This PowerPoint presentation with worked examples and student questions covers: • Rearranging Equations • Stoichiometry as relative abundances • Relative Atomic Mass, Relative Formula Mass and Molar Mass • Calculating the number of moles present • Conservation of mass

OCR A level Chemistry: 25.4 Directing Group This PowerPoint is a whole lesson included with student activities, animated answers, homework questions with answers provided. This lesson covers: 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 AS Physics A: Thermistor is a part of the Module 4: Electrons, Waves, and Photons. PowerPoint with worked examples and homework. Thermistor uses Thermistors with negative temperature coefficients Plotting I-V curves for thermistors Creating an experiment to test thermistors.

OCR AS Physics A: Potential Divider is a part of the Module 4: Electrons, Waves, and Photons. PowerPoint with worked examples and homework. Application of the ratio of resistances Application of the potential divider circuit Deriving the potential divider equation Rearranging the potential divider equation

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

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

OCR A level Chemistry: 26.1 Carbonyl Compounds This PowerPoint is a whole lesson included with student activities, animated answers, homework questions with answers provided. This lesson covers: The carbonyl group Differentiating between aldehydes and ketones Naming aldehydes and ketones Oxidation of aldehydes Electronegativity and polar bonds Electrophiles, nucleophiles, and nucleophilic addition reactions Reducing carbonyl compounds with sodium tetrahydridoborate(III) (NaH4) Primary and secondary alcohols from carbonyl compounds Reacting carbonyl compounds with hydrogen cyanide (HCN) Reaction mechanisms for nucleophilic addition using (NaBH4) Reaction mechanisms for nucleophilic addition using (HCN)

OCR AS level Physics: Kirchhoff’s Laws and circuit diagrams is a part of the Module 4: Electrons, Waves, and Photons. PowerPoint with worked examples and homework. Definitions of Kirchhoff’s 1st and 2nd Law Applying Kirchhoff’s 2nd Law Drawing circuit diagrams for parallel and series circuits

This presentation covers OCR Gateway Physics 9-1 P2.1.4. Plotting of distance-time graph Plotting of displacement-time graph Worked example for determining gradient of a line Comparing distance-time and displacement-time graphs

OCR AS level Physics: Circuit Symbols is a part of the Module 4: Electrons, Waves, and Photons. Presentation come with worked examples, solutions and homeworks. All circuit symbols required for OCR A level physics Polarity of cells and batteries Electron flow and conventional current

OCR AS level Physics: Conservation of Energy is a part of the Module 3: Work, Energy and Power. Presentation come with worked examples, solutions and homeworks.

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

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

OCR AS level Physics: Kinetic and Gravitational Potential Energy is a part of the Module 3: Work, Energy and Power. Presentation come with worked examples, solutions and homeworks.

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

OCR AS level Physics: Centre of mass is a part of the Module 3: Force and Motion Full lesson PowerPoint with worked examples and homework with complete worked answers.

OCR AS Physics A: Total Internal Reflection 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 P1.3.3 Atmospheric Pressure This presentation includes: Balanced and unbalanced forces Resultant force Changing atmospheric pressure Exam style question with mark scheme

This presentation covers OCR Gateway Physics 9-1 P2.2.1 Newton’s third law Contact and non-contact forces Exam style question with solution

This presentation covers OCR Gateway Physics 9-1 P2.3.2 • Spring Energy Equation • Rearranging equation with two methods • Problems and worked solutions • Exam style question and answer • Analysing force-extension graphs