction How to increase electromagnetic induction Magnetic flux density, magnetic flux, and magnetic flux linkage Units of weber (Wb) Magnetic flux density and magnetic flux linkage Faraday’s Law Lenz’s Law Alternators and induced e.m.f. Graphs of flux linkage and induced e.m.f. Structure of transformers Step-up and step-down transformers The turn-ratio equation The ideal transformer equation Why transformers are used in the National Grid

Resources for C3.1 GCSE OCR Chemistry Gateway 9-1 Triple and Combined (Higher and Foundation) is covered in this material. Includes: Formulae of elements and molecules Formulae of ionic compounds Conservation of mass Chemical Equations Half equations and ionic equations The mole Mole calculations

All resources for P7.2 P7.2 Power and Efficiency GCSE OCR Physics Gateway 9-1. Triple and combined (Higher and Foundation) is covered in this material. All powerpoints include student activities and worked examples. Electrical Work Done Paying for Electricity Electrical Energy Transfers Electrical Heating Thermal Conductivity Efficiency and Sankey Diagrams

OCR A level Physics: Chapter 25 Radioactivity is apart of the Module 6: Particle and Medical Physics All presentations come with worked examples, solutions and homeworks. 25.1 Radioactivity 25.2 Nuclear decay equations 25.3 Half-life and Activity 25.4 Radioactive Decay Calculations 25.5 Modelling Radioactive Decay 25.6 Radioactive Dating Types of ionising radiation (alpha, beta-plus/beta-minus, gamma) Penetration power and ionising power Detecting radiation with a Geiger (GM tube) counter Background radiation and correct count rates Electric and magnetic fields affect ionising radiation Cloud chambers Typical speeds of radiation produced form nuclear decays Conservation rules for nuclear decays Nuclear notation Alpha decays Beta-minus and beat-plus decays Gamma decays Decay chains The reason why radioactive decays are considered random and spontaneous Rolling dice being a good analogue for radioactive decays Definition of half-life Determining half-life from a graph. Calculating half-life from a table of data. Activity of a sample in Bq The decay constant derivation Decay constant and half-life Using exponentials to calculate activity and number of nuclei present Solving Differential Equations (beyond A-level Physics course) Iterative Method Selecting appropriate time intervals Comparing answers from the iterative method and exact solution. State what isotopes of carbon are used in carbon dating. Explain how carbon dating works. Calculate the age of objects with carbon dating.