This PowerPoint presentation with worked examples and student activities covers: Topic 6.1 of Module 1: Science Fundamentals of the OCR Applied Science Spec. • Interpreting laboratory tests for stress-strain graphs and Young’s modulus • Awareness that repeated loading cycles may cause failure by fatigue below the yield strength • Use of diagrams to understand that the way molecules are arranged in polymers determines the properties: chain length, crosslinking, use of plasticizers and crystallinity. • Use and rearranging of the density equation.

OCR A level Physics: 19.4 Energy Levels in Atoms Module 5 Newtonian World and Astrophysics This PowerPoint is a whole lesson included with student activities, animated answers, homework questions with answers provided. This lesson covers: Atoms have different electron arrangements Ground state energy Bound electron states being negative Converting between joules and electronvolts Calculating the change of energy between energy states Calculating a photon’s frequency and wavelength

OCR A level Physics: 19.2 Life Cycles of Stars Module 5 Newtonian World and Astrophysics This PowerPoint is a whole lesson included with student activities, animated answers, homework questions with answers provided. This lesson covers: Calculating mass in kg from solar mass Life cycle of stars with a mass between 0.5 and 10 solar masses Life cycle of stars with a mass above 10 solar masses Pauli exclusion principle and electron degeneracy pressure Red giants and white dwarfs The Chandrasekhar limit Red supergiants to black holes and neutron stars Stellar nucleosynthesis

This PowerPoint presentation with worked examples and student activities covers: Topic 1.1 of Science Fundementals of the OCR Applied Science Spec. nucleus contains protons and neutrons surrounded by electrons relative masses and charges nuclear and atomic diameters nucleon number, proton number and isotopes proton number defines the type of atom nuclear notation attractive and repulsive forces within the nucleus

This PowerPoint presentation with worked examples and student questions covers: • Reaction profiles for exothermic and endothermic • Energy stores of particles and surroundings • Activation energy • Describing the main features of reaction profiles.

OCR AS Chemistry: 13.5 Polymerisation of Alkenes This PowerPoint is a whole lessons included with student activities, animated answers, homework questions with answers provided. This lesson covers: Monomers and repeat units Addition Polymerisation for: Polyethene Polypropene Polylactate Polystyrene Polyvinyl Chloride (PVC) Environmental Concerns from polymers including: Combustion of polymers recycling PVC biogradeable bioplastics photodegradable polymers feedstock recycling

This PowerPoint presentation with worked examples and student questions covers: Definitions for anions, cations, anodes, cathodes. Tests for carbonate ions Tests for sulfate ions Tests for halide ions

OCR A level Physics: 19.3 Hertzsprung-Russell Diagram Module 5 Newtonian World and Astrophysics This PowerPoint is a whole lesson included with student activities, animated answers, homework questions with answers provided. This lesson covers: Definition of luminosity Usual axis choice of a HR diagram. Identifying the positions of the main sequence, white dwarfs, red giants, and red supergiants. Description of how stellar evolution is shown in a Hertzsprung-Russell diagram.

OCR A level Physics: 19.1 Objects in the Universe Module 5 Newtonian World and Astrophysics This PowerPoint is a whole lesson included with student activities, animated answers, homework questions with answers provided. This lesson covers: The size of astronomical objects: Universe, Galaxies, Solar systems, Stars, Planets, Planetary satellites, Comets, Artificial planetary satellites Comparing planets and comets The birth of stars Stars in equilibrium during the main sequence

This presentation covers OCR Gateway Physics 9-1 P3.1.2 Electrical Current Electron flow and conventional current Measuring current with ammeters Series and parallel circuits Comparing current at junctions

OCR A level Physics: 18.4 Kepler’s Laws This PowerPoint is a whole lesson included with student activities, animated answers, homework questions with answers provided. This lesson covers: 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)

OCR A level Physics: 18.5 Satellites Module 5 Newtonian World and Astrophysics This PowerPoint is a whole lesson included with student activities, animated answers, homework questions with answers provided. This lesson covers: Key features of geostationary and low polar orbit satellites Conditions for stable orbits for satellites Applying Kepler’s laws to the orbits of satellites

OCR A level Physics: 18.6 Gravitational Potential Module 5 Newtonian World and Astrophysics This PowerPoint is a whole lesson included with student activities, animated answers, homework questions with answers provided. This lesson covers: 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

OCR A level Physics: 18.7 Gravitational Potential Energy Module 5 Newtonian World and Astrophysics This PowerPoint is a whole lesson included with student activities, animated answers, homework questions with answers provided. This lesson covers: Radial and uniformed field Definition of gravitational potential energy Deriving escape velocity Force-Distance graphs for gravitational fields

OCR A level Chemistry: 29.4 Proton NMR Spectroscopy This PowerPoint is a whole lesson included with student activities, animated answers, homework questions with answers provided. This lesson covers: Identifying the number of different proton environments Identifying the types of proton environment and chemical shifts Integration traces (area of peaks) and relative number of protons The spin-spin splitting pattern (n + 1)

OCR A level Chemistry: 29.2 Nuclear Magnetic Resonance (NMR) Spectroscopy This PowerPoint is a whole lesson included with student activities, animated answers, homework questions with answers provided. This lesson covers: Nuclear Spin Resonance Tetramethylsilane (TMS) Chemical Shift ẟ

OCR A level Chemistry: 27.3 Condensation Polymers This PowerPoint is a whole lesson included with student activities, animated answers, homework questions with answers provided. This lesson covers: 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

OCR A level Chemistry: 29.5 Interpreting Proton NMR Spectra This PowerPoint is a whole lesson included with student activities, animated answers, homework questions with answers provided. This lesson covers: Predicting proton NMR spectra for molecules Identifying the number of different proton environments Identifying the types of proton environment and chemical shifts Integration traces (area of peaks) and relative number of protons The spin-spin splitting pattern (n + 1)

This presentation covers OCR Gateway Physics 9-1 P3.2.8 Electrical Power. Definition of power Standard form for kW and MW The three equations for power Rearranging electrical power equations Derivation of P = I^2 R with subsitution Students questions and worked solutions

OCR A level Chemistry: 27.2 Amino acids, Amides and Chirality This PowerPoint is a whole lesson included with student activities, animated answers, homework questions with answers provided. This lesson covers: 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