OCR A level Chemistry: 25.4 Directing Group This PowerPoint is a whole lesson included with student activities, animated answers, homework questions with answers provided. This lesson covers: Naming positions on the aromatic ring Activating groups and deactivating groups 2-and-4-directing and 3-directing groups ortho-and-para directing and meta directing groups Two-step synthesis routes for benzene using directing groups. Nitration of benzene Halogenation of benzene Friedel-Crafts Alkylation of benzene

OCR A Level Physics:Newton’s Law of Gravitation presentation, homework and answers.

OCR A level Chemistry: 26.1 Carbonyl Compounds This PowerPoint is a whole lesson included with student activities, animated answers, homework questions with answers provided. This lesson covers: 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)

OCR AS Physics A: Electromagnetic Waves is a part of the Module 4: Electrons, Waves, and Photons. PowerPoint with worked examples and homework.

This presentation covers OCR Gateway Physics 9-1 P1.3.4 Liquid Pressure This presentation includes: Liquid pressure equation Worked solutions Exam style questions with answers Rearranging equations Incompressibility of liquids.

This presentation covers GCSE Physics OCR Gateway P2.2.2 Vector Addition 1D Vector Addition 2D - scaled drawings Vector Addition 2D - finding angles with a protractor Resultant vectors and acceleration Student problems with answers.

OCR AS level Physics: The electron gun is a part of the Module 4: Electrons, Waves, and Photons. Presentation come with worked examples, solutions and homeworks. The structure of an electron gun. The electron gun in the history of science (J.J. Thomson). Rearranging equations to equate kinetic energy and work done. Accelerating potential differences Comparing the protons and electrons accelerated in a potential difference.

OCR AS level Physics: Elastic Potential Energy is a part of the Module 3: Materials Presentation come with worked examples, solutions and homeworks.

OCR AS level Physics: Couples and Torques is a part of the Module 3: Forces and Motion Presentation come with worked examples, solutions and homeworks.

OCR AS level Physics: Linear Momentum is a part of the Module 3: Laws of Motion and Momentum. Presentations come with worked examples, solutions and homeworks.

OCR AS level Physics: Resistance and Resistivity is a part of the Module 4: Electrons, Waves, and Photons. PowerPoint with worked examples and homework. Factors affecting resistance Calculating resistivity Resistivity and temperature Experimentally determining resistivity Using a graph to calculate resistivity

OCR AS level Physics: Double Slit Experiment is a part of the Module 4: Electrons, Waves, and Photons. PowerPoint with worked examples and homework.

This presentation covers OCR Gateway Physics 9-1 P2.1.4. Plotting of distance-time graph Plotting of displacement-time graph Worked example for determining gradient of a line Comparing distance-time and displacement-time graphs

OCR AS level Physics: More Velocity-time Graphs is a part of the Module 3: Forces and Motion Presentation come with worked examples, solutions and homeworks.

OCR AS level Physics: Newton’s first and third law is a part of the Module 3: Laws of Motion and Momentum. Presentations come with worked examples, solutions and homeworks.

This PowerPoint presentation with worked examples and student questions covers: • Precipitation in chemical reactions • Definition of ions • Ionic Half equations • Dot and cross diagrams for electron structure • Introduction to full ionic equations and net ionic equations

This presentation covers OCR Gateway Physics 9-1 P2.2.1 Newton’s third law Contact and non-contact forces Exam style question with solution

This presentation covers OCR Gateway Physics 9-1 P2.3.2 • Spring Energy Equation • Rearranging equation with two methods • Problems and worked solutions • Exam style question and answer • Analysing force-extension graphs

OCR AS level Physics: Potential Difference and Electromotive Force is a part of the Module 4: Electrons, Waves, and Photons. Presentation come with worked examples, solutions and homeworks. Calculating the base SI units for volts Comparing potential difference and electromotive force (emf). Circuit diagrams for measuring potential difference and emf. Calculating energy dissipated in a circuit.

OCR AS level Physics: Quantities and Units is a part of the Module 2: Foundations of Physics Full lesson PowerPoint with worked examples and homework with complete worked answers. Overview of A level physics Base units and quantities Converting into base units Converting from base units into non-base units