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.

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

This PowerPoint presentation with worked examples and student questions covers: • Dalton, Thomson, Rutherford and Bohr’s models • Comparing different scientific models of the atom

This PowerPoint presentation with worked examples and student activities covers: Topic 1.2 of Science Fundementals of the OCR Applied Science Spec. Elements are based on atomic structure and can be classified by the Periodic Table i.e.: organisation of elements within the table groups periods atomic number atomic mass atomic radius

This PowerPoint presentation with worked examples and student questions covers: Definitions for solution, solute, solvent, insoluble, soluble. The technique of filtration The technique of crystallisation

This PowerPoint presentation with worked examples and student activities covers: Topic 6.2 of Module 1: Science Fundamentals of the OCR Applied Science Spec. Structure of metals, giant covalent, and simple molecular structures. Properties of metals, giant covalent, and simple molecular structures. Forces and bonds of metals, giant covalent, and simple molecular structures. Phase diagrams – interpreting and calculating changes. Sublimation and phase diagrams.

This PowerPoint presentation with worked examples and student activities covers: Topic 6.3 of Module 1: Science Fundamentals of the OCR Applied Science Spec. Current as flow of charge in a conductor. Use the equation: I = ΔQ ÷ Δt Ohm’s law illustrates the relationship of V ∝ I Use the equation: potential difference (V) = current (A) × resistance Use the equations for adding resistors in series and parallel Compare electromotive force and potential difference Use the equation: charge © = current (A) × time (s) Use and recognise the equation for mean drift velocity Use the equation: energy transferred (work done) (J) = charge © × potential difference (V) Use the equation: energy transferred (J, kWh) = power (W, kW) × time (s, h) Use the equation: power (W) = energy (J) ÷ time (s)

This PowerPoint presentation with worked examples and student activities covers: Topic 4.4 of Module 1: Science Fundamentals of the OCR Applied Science Spec. Complex carbohydrates (starch, glycogen, cellulose) • Carbohydrates found as monosaccharides, disaccharides, or polysaccharides (monomers, dimers or polymers) • Monomers held together by glycosidic bonds to form dimers and polymers, via condensation reactions • Monosaccharides include glucose, fructose and galactose • Disaccharides include maltose, sucrose and lactose • Polysaccharides include starch, glycogen and cellulose • Cellulose is found in plant cell walls where it provides strength/support and pliability • Starch and glycogen are energy sources Proteins and peptides from amino acids • Dipeptides are formed from two amino acids joined by a peptide bond, via a condensation reaction • Polypeptides are chains of amino acids joined by peptide bonds • Proteins/polypeptides have physiological or functional roles, including enzymes, carrier proteins in the plasma membrane, and structural roles, including collagen and elastin fibres in connective tissue Lipids from fatty acids, glycerol and phosphorus compounds • Monoglycerides, diglycerides and triglycerides are esters of fatty acids and glycerol • An ester bond forms between each fatty acid and the glycerol, via condensation reactions • Phospholipids contain glycerol plus two fatty acids and a phosphate group • Lipids act as an energy source within cells, as an insulation layer around animal organs, in the myelin sheath (found around some nerve fibres/axons) to increase speed of nerve transmission • Phospholipids form a bilayer in the plasma membrane Protein synthesis (transcription, translation) RNA, messenger, ribosomal and transfer • The nucleic acids, DNA and RNA, are polymers of nucleotides • Peptide bonds form between amino acids to create polypeptide chains/proteins • Recall a simple description of protein synthesis

This PowerPoint presentation with worked examples and student questions covers: • Filled outer shells result in more stable electronic structures. • The electronic configuration ionic compounds • Models of giant ionic structures

This PowerPoint presentation with worked examples and student questions covers: • State a use for metals • Describe the structure of metals • Why metals make good electrical conductors. • Metals on the periodic table

OCR Applied Science Level 3 - Module 21: Product Testing Techniques. This PowerPoint presentation with worked examples and student activities covers: Topic 2.1 of Module 21: Product Testing Techniques. 2.1 Types of testing i.e.: • in-vitro • in-vivo • titration • extraction and separation

This PowerPoint presentation with worked examples and student questions covers: • State the number of electrons in each energy level. • Determine what type of ion an atom would form. • Calculate the ionic charge an atom would form with use of the periodic table. • Groups number, outer shell electrons, dot and cross diagrams

This PowerPoint presentation with worked examples and student questions covers: Tests for Hydrogen, Oxygen, Carbon Dioxide, Chlorine. Gifs of each gas test Electron structure for diatomic molecules

This PowerPoint presentation with worked examples and student questions covers: Proteins as polymers and amino acids as monomers Carbohydrates and simple sugars Comparing simple sugars (glucose, fructose, and sucrose) with complex carbohydrates (starch). DNA as a polymer and nucleotides as monomers Structure of nucleotides (phosphate group, a sugar (deoxyribose), and an organic base). Base pairing in DNA and hydrogen bonds

This revision PowerPoint should take approximately 5 hours of class time to complete. This PowerPoint covers GCSE OCR Physics Gateway 9-1. Triple and combined (Higher and Foundation) is covered in this material. ** P2.1 Motion:** Distance, time and speed Vectors and Scalars Acceleration Distance-time graphs Velocity-time graphs Kinetic Energy ** P2.2 Newton’s Laws:** Forces and Interactions Free Body Diagrams Newton’s First Law Newton’s Second Law Everyday Forces Momentum Work Done and Power P2.3 Forces in Action: Stretching springs Stretching materials and storing energy Gravitational Fields and Potential Energy Turning Forces Simple Machines Hydraulics

This presentation covers OCR Gateway Physics 9-1 P5.3.2a Electromagnetic Reflection. Includes student activities and full worked answers. 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

OCR AS Chemistry: 13.2 Stereoisomerism This PowerPoint is a whole lessons included with student activities, animated answers, homework questions with answers provided. This lesson covers: E/Z isomerism Conditions for trans- and cis- isomerism Cahn-Ingold-Prelog rules and priority ordering