OCR A level Chemistry: 25.2 Electrophilic Substitution Reactions of Benzene This PowerPoint is a whole lesson included with student activities, animated answers, homework questions with answers provided. This lesson covers: Defining an electrophile Substitution reactions Nitration of Benzene Reaction mechanisms Halogenation of Benzene Common Halogen Carriers Friedel-Crafts Alkylation Reactions Acyl Chloride Acylation Reactions of Benzene Reactivity of Alkenes and Arenes

OCR A level Chemistry: 25.3 The Chemistry of Phenol This PowerPoint is a whole lesson included with student activities, animated answers, homework questions with answers provided. This lesson covers: Naming phenols Distinguishing between phenols and alcohols Distinguishing between phenols and alkenes Distinguishing between phenols and carboxylic acids Phenol as a weak acid Electrophilic reactions with phenols Comparing and explaining the reactivity of phenols and benzene

OCR A level Chemistry: 26.3 Carboxylic Acids This PowerPoint is a whole lesson included with student activities, animated answers, homework questions with answers provided. This lesson covers: 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.

OCR AS Chemistry: 16.1 Practical Techniques in Organic Chemistry This PowerPoint is a whole lessons included with student activities, animated answers, homework questions with answers provided. This lesson covers: Heating under reflux Distillation Re-distillation Purifying Organic Products Removing impure acids from organic compounds Drying agents

This presentation covers OCR Gateway Physics 9-1 P8.3.5 Inside our planet This PowerPoint is a whole lessons included with student activities and animated answers. S and P waves Structure of the Earth Reflection, absorption, and refraction of waves Sonar to map the ocean floor

This presentation covers OCR Gateway Physics 9-1 P8.3.4 Radiation and Temperature This PowerPoint is a whole lessons included with student activities and animated answers. All objects emit electromagnetic radiation Describe how changing temperature changes frequency, wavelength, and intensity of the radiation produced. Explain why objects change temperature by absorbing and emitting radiation. Explain why the temperature of the Earth changes due to greenhouse gases in the atmosphere.

OCR AS level Physics: Progressive 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 P8.2.1 Energy Sources This PowerPoint is a whole lessons included with student activities and animated answers. Types of different energy sources Renewable and non-renewable definitions Different uses of energy sources - transport, heating, and generating electricity Advantages and disadvantages of different energy sources Fossil fuels – oil, coal, and natural gas. Nuclear fuel – Uranium Biofuels – wood, biodiesel, and biogas. The sun - solar (PV) panels and solar heating panels Tides, Waves, Hydroelectricity Wind Geothermal

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

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

This presentation covers OCR Gateway Physics 9-1 P6.2.1 Radiation and the body This PowerPoint is a whole lessons included with student activities and animated answers. Background radiation definition Sources of background radiation Contamination and irradiation Medical examples of irradiation - X-rays, sterilisation, gamma knife Medical examples of contamination - Tracers Half-life and penetration power for radioactive tracers.

This presentation covers OCR Gateway Physics 9-1 P7.1.1 Energy stores Examples, units, and equations of each energy store: Kinetic Gravitational potential Elastic Thermal Magnetic Electrostatic Chemical Nuclear Student activities with full worked answers also included.

This PowerPoint presentation with worked examples and student questions covers: • Describing the limitations of the model: lack of forces between particles, size of particles, and space between the particles. • Mathematically comparing sizes and distances of particles

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

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.

OCR AS level Physics: Mean Drift Velocity is a part of the Module 4: Electrons, Waves, and Photons. Presentation come with worked examples, solutions and homeworks. Number density for conductors, semi-conductors, and insulators Calculating cross-sectional area Apply the mean drift velocity equation. Derivation of Mean Drift Velocity Equation

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

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: Drag and Terminal Velocity is a part of the Module 3: Forces and Motion Presentation come with worked examples, solutions and homeworks. Drag and speed relationship Free body diagrams Net forces and acceleration