OCR A level Physics: Ideal Gas is a part of the Module 5: Newtonian World and Astrophysics. All presentations come with worked examples, solutions and homeworks.

OCR A level Physics: Chapter 22 Electric Fields is apart of the Module 6: Particle and Medical Physics All presentations come with worked examples, solutions and homeworks. 22.1 Electric Fields 22.2 Coulomb’s Law 22.3 Uniform electric fields and capacitance 22.4 Charged particles in uniformed electric fields 22.5 Electric potential and energy Electric field line pattern from point charges, uniformly charged objects, and capacitors. Rules for electric field lines Interacting field lines for attraction and repulsion Detecting electric fields with a charged gold leaf Definition of electric field strength Explaining that electric field strength is a vector with magnitude and direction Apply the equation for electric field strength Electric force related to the product of charge and square of the separation The constant of proportionality 𝑘 Permittivity of free space Experiment for investigating Coulomb’s Law Electric Field Strength and Coulomb’s Law Liquid crystal displays (LCDs) Electric field between two charged parallel plates Deriving an equation for electric field strength of a parallel plate capacitor. Accelerating charged particles in a uniformed electric field Capacitance of a parallel plate capacitor with an insulating (dielectric) material - relative permittivity Millikan’s experiment Equations for constant acceleration Maximum kinetic energy of a charged particle in a uniformed field Sketching trajectories for charged particles in uniformed fields Calculating velocities for horizontal and vertical components Definition of electric potential energy Definition of electric potential. Definition of electric potential difference. Using a force-distance graph to determine electric potential energy Using electron-volts and joules in calculations Capacitance of an isolated charged sphere

OCR AS level Physics presentations for module 3: Forces in Action. All presentations come with worked examples, solutions and homeworks. This covers topics from weight as a force to Archimedes’ principle.

Resources for P5 GCSE OCR Physics Gateway 9-1 Triple and Combined (Higher and Foundation) is covered in this material. Each lesson includes student activities and full worked answers. Definition of a wave Mechanical waves Electromagnetic waves Transverse waves Longitudinal waves Amplitude Wavelength Frequency Time period Calculating frequency and equation Relationship between frequency and wavelength when speed is constant. Calculating time period from frequency with equations The speed equation Measuring distance and time Simple experiment for the speed of sound Improving experiments Echoes Speed of sound experiment with microphones and oscilloscope. Ray diagrams Absorption, reflection and transmission Sonar Ultrasound Rearranging equation Refraction Relationship between wave speed and wavelength Structure of the ear. Frequency range of human hearing. Explanation of the limited frequency range of humans. Explanation for hearing deteriorating with age. Order of the electromagnetic spectrum Wavelength and frequency relationship Application of wave speed equation Rearranging equation Producing and detecting radio waves Recall that light is an electromagnetic wave Give examples of some practical uses of electromagnetic waves in the radio, micro-wave, infra-red, visible, ultraviolet, X-ray and gamma-ray regions Describe how ultra-violet waves, X-rays and gamma rays can have hazardous effects, notably on human bodily tissues. Explain that electromagnetic waves transfer energy from source to absorber to include examples from a range of electromagnetic waves Precautions for ultra-violet waves, X-rays and gamma rays Careers: Medical Physicist X-rays CT scans Gamma imaging Thermogram Magnetic Resonance Imaging Precautions for using ionising radiation Law of reflection Labeling and measuring angles of incidence and reflection Practical activity instructions - fully animated. Reflection, absorption, and refraction is affected by wavelength of electromagnetic wave. Refraction the change of velocity - speed and direction Magnitude of refraction depending on wavelength Magnitude of refraction depending on optical density Refraction practical activity instructions Wave speed, wavelength, and frequency relationship in refraction Convex and Concaves lenses Eyes and corrective lenses Refraction and wavelength Focal points for lenses Determining the type of images produced through a lens Names of colours for the visible spectrum Coloured filters Coloured objects acting as a coloured filters White light and refracting prism Refraction and wavelength Specular reflection Diffuse scattering Scattering - Why the sky is blue and milk is white.

All resources for P8.2 Powering Earth GCSE OCR Physics Gateway 9-1. Triple and combined (Higher and Foundation) is covered in this material. Key facts about the Big-Bang model Cosmic Microwave Background (CMB, CMBR) Doppler Red shift of light from stars in galaxies Hubble’s evidence of absorption spectra being red shifted Structure of the solar system Nuclear Fusion Evolution of large stars Evolution of Sun like stars Gravitational force and force from nuclear fusion Natural Satellites Geostationary Satellites Low Polar Orbit Satellites Speed is constant and velocity is changing in stable orbits. Changing speed and radius Gravitational force, acceleration, and speed. Plotting data and describing relationships 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. S and P waves Structure of the Earth Reflection, absorption, and refraction of waves Sonar to map the ocean floor

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 Molecular, empirical, skeletal formula for benzene. The Kekulé model for benzene Evidence against the Kekule model The delocalised model for benzene Nomenclature for benzene rings and aromatic (arene) compounds Naming benzene containing compounds Drawing benzene containing compounds 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 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 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 Chemistry: Aromatic Compounds is apart of the Module 6: Organic Chemistry and Analysis. All presentations come with worked examples, solutions and homeworks. 27.1 Amines 27.2 Amino acids, Amides and Chirality 27.3 Condensation Polymers Aliphatic and aromatic hydrocarbons Amines being derived from ammonia (NH3) Classifying amines as primary, secondary, and tertiary Naming amines Naming ammonium salts Amines neutralisation reactions with acids Preparation of aliphatic amines Preparation of aromatic amines Locants: alpha, beta, and gamma Functional groups of amino acids General formula for amino acids Reactions of amino acids (alkali and acid) Esterification of amino acids Amide functional groups Naming amide molecules Drawing optical isomers Explanation of superimposable and non-superimposable images Identifying chiral centers Recap of addition polymerisation Identifying monomers and repeat units from condensation polymers Polyesters and ester links Polyamides and amide links Polyesters and polyamides formed from one monomer Polyesters and polyamide formed from two monomers Alkali hydrolysis of polyamides and polyesters Acid hydrolysis of polyamides and polyesters