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I am a very experienced chemistry teacher and have produced many quality resources which have been extensively tested in the classroom. My resources aim to engage the students and lighten the planning load for the teacher. A distinctive feature is the use of unique images, often animated, to explain concepts. The resources include interactive PowerPoints, activities and games, quizzes, worksheets with answers and exam style questions. Please review my resources!

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I am a very experienced chemistry teacher and have produced many quality resources which have been extensively tested in the classroom. My resources aim to engage the students and lighten the planning load for the teacher. A distinctive feature is the use of unique images, often animated, to explain concepts. The resources include interactive PowerPoints, activities and games, quizzes, worksheets with answers and exam style questions. Please review my resources!
Ionic bonding OCR AS Chemistry
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Ionic bonding OCR AS Chemistry

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This complete year 12 lesson on ionic bonding includes dot-and-cross diagrams, giant ionic lattices and the physical properties of ionic compounds. It features a 51 slide animated PowerPoint that illustrates the concepts in a lively and visual way and includes a starter, learning checks, animations, clearly explained examples including dot-and-cross diagrams, and a plenary quiz. An 11 page worksheet and answers to the exercises are provided. This resource is part of a series covering the OCR AS Chemistry specification and relates to the following sections: Module 2 – Foundations in chemistry Part 2 – Electrons, bonding and structure 2.2.2 Bonding and structure Content covered: • Ionic bonding and the Periodic Table • Predicting ionic formulae • Definition of ionic bonding • Dot-and-cross diagrams – some of them animated • Half equations • Giant ionic lattice • Physical properties of ionic compounds including o melting point o electrical conductivity o solubility in polar and non-polar solvents Duration: 1-2 lessons Please review! Links Previous topic: Topic 14 – Electron configuration – shells, sub-shells and orbitals OCR AS Chemistry https://www.tes.com/teaching-resource/resource-12207312 Next topic: Topic 16 – Covalent bonding OCR AS Chemistry https://www.tes.com/teaching-resource/resource-12605422
Determining formulae OCR AS Chemistry
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Determining formulae OCR AS Chemistry

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This complete year 12 resource (1-2 lessons) on determining formulae is ideal for classroom or home learning and includes calculating empirical formulae, molecular formulae and formulae of hydrated salts. It features a 37 slide interactive PowerPoint that aims to illustrate the concepts in a visual and systematic way and includes a starter, learning checks, clearly explained example calculations, and a plenary. A 13 page worksheet, a lesson plan and answers to all exercises are provided. This lesson is part of a series covering the OCR AS Chemistry specification and relates to the following sections: Module 2 – Foundations in chemistry Part 1 – Atoms and reactions 2.1.3 – Amount of substance Content covered: • Definitions and use of the terms empirical and molecular formula • Simplest whole number ratios • Calculations of empirical and molecular formulae, from composition by mass or percentage compositions by mass and relative molecular mass • Calculating % by mass from the formula • The terms anhydrous, hydrated and water of crystallisation • Calculation of the formula of a hydrated salt from given percentage composition, mass composition or based on experimental results Duration: 1-2 lessons Please review! Links Previous lesson: Topic 5 - Amount of substance and the mole https://www.tes.com/teaching-resource/amount-and-moles-ocr-as-chemistry-12190652 Next lesson: Topic 7 – Moles and gas volumes https://www.tes.com/teaching-resource/moles-and-gas-volumes-ocr-as-chemistry-12336053 Free resource - standard form, decimal places and significant figures https://www.tes.com/teaching-resource/standard-form-decimal-places-and-significant-figures-a-level-chemistry-12405507
Experimental determination of enthalpy changes OCR AS Chemistry
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Experimental determination of enthalpy changes OCR AS Chemistry

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This complete year 12 lesson on experimental determination of enthalpy changes covers part of OCR section 3.2.1 (Enthalpy changes). It includes the energetics topics: calorimetry, associated errors, and calculations involving q = mc∆T . It features a 36 slide interactive PowerPoint that illustrates the concepts in a lively, visual and systematic way and includes a starter, learning checks, clearly explained examples, including example calculations ,and a plenary quiz. A 12 page worksheet and answers to the exercises are provided. This resource is part of a series covering the OCR AS Chemistry specification and relates to the following sections: Module 3 – Periodic table and energy Part 2 – Physical chemistry 3.2.1 – Enthalpy changes Content covered: • Energy exchange with the surroundings - heat loss in a chemical system = heat gain by surroundings • Temperature scales • Determining enthalpy changes using calorimetry • Calculations involving q = mc∆T . • Determining enthalpy changes in solution • Determining enthalpy of combustion • Errors associated with calorimetry experiments and how to minimise them • Cooling curves and how to find the temperature rise • Thermometric titration Duration: 1 lesson Please review! Links Previous topic: Topic 25 – Enthalpy changes (free resource) https://www.tes.com/teaching-resource/enthalpy-changes-ocr-as-chemistry-12509439 Next topic: Topic 27 – Bond enthalpies https://www.tes.com/teaching-resource/resource-12595300 Free resource - standard form, decimal places and significant figures https://www.tes.com/teaching-resource/resource-12405507
Hess’ Law OCR AS Chemistry
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Hess’ Law OCR AS Chemistry

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This complete year 12 lesson on Hess’s Law covers part of OCR section 3.2.1 (Enthalpy changes). It includes the following energetics topics: Hess’ Law, enthalpy cycles and their use in calculating enthalpy changes indirectly. It features a 39 slide animated PowerPoint that illustrates the concepts in a lively, visual and systematic way and includes a starter, learning checks, clearly explained examples, including example calculations ,and a plenary activity. An 18 page worksheet and answers to the exercises are provided. This resource is part of a series covering the OCR AS Chemistry specification and relates to the following sections: Module 3 – Periodic table and energy Part 2 – Physical chemistry 3.2.1 – Enthalpy changes Content covered: • Hess’ Law • Indirect determination of enthalpy changes • Enthalpy cycles • Calculating enthalpy changes from enthalpy changes of combustion • Calculating enthalpy changes from enthalpy changes of formation • Summary of types of enthalpy calculation • Calculating enthalpy changes from unfamiliar enthalpy cycles Duration: 2 lessons Please review! Links Previous topic: Topic 27 – Bond enthalpies OCR AS chemistry https://www.tes.com/teaching-resource/resource-12595300 Next topic: Topic 29 – Rates of reaction and collision theory (in preparation) Free resource - standard form, decimal places and significant figures https://www.tes.com/teaching-resource/resource-12405507
Acid-base titrations OCR AS Chemistry
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Acid-base titrations OCR AS Chemistry

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This complete year 12 resource on acid-base titrations includes the practical procedure and calculations for titrations as well as details of evaluating experiments. It features a 28 slide interactive PowerPoint that illustrates the concepts in a lively, visual and systematic way. The resource includes a starter, learning checks, clearly explained examples of calculations, a practical activity with evaluation and a plenary. A 20 page worksheet includes a variety of structured and unstructured calculations and answers to all exercises. Ideal for the classroom or blended learning, this resource could be used to present the topic, or for revision, extension or consolidation. This lesson is part of a series covering the OCR AS Chemistry specification and relates to the following sections: Module 2 – Foundations in chemistry Part 1 – Atoms and reactions 2.1.4 – Acids (part) Content covered: • Titration and uses • Standard solution • Glassware and procedure for titration with detailed hints for technique • Reading burette • Recording titration results and calculating the mean • Titration calculations • Examples of structured and unstructured calculations • Revision of calculations involving masses and volumes • Practical titration activity • Evaluation of titration experiment • Uncertainties and calculating % uncertainties • Procedural errors Duration: 2 lessons Please review! Links Previous topic: Topic 11 – Acids and bases (free resource) https://www.tes.com/teaching-resource/acids-and-bases-ocr-as-chemistry-12747201 Next topic: Topic 13 – Redox https://www.tes.com/teaching-resource/redox-ocr-as-chemistry-12409890 Related topics Topic 8 − Moles and concentration of solutions https://www.tes.com/teaching-resource/moles-and-concentration-of-solutions-ocr-as-chemistry-12391026 Topic 9 – Moles and reactions https://www.tes.com/teaching-resource/moles-and-reactions-ocr-as-chemistry-12404411 Bundle − Moles, masses, concentrations, gas volumes and reactions https://www.tes.com/teaching-resource/moles-masses-concentrations-gas-volumes-and-reactions-12404451
The Changing Atom OCR AS Chemistry
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The Changing Atom OCR AS Chemistry

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Serving as an introduction to atomic structure, this lesson on the Changing Atom includes all the materials needed for a group activity on the contributions of key scientists to the development of the theory of atomic structure. It features an interactive PowerPoint including starter, group activity, questions and plenary along with a worksheet and a lesson plan. This is the first lesson in a series covering the OCR AS Chemistry specification and relates to the following sections: Module 2 – Foundations in chemistry Part 1 – Atoms and reactions 2.1.1 Atomic structure and isotopes Please review! Content covered How Science Works - HSW7 - The changing accepted models of atomic structure over time. The contributions of five scientists to the development of the theory of atomic structure. Duration : One part lesson (setting up) and one whole lesson (group activity and plenary). The rest of the part lesson can be spent starting atomic structure (see atomic structure lesson) Links Next lesson – Atomic structure Bundle covering the whole of the OCR A level chemistry specification sections 2.1.1 and 2.1.2. (topics 1-4) https://www.tes.com/teaching-resource/atomic-masses-formulae-and-equations-ocr-as-chemistry-12348685
Acids and bases OCR AS Chemistry
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Acids and bases OCR AS Chemistry

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This complete year 12 resource on acids, bases, alkalis, neutralization and salts includes formulae of acids, bases, alkalis and salts, equations for neutralization reactions and ionic equations. It features a 39 slide interactive PowerPoint that illustrates the concepts in a lively, visual and systematic way and includes a starter, learning checks, clearly explained examples of writing and balancing equations, and a quick quiz as plenary. A 17 page worksheet and answers to all exercises are provided. Ideal for the classroom or blended learning, this resource could be used to present the topic, or for revision, extension or consolidation. This lesson is part of a series covering the OCR AS Chemistry specification and relates to the following sections: Module 2 – Foundations in chemistry Part 1 – Atoms and reactions 2.1.4 – Acids (part) Content covered: • Definitions of acid, base, alkali and salt • Formulae of acids, bases, alkalis and salts • The relationship between bases and alkalis • The pH scale • Everyday examples of acids and bases • Weak and strong acids • Diprotic acids • Writing and balancing neutralization reactions (including acid-carbonate reactions) • Ionic equations Duration: 1-2 lessons Please review! Links Previous topic: Topic10 – Percentage yield and atom economy https://www.tes.com/teaching-resource/percentage-yield-and-atom-economy-ocr-as-chemistry-12745344 Next topic: Topic 12 – Acid-base titrations https://www.tes.com/teaching-resource/acid-base-titrations-ocr-as-chemistry-12749636 Related topic: Topic 4 - Formulae and equations https://www.tes.com/teaching-resource/formulae-and-equations-ocr-as-chemistry-12186723
Chemistry of alcohols summary – AS home learning
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Chemistry of alcohols summary – AS home learning

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One of a series of FREE resources designed to help AS Chemistry students to finish the AS specification by self-study before starting the A2 year. This knowledge organiser/poster/mat summarises all the important information about the chemistry of alcohols in a colourful and concise way. It can be printed on one A4 page. For a more detailed treatment of the topic see Chemistry of Alcohols – AS homelearning https://www.tes.com/teaching-resource/chemistry-of-alcohols-as-home-learning-12273938, which includes an interactive, animated PowerPoint and a worksheet with answers. Please review! Content covered • Primary, secondary and tertiary alcohols • Substitution reaction of alcohols • Oxidation of alcohols • Elimination (dehydration) reaction of alcohols • Reactions of primary, secondary and tertiary alcohols • Reaction classification • Reagents and conditions • Structural equations • Key definitions • Heating under reflux • Distillation to prevent complete oxidation
Multiple choice questions Atomic Structure AS
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Multiple choice questions Atomic Structure AS

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This is the first in a series of MULTIPLE CHOICE QUIZZES (MCQs) for AS Chemistry, provided in two formats – PowerPoint for a fun classroom activity and a paper quiz for assessment or homework. Either quiz would be an invaluable tool for revision. The questions are graded – starting off fairly straightforward and progressing to more challenging examples. A, B, C, D cards for students to hold up in class can be made from the template provided. This multiple choice quiz on atomic structure is part of a series primarily aimed at the OCR AS Chemistry specification and relates to the following sections: Module 2 – Foundations in chemistry Part 1 – Atoms and reactions 2.1.1 Atomic structure and isotopes Please review! Content covered • Protons, neutrons and electrons – mass and relative charge • Atomic number and mass number • Isotopes • Key definitions Links Next multiple choice quiz: Atomic masses (in preparation) For full lesson on Atomic Structure with PowerPoint and worksheet see https://www.tes.com/teaching-resource/atomic-structure-ocr-as-chemistry-12182593
Atomic Structure AS Active revision
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Atomic Structure AS Active revision

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This is the first in a series of ACTIVE REVISION SHEETS for AS Chemistry, designed to help students actively learn by filling in blanks and testing themselves as part of their revision. Each revision sheet consists of alternating A4 question and answer pages. The question pages have gaps and tables to fill in, as well as quick check questions. The answer pages have the same format, but with all the blanks filled in and answers to all questions. The question and answer pages should be printed back to back on A4 or side by side on A3 or A4 (reduced) – in the latter case the sheets should be folded in half to hide the answers. Ideal for self-study or classroom use, students can complete the question pages before looking at the answers to check their learning. Learning outcomes and tick boxes for each outcome are also provided. This 4 page revision sheet on atomic structure is part of a series primarily aimed at the OCR AS Chemistry specification and relates to the following sections: Module 2 – Foundations in chemistry Part 1 – Atoms and reactions 2.1.1 Atomic structure and isotopes Please review! Content covered • Protons, neutrons and electrons – mass and relative charge • Atomic number and mass number • Isotopes • Key definitions Links Next revision sheet: Atomic masses https://www.tes.com/teaching-resource/atomic-masses-as-active-revision-12251537 For full lesson with PowerPoint and worksheet see https://www.tes.com/teaching-resource/atomic-structure-ocr-as-chemistry-12182593
Electronegativity and bond polarity OCR AS Chemistry
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Electronegativity and bond polarity OCR AS Chemistry

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This complete year 12 lesson on electronegativity and bond polarity includes electronegativity, core charge, non-polar and polar covalent bonds and predicting the polarity of molecules from the bond polarities and the molecular shape. It features a 23 slide animated PowerPoint that illustrates the concepts in a lively and visual way and includes a starter, learning checks, animations, clearly explained examples and a plenary. A 6 page worksheet and answers to the exercises are provided. This resource is part of a series covering the OCR AS Chemistry specification and relates to the following sections: Module 2 – Foundations in chemistry Part 2 – Electrons, bonding and structure 2.2.2 Bonding and structure Content covered • Definition of electronegativity • Atomic core and calculation of core charge • Factors affecting electronegativity • Pauling scale of electronegativity • Electronegativity and bond polarity • Non-polar and polar covalent bonds • Electronegativity and bonding type (including intermediate bonding) • Polarity of molecules from the bond polarities and the molecular shape • Predicting whether a molecule will have an overall dipole from its symmetry Duration: 1 lesson Please review! Links Previous topic: Topic 17 – Shapes of molecules and ions OCR AS Chemistry https://www.tes.com/teaching-resource/resource-12220291 Next topic: Topic 19 Intermolecular forces https://www.tes.com/teaching-resource/intermolecular-forces-ocr-as-chemistry-12927621
Organic reagents and types of reaction OCR AS Chemistry
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Organic reagents and types of reaction OCR AS Chemistry

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This complete year 12 lesson on organic reagents and types of reaction covers part of OCR section 4.1.1 (Basic concepts of organic chemistry). Covering types of bond fission, reagents, and an introduction to reaction mechanisms, it features a 47 slide animated PowerPoint along with a 10 page workbook. There is a starter activity and a multiple choice quiz is also included as a plenary. Exam tips and answers to all exercises are provided. Ideal for the classroom or blended learning, this resource could be used as an introduction to the topic, or for revision, extension or consolidation. This lesson is part of a series covering the OCR AS Chemistry specification and relates to the following part of the specification: Module 4 – Core organic chemistry Part 1 – Basic concepts and hydrocarbons 4.1.1 Basic concepts of organic chemistry Content covered: • Ways of breaking covalent bonds o Homolytic fission o Heterolytic fission • Types of organic reagents and their reactions o Nucleophiles o Electrophiles o Radicals • Introduction to mechanisms • Curly arrows • Types of reaction o Addition o Substitution o Elimination • Classification of reactions Duration: 1 lesson Please review! Links Previous lesson: topic 43 – Isomerism https://www.tes.com/teaching-resource/resource-12634065 Next lesson: topic 45 – Introduction to alkanes https://www.tes.com/teaching-resource/introduction-to-alkanes-ocr-as-chemistry-12654263
Isomerism OCR AS Chemistry
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Isomerism OCR AS Chemistry

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This complete year 12 lesson on structural isomers and stereoisomers covers part of OCR sections 4.1.1 (Basic concepts of organic chemistry) and 4.1.3 (Alkenes). It features a 58 slide animated PowerPoint as well as a starter activity and plenary along with a 16 page workbook. There are several activities involving model building and a multiple choice quiz is also included as a learning check. Exam tips and answers to all exercises are provided. Ideal for the classroom or blended learning, this resource could be used as an introduction to the topic, or for revision, extension or consolidation. Note: this resource does not cover optical isomerism. This will be dealt with in a later A2 topic. This lesson is part of a series covering the OCR AS Chemistry specification and relates to the following part of the specification: Module 4 – Core organic chemistry Part 1 – Basic concepts and hydrocarbons 4.1.1 Basic concepts of organic chemistry and 4.1.3 Alkenes Content covered: • Shapes of alkanes (with model building) • Definitions of structural isomers, stereoisomers, E/Z isomers and cis-trans isomers • Classification of isomers with examples • Structural isomers including chain, position and functional group isomers • Shapes of alkenes (with model building) • Restricted rotation around the C=C double bond • Stereoisomers – E/Z and cis-trans isomers • Animated illustrations of E/Z isomers • Criteria for E/Z isomerism and for cis-trans isomerism with examples and learning check • Cahn-Ingold-Prelog rules for naming E/Z isomers with examples Duration: 1 lesson Please review! Links Previous lesson: topic 42 – Functional groups – names and formulae - OCR AS Chemistry https://www.tes.com/teaching-resource/resource-12624555 Next lesson: topic 44 – Organic reagents and types of reaction - OCR AS Chemistry https://www.tes.com/teaching-resource/organic-reagents-and-types-of-reaction-ocr-as-chemistry-12643937
Electronegativity, intermolecular forces and structure
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Electronegativity, intermolecular forces and structure

3 Resources
This bundle is ideal for classroom or home learning and covers electronegativity and bond polarity, intermolecular forces and structure and bonding. It includes part of the OCR A level chemistry specification section 2.2.2 and part of 3.1.1. Each topic includes a fully interactive PowerPoint including starter, group activities, questions and plenary along with a worksheet. Answers to all exercises are provided. Some of the resources include a PowerPoint quiz. Content covered: Electronegativity and bond polarity • Definition of electronegativity • Atomic core and calculation of core charge • Factors affecting electronegativity • Pauling scale of electronegativity • Electronegativity and bond polarity • Non-polar and polar covalent bonds • Electronegativity and bonding type (including intermediate bonding) • Polarity of molecules from the bond polarities and the molecular shape • Predicting whether a molecule will have an overall dipole from its symmetry Intermolecular forces • What are intermolecular forces? • Strengths of bonds and intermolecular forces • Types of intermolecular forces • Induced dipole-dipole interactions (London (dispersion) forces) • How London forces arise • Factors affecting strength of London forces • Permanent dipole-dipole interactions • How permanent dipole-dipole interactions arise • How intermolecular forces affect properties • Hydrogen bonding • What’s special about hydrogen bonds • Effects of hydrogen bonds on properties • Special properties of water • Summary of intermolecular forces • Predicting the type of intermolecular forces Structure and bonding • Factors influencing physical properties • The way the atoms/ions are grouped together (structure) • The type of particles the solid is built up from • The bonds or forces holding these particles together • Structure and physical properties of ionic compounds (see also topic 15) • Structures and physical properties of covalent substances including giant covalent and simple molecular • Diamond and graphite – structures and properties • Graphene • Metallic bonding, structure and physical properties • Summary of types of bonding • Jigsaw discussion to summarise 4 main types of structure and their properties Links Next lesson – free resource: Topic 21 – the Periodic Table past and present https://www.tes.com/teaching-resource/periodic-table-past-and-present-ocr-as-chemistry-12964450
Electrons, bonding and structure
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Electrons, bonding and structure

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This bundle is ideal for classroom or home learning and covers electron configuration, ionic bonding, covalent bonding, shapes of molecules, electronegativity and bond polarity, intermolecular forces, structure and bonding. It includes all of the OCR A level chemistry specification section 2.2, as well as part of 3.1.1. Each topic includes a fully interactive PowerPoint including starter, group activities, questions and plenary along with a worksheet. Answers to all exercises are provided. Some of the resources include a PowerPoint quiz. This bundle is part of a series covering the OCR AS Chemistry specification and relates to the following sections: Module 2 – Foundations in chemistry / Part 2 – Electrons, bonding and structure 2.2.1 Electron structure and 2.2.2 Bonding and structure Module 3 – The Periodic table and energy / Part 1 –The Periodic Table 3.1.1 (Periodicity) Content covered: Electron configuration - shells, sub-shells and orbitals • Energy levels • Main shells, sub-shells and orbitals • Rules for filling orbitals • Electron configurations of atoms and ions • Deducing electron configuration using the Periodic Table • Relationship of electron configuration to the Periodic Table Ionic bonding • Bonding and the Periodic Table • Predicting ionic formulae • Definition of ionic bonding • Dot-and-cross diagrams – some of them animated • Half equations • Giant ionic lattice • Physical properties of ionic compounds including: • melting point • electrical conductivity • solubility in polar and non-polar solvents Covalent bonding • Definition of a covalent bond • Single, double and triple covalent bonds • Lone pairs • How to construct dot-and-cross diagrams • Dative covalent or coordinate bonds • The Octet Rule and exceptions • Average bond enthalpies Shapes of molecules and ions • Electron pair repulsion theory (VSEPR) • Effect of lone pairs on shape • Model answer to exam question • How to draw simple shapes in 3D • Bond angles Electronegativity and bond polarity • Definition of electronegativity • Atomic core and calculation of core charge • Factors affecting electronegativity • Pauling scale of electronegativity • Electronegativity and bond polarity • Non-polar and polar covalent bonds • Electronegativity and bonding type (including intermediate bonding) • Polarity of molecules from the bond polarities and the molecular shape • Predicting whether a molecule will have an overall dipole from its symmetry Intermolecular forces • What are intermolecular forces? • Strengths of bonds and intermolecular forces • Types of intermolecular forces • Induced dipole-dipole interactions (London (dispersion) forces) • How London forces arise • Factors affecting strength of London forces • Permanent dipole-dipole interactions • How permanent dipole-dipole interactions arise • How intermolecular forces affect properties • Hydrogen bonding • What’s special about hydrogen bonds • Effects of hydrogen bonds on properties • Special properties of water • Summary of intermolecular forces • Predicting the type of intermolecular forces Structure and bonding • Factors influencing physical properties • The way the atoms/ions are grouped together (structure) • The type of particles the solid is built up from • The bonds or forces holding these particles together • Structure and physical properties of ionic compounds (see also topic 15) • Structures and physical properties of covalent substances including giant covalent and simple molecular • Diamond and graphite – structures and properties • Graphene • Metallic bonding, structure and physical properties • Summary of types of bonding • Jigsaw discussion to summarise 4 main types of structure and their properties Links Next lesson – free resource: Topic 21 – the Periodic Table past and present https://www.tes.com/teaching-resource/periodic-table-past-and-present-ocr-as-chemistry-12964450
Intermolecular forces OCR AS Chemistry
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Intermolecular forces OCR AS Chemistry

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This complete year 12 lesson on intermolecular forces includes induced dipole-dipole interactions (London dispersion forces), permanent dipole-dipole forces and hydrogen bonding. For each type of intermolecular force there is an explanation of how they arise, what factors affect them and how they affect physical properties. The resource features a 58 slide animated PowerPoint that illustrates the concepts in a lively and visual way and includes a starter, learning checks, animations, clearly explained examples and a plenary multiple choice quiz. A 13 page worksheet and answers to the exercises are provided. This resource is part of a series covering the OCR AS Chemistry specification and relates to the following sections: Module 2 – Foundations in chemistry Part 2 – Electrons, bonding and structure 2.2.2 Bonding and structure Content covered: • What are intermolecular forces? • Strengths of bonds and intermolecular forces • Types of intermolecular forces • Induced dipole-dipole interactions (London (dispersion) forces) • How London forces arise • Factors affecting strength of London forces • Permanent dipole-dipole interactions • How permanent dipole-dipole interactions arise • How intermolecular forces affect properties • Hydrogen bonding • What’s special about hydrogen bonds • Effects of hydrogen bonds on properties • Special properties of water • Summary of intermolecular forces • Predicting the type of intermolecular forces Duration: 1 lesson Please review! Links Previous topic: Topic 18 – Electronegativity and bond polarity OCR AS Chemistry (free resource) https://www.tes.com/teaching-resource/electronegativity-and-bond-polarity-ocr-as-chemistry-12888524 Next topic: Topic 20 Structure and bonding https://www.tes.com/teaching-resource/structure-and-bonding-ocr-as-chemistry-12933603
Atoms and Reactions OCR AS Chemistry
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Atoms and Reactions OCR AS Chemistry

13 Resources
This bundle is ideal for classroom or home learning and covers the whole of the OCR A level chemistry specification sections 2.1 - Atoms and Reactions Each topic includes a fully interactive PowerPoint including starter, group activities, questions and plenary along with a worksheet and a lesson plan. Answers to all exercises are provided. Some of the resources include a PowerPoint quiz. A practical activity on titration is also included. This bundle relates to the following sections of the OCR AS Chemistry specification: Module 2 – Foundations in chemistry Part 1 – Atoms and reactions (whole) 2.1.1 – Atomic structure and isotopes 2.1.2 – Compounds, formulae and equations 2.1.3 – Amount of substance 2.1.4 – Acids 2.1.5 − Redox Content covered: The changing atom How Science Works - HSW7 - The changing accepted models of atomic structure over time. The contributions of five scientists to the development of the theory of atomic structure. Atomic structure • Protons, neutrons and electrons – mass and relative charge • Atomic number and mass number • Isotopes • Key definitions Atomic masses • Relative masses - comparison of masses to carbon-12 • Calculating relative atomic mass from the masses and abundances of the isotopes • Mass spectrometry and its use in the above • Calculating relative molecular and relative formula masses from formulae • Key definitions of relative atomic mass and relative isotopic mass Formulae and equations • Formulae of ions • Predicting ionic charges from the Periodic Table • Writing the formulae of ionic compounds and elements • Writing and balancing equations • Common types of reaction and their equations Amount of substance and the mole • Relative masses and the mole • Avogadro constant • Calculating number of atoms • Amount of substance • Molar mass • Calculating amount of substance from total mass and vice versa • Mole triangle Determining formulae • Definitions and use of the terms empirical and molecular formula • Simplest whole number ratios • Calculations of empirical and molecular formulae, from composition by mass or percentage compositions by mass and relative molecular mass • Calculating % by mass from the formula • The terms anhydrous, hydrated and water of crystallisation • Calculation of the formula of a hydrated salt from given percentage composition, mass composition or based on experimental results Moles and gas volumes • Molar volume of a gas • Moles and gas volume triangle • Summary of relationships for gases between amount of substance, volume, mass and number of molecules • Calculating amount of substance from volume of gas and vice versa • Ideal gases • The ideal gas equation Moles and concentrations of solutions • Definitions and use of the terms concentration and mass concentration • Concentrated and dilute • Relationship between concentration, amount in mol and volume including concentration triangle • Calculating concentration, amount in mol, volume and mass from given data • Example calculations • Mass concentrations • Choosing the correct glassware to measure volumes • Standard solutions • Practical activity – making up a standard solution • Diluting solutions and calculations • Practical activity – diluting solutions Moles and reactions • Balanced chemical equations and stoichiometry • Molar ratios • Using molar ratio to calculate amounts in moles of reactants and products in a chemical reaction • Using molar ratio to calculate masses of reactants and products in a chemical reaction • Using molar ratio to calculate volumes of gases in a chemical reaction • Flow diagrams showing steps in calculations involving quantities of reacting substances • Example calculations – clearly illustrated in a highly visual way Percentage yield and atom economy • Introduction to Green Chemistry • Reasons why reactions do not have 100% yield • % yield and how to calculate it • Calculations of % yield involving limiting reactant • Atom economy and its importance in the sustainability of a chemical process • Calculating atom economy • Example calculations – clearly illustrated in a highly visual way • Differences between atom economy and % yield • Comparing chemical processes in terms of sustainability (using production of ethanol as an example) Acids and bases • Definitions of acid, base, alkali and salt • Formulae of acids, bases, alkalis and salts • The relationship between bases and alkalis • The pH scale • Everyday examples of acids and bases • Weak and strong acids • Diprotic acids • Writing and balancing neutralization reactions (including acid-carbonate reactions) • Ionic equations Acid-base titrations • Titration and uses • Standard solution • Glassware and procedure for titration with detailed hints for technique • Reading burette • Recording titration results and calculating the mean • Titration calculations • Examples of structured and unstructured calculations • Revision of calculations involving masses and volumes • Practical titration activity • Evaluation of titration experiment • Uncertainties and calculating % uncertainties • Procedural errors Redox • Redox definition in terms of electron transfer • Oxidation numbers and how to calculate them • Oxidation number in chemical names • Redox definition in terms of oxidation number • Using oxidation numbers to identify redox reactions and determine what has been oxidised and reduced • Oxidising and reducing agents • Disproportionation as oxidation and reduction of the same element Links Next bundle: Electrons and bonding https://www.tes.com/teaching-resource/electrons-and-bonding-ocr-as-chemistry-12605443 Next topic Topic 14 – Electron configuration – shells, sub-shells and orbitals https://www.tes.com/teaching-resource/electron-configuration-shells-sub-shells-and-orbitals-ocr-as-chemistry-12207312
Acids, titrations and redox OCR AS Chemistry
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Acids, titrations and redox OCR AS Chemistry

3 Resources
This bundle is ideal for classroom or home learning and covers the whole of the OCR A level chemistry specification sections 2.1.4 – Acids and 2.1.5 − Redox Each topic includes a fully interactive PowerPoint including starter, group activities, questions and plenary along with a worksheet and a lesson plan. Answers to all exercises are provided. Some of the resources include a PowerPoint quiz. A practical activity on titration is also included. This bundle is the third in a series covering the OCR AS Chemistry specification and relates to the following sections: Module 2 – Foundations in chemistry Part 1 – Atoms and reactions 2.1.4 – Acids (whole) 2.1.5 Redox (whole) Content covered Acids and bases • Definitions of acid, base, alkali and salt • Formulae of acids, bases, alkalis and salts • The relationship between bases and alkalis • The pH scale • Everyday examples of acids and bases • Weak and strong acids • Diprotic acids • Writing and balancing neutralization reactions (including acid-carbonate reactions) • Ionic equations Acid-base titrations • Titration and uses • Standard solution • Glassware and procedure for titration with detailed hints for technique • Reading burette • Recording titration results and calculating the mean • Titration calculations • Examples of structured and unstructured calculations • Revision of calculations involving masses and volumes • Practical titration activity • Evaluation of titration experiment • Uncertainties and calculating % uncertainties • Procedural errors Redox • Redox definition in terms of electron transfer • Oxidation numbers and how to calculate them • Oxidation number in chemical names • Redox definition in terms of oxidation number • Using oxidation numbers to identify redox reactions and determine what has been oxidised and reduced • Oxidising and reducing agents • Disproportionation as oxidation and reduction of the same element Links Previous bundle: Moles, masses, concentrations, gas volumes and reactions https://www.tes.com/teaching-resource/moles-masses-concentrations-gas-volumes-and-reactions-12404451 Next bundle: Electrons and bonding https://www.tes.com/teaching-resource/electrons-and-bonding-ocr-as-chemistry-12605443 Next topic Topic 14 – Electron configuration – shells, sub-shells and orbitals https://www.tes.com/teaching-resource/electron-configuration-shells-sub-shells-and-orbitals-ocr-as-chemistry-12207312
Reactions of alkanes OCR AS Chemistry
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Reactions of alkanes OCR AS Chemistry

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This complete year 12 lesson on reactions of alkanes covers part of OCR sections 4.1.2 (Alkanes). Content covered includes reactivity of alkanes, combustion reactions and substitution by halogens including the radical substitution mechanism. The resource features a 38 slide animated PowerPoint along with a 13 page workbook. There is a starter activity and a plenary activity with timer. Exam tips and answers to the exercise are provided. Ideal for the classroom or blended learning, this resource could be used as an introduction to the topic, or for revision, extension or consolidation. This lesson is part of a series covering the OCR AS Chemistry specification and relates to the following part of the specification: Module 4 – Core organic chemistry Part 1 – Basic concepts and hydrocarbons 4.1.2 − Alkanes Content covered: Reactivity of alkanes Combustion of alkanes – complete and incomplete Balancing combustion equations Radicals and dot-and-cross diagrams Radical chain reactions Radical substitution of alkanes by halogens Mechanism including initiation, propagation and termination Limitations to the use of radical substitution in synthesis of halogenoalkanes Duration: 1 lesson Please review! Links Previous lesson: topic 45 – Introduction to alkanes (free resource) https://www.tes.com/teaching-resource/introduction-to-alkanes-ocr-as-chemistry-12654263 Next lesson: topic 47 – Alkenes (in preparation) Lesson on naming hydrocarbons: https://www.tes.com/teaching-resource/naming-hydrocarbons-with-quiz-as-12243823 Lesson on isomerism, including further information on shapes of alkanes and alkenes: https://www.tes.com/teaching-resource/isomerism-ocr-as-chemistry-12634065
Foundations in Chemistry
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Foundations in Chemistry

20 Resources
This bundle is ideal for classroom or home learning and covers the whole of the OCR A level chemistry specification module 2 - Foundations in Chemistry, sections 2.1 and 2.2. Each topic includes a fully interactive PowerPoint including starter, group activities, questions and plenary along with a worksheet and a lesson plan. Answers to all exercises are provided. Some of the resources include a PowerPoint quiz. A practical activity on titration is also included. This bundle relates to the following sections of the OCR AS Chemistry specification: Module 2 – Foundations in chemistry Part 1 – Atoms and reactions (whole) 2.1.1 – Atomic structure and isotopes 2.1.2 – Compounds, formulae and equations 2.1.3 – Amount of substance 2.1.4 – Acids 2.1.5 − Redox Part 2 – Electrons, bonding and structure (whole) 2.2.1 – Electron structure 2.2.2 – Bonding and structure Module 3 – The Periodic table and energy Part 1 –The Periodic Table (part) 3.1.1 (Periodicity) (part) Content covered: The changing atom How Science Works - HSW7 - The changing accepted models of atomic structure over time. The contributions of five scientists to the development of the theory of atomic structure. Atomic structure • Protons, neutrons and electrons – mass and relative charge • Atomic number and mass number • Isotopes • Key definitions Atomic masses • Relative masses - comparison of masses to carbon-12 • Calculating relative atomic mass from the masses and abundances of the isotopes • Mass spectrometry and its use in the above • Calculating relative molecular and relative formula masses from formulae • Key definitions of relative atomic mass and relative isotopic mass Formulae and equations • Formulae of ions • Predicting ionic charges from the Periodic Table • Writing the formulae of ionic compounds and elements • Writing and balancing equations • Common types of reaction and their equations Amount of substance and the mole • Relative masses and the mole • Avogadro constant • Calculating number of atoms • Amount of substance • Molar mass • Calculating amount of substance from total mass and vice versa • Mole triangle Determining formulae • Definitions and use of the terms empirical and molecular formula • Simplest whole number ratios • Calculations of empirical and molecular formulae, from composition by mass or percentage compositions by mass and relative molecular mass • Calculating % by mass from the formula • The terms anhydrous, hydrated and water of crystallisation • Calculation of the formula of a hydrated salt from given percentage composition, mass composition or based on experimental results Moles and gas volumes • Molar volume of a gas • Moles and gas volume triangle • Summary of relationships for gases between amount of substance, volume, mass and number of molecules • Calculating amount of substance from volume of gas and vice versa • Ideal gases • The ideal gas equation Moles, concentrations and solutions • Definitions and use of the terms concentration and mass concentration • Concentrated and dilute • Relationship between concentration, amount in mol and volume including concentration triangle • Calculating concentration, amount in mol, volume and mass from given data • Example calculations • Mass concentrations • Choosing the correct glassware to measure volumes • Standard solutions • Practical activity – making up a standard solution • Diluting solutions and calculations • Practical activity – diluting solutions Moles and reactions • Balanced chemical equations and stoichiometry • Molar ratios • Using molar ratio to calculate amounts in moles of reactants and products in a chemical reaction • Using molar ratio to calculate masses of reactants and products in a chemical reaction • Using molar ratio to calculate volumes of gases in a chemical reaction • Flow diagrams showing steps in calculations involving quantities of reacting substances • Example calculations – clearly illustrated in a highly visual way Percentage yield and atom economy • Introduction to Green Chemistry • Reasons why reactions do not have 100% yield • % yield and how to calculate it • Calculations of % yield involving limiting reactant • Atom economy and its importance in the sustainability of a chemical process • Calculating atom economy • Example calculations – clearly illustrated in a highly visual way • Differences between atom economy and % yield • Comparing chemical processes in terms of sustainability (using production of ethanol as an example) Acids and bases • Definitions of acid, base, alkali and salt • Formulae of acids, bases, alkalis and salts • The relationship between bases and alkalis • The pH scale • Everyday examples of acids and bases • Weak and strong acids • Diprotic acids • Writing and balancing neutralization reactions (including acid-carbonate reactions) • Ionic equations Acid-base titrations • Titration and uses • Standard solution • Glassware and procedure for titration with detailed hints for technique • Reading burette • Recording titration results and calculating the mean • Titration calculations • Examples of structured and unstructured calculations • Revision of calculations involving masses and volumes • Practical titration activity • Evaluation of titration experiment • Uncertainties and calculating % uncertainties • Procedural errors Redox • Redox definition in terms of electron transfer • Oxidation numbers and how to calculate them • Oxidation number in chemical names • Redox definition in terms of oxidation number • Using oxidation numbers to identify redox reactions and determine what has been oxidised and reduced • Oxidising and reducing agents • Disproportionation as oxidation and reduction of the same element Electron configuration - shells, sub-shells and orbitals • Energy levels • Main shells, sub-shells and orbitals • Rules for filling orbitals • Electron configurations of atoms and ions • Deducing electron configuration using the Periodic Table • Relationship of electron configuration to the Periodic Table Ionic bonding • Bonding and the Periodic Table • Predicting ionic formulae • Definition of ionic bonding • Dot-and-cross diagrams – some of them animated • Half equations • Giant ionic lattice • Physical properties of ionic compounds including: • melting point • electrical conductivity • solubility in polar and non-polar solvents Covalent bonding • Definition of a covalent bond • Single, double and triple covalent bonds • Lone pairs • How to construct dot-and-cross diagrams • Dative covalent or coordinate bonds • The Octet Rule and exceptions • Average bond enthalpies Shapes of molecules and ions • Electron pair repulsion theory (VSEPR) • Effect of lone pairs on shape • Model answer to exam question • How to draw simple shapes in 3D • Bond angles Electronegativity and bond polarity • Definition of electronegativity • Atomic core and calculation of core charge • Factors affecting electronegativity • Pauling scale of electronegativity • Electronegativity and bond polarity • Non-polar and polar covalent bonds • Electronegativity and bonding type (including intermediate bonding) • Polarity of molecules from the bond polarities and the molecular shape • Predicting whether a molecule will have an overall dipole from its symmetry Intermolecular forces • What are intermolecular forces? • Strengths of bonds and intermolecular forces • Types of intermolecular forces • Induced dipole-dipole interactions (London (dispersion) forces) • How London forces arise • Factors affecting strength of London forces • Permanent dipole-dipole interactions • How permanent dipole-dipole interactions arise • How intermolecular forces affect properties • Hydrogen bonding • What’s special about hydrogen bonds • Effects of hydrogen bonds on properties • Special properties of water • Summary of intermolecular forces • Predicting the type of intermolecular forces Structure and bonding • Factors influencing physical properties • The way the atoms/ions are grouped together (structure) • The type of particles the solid is built up from • The bonds or forces holding these particles together • Structure and physical properties of ionic compounds (see also topic 15) • Structures and physical properties of covalent substances including giant covalent and simple molecular • Diamond and graphite – structures and properties • Graphene • Metallic bonding, structure and physical properties • Summary of types of bonding • Jigsaw discussion to summarise 4 main types of structure and their properties Links Next lesson – free resource: Topic 21 – the Periodic Table past and present http://www.tes.com/teaching-resource/periodic-table-past-and-present-ocr-as-chemistry-12964450