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This bundle is ideal for classroom or home learning and covers the whole of the OCR A level chemistry specification section 2.1.3 - Amount of Substance (together with the free resource - topic 10 Percentage yield and atom economy) 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. This bundle is the second 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 2.1.3 – Amount of substance Content covered 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) Links Previous bundle: Atomic structure, masses, formulae and equations /teaching-resource/atomic-masses-formulae-and-equations-ocr-as-chemistry-12348685 Next bundle Acids, titrations and redox /teaching-resource/acids-titrations-and-redox-ocr-as-chemistry-12749654 Free resource - standard form, decimal places and significant figures /teaching-resource/standard-form-decimal-places-and-significant-figures-a-level-chemistry-12405507

This bundle is ideal for classroom or home learning and covers the whole of the OCR A level chemistry specification sections 2.1.1 and 2.1.2. 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. Three of the resources include a PowerPoint quiz. This bundle is the first 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 and 2.1.2 – Formulae and equations 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 Links Next lesson – free resource: Topic 5 – Amount of substance and the mole /teaching-resource/amount-and-moles-ocr-as-chemistry-12190652 Next bundle - Moles, masses, concentrations, gas volumes and reactions (covers whole of OCR section 2.1.3) /teaching-resource/moles-masses-concentrations-gas-volumes-and-reactions-12404451

Unique package of interactive PowerPoint and paper-based activities that can be used for independent self-study, revision or in the classroom. These resources cover AS and A2 infrared (IR) spectroscopy and mass spectrometry through two interactive PowerPoint presentations, which are colourful, animated and present the information in a flexible way. Each PowerPoint slide contains links to other slides, to enable easy navigation and to emphasise links between different aspects. A method for interpreting infrared and mass spectra is given, in each case illustrated by animated examples with spectra and structures to aid understanding of the process. Also included are two graded worksheet including problems where unknown structures are identified. Full answers to exercises are provided. This resource was developed primarily for the OCR A level Chemistry specification but is useful for all specifications. It relates to the following sections : AS: Module 4 – Core organic chemistry Part 2 – Alcohols, haloalkanes and analysis 4.2.4 Analytical techniques A2: Module 6 – Organic chemistry and analysis Part 3 – Analysis 6.3.2 Spectroscopy (Combined techniques) Please review! Link Identifying compounds from infrared and mass spectra (A level) /teaching-resource/identifying-compounds-from-infrared-and-mass-spectra-a-level-12325481

This bundle includes a complete lesson on naming hydrocarbons and a fun quiz on naming alkanes and cycloalkanes, based on the format used by A Question of Sport in their picture quiz. The complete lesson on naming alkanes and alkenes features a 38 slide interactive, animated PowerPoint as well as a starter activity and plenary (quiz activity) along with a 13 page workbook and a lesson plan. Exam tips and answers to all exercises are provided. The quiz can be used as a team or individual activity, using mini whiteboards to write the answers. A linked interactive PowerPoint, with answers and explanations, is provided along with full teaching notes. Please review! Content covered: • Application of IUPAC rules of nomenclature for systematically naming organic compounds • Naming alkanes and cycloalkanes • Naming branched alkanes • Naming alkenes and branched alkenes • Naming quiz Duration: 1 lesson + 20 minutes for quiz Links Previous lesson: topic 40 – Introduction to organic chemistry /teaching-resource/introduction-to-organic-chemistry-ocr-as-chemistry-12237143 Next lesson: topic 42 – Functional groups - names and formulae /teaching-resource/functional-groups-names-and-formulae-ocr-as-chemistry-12624555