Resources for P5.1 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. Includes: 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.

OCR AS level Chemistry: Alkanes is apart of the Module 4: Core Organic Chemistry and Analysis All presentations come with worked examples, solutions and homeworks

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.

OCR AS level Chemistry: Alkenes is apart of the Module 4: Core Organic Chemistry and Analysis All presentations come with worked examples, solutions and homeworks Comparing pi-bond (π-bond) and sigma bonds (σ-bonds). Aliphatic alkenes and alicyclic arrangements of molecules s, p, d orbitals for electrons Trigonal planar shape of alkanes leading to 120 degree bond angle. E/Z isomerism Conditions for trans- and cis- isomerism Cahn-Ingold-Prelog rules and priority ordering Alkene addition reactions: Hydrogen with a nickel catalyst Halogens Hydrogen halide Steam with an acid catalyst Test for unsaturated alkenes. Bond enthalpy for sigma and pi bonds. Electrophile molecules Electronegativity Reaction mechanisms for addition reaction of alkenes and hydrogen halides Carbocations and stability Markownikoff’s Rule 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