Unique package of interactive PowerPoint and paper based activities that can be used for independent work or in the classroom. This resource covers A level organic aliphatic and aromatic synthetic routes through two interactive PowerPoints, each based on a clear chart of numbered synthetic routes, where each number is linked to a page detailing that reaction. Information given includes type of reaction, reagents and conditions and an equation, as well as key definitions. In addition most reactions have an animated mechanism or structural equation. There are links to pages describing and explaining practical techniques, where relevant. Includes two blank charts (one for aliphatic and one for aromatic) of the synthetic routes for printing (preferably A3 size), together with a blank table for practising types of reaction and reagents and conditions. Full answers are provided. Please review! Content covered • A level synthetic routes – aliphatic and aromatic • Extending carbon chain length (carbon-carbon bond formation) • Animated mechanisms • Key definitions • Heating under reflux • Distillation • Reaction classification • Reagents and conditions • Structural equations • Activated benzene rings • Tests for functional groups Duration: 1-3 lessons and/or independent study Please see also AS organic synthesis https://www.tes.com/teaching-resource/as-organic-synthesis-12254256

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 https://www.tes.com/teaching-resource/atomic-masses-formulae-and-equations-ocr-as-chemistry-12348685 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

This bundle is ideal for classroom or home learning and covers all of the OCR A level chemistry specification section 3.2.1 − enthalpy changes. The energetics topics covered are enthalpy changes, experimental determination of enthalpy changes, bond enthalpies and Hess’ Law. 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 section: Module 3 – Periodic table and energy / Part 2 – Physical chemistry / 3.2.1 Enthalpy changes Content covered: Enthalpy changes • What is enthalpy • Law of conservation of energy • Enthalpy change • Enthalpy profile diagrams • System and surroundings • Exothermic and endothermic reactions and examples • Activation energy • Standard enthalpy changes • Standard conditions • Definitions of enthalpy changes • Simple calculations involving enthalpy changes Experimental determination of enthalpy changes • 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 Bond enthalpies • Making covalent bonds (exothermic) and breaking covalent bonds (endothermic) • Overall enthalpy change linked to relative enthalpies of breaking and making bonds – enthalpy profile diagram • Average bond enthalpies and why they differ from actual bond enthalpies • Factors affecting average bond enthalpies • Calculations involving bond enthalpies • Limitations of bond enthalpy calculations • Plenary discussion about why there is a constant increase in the enthalpy change of combustion of alcohols for each CH2 group added Hess’ Law • 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 Links Next lesson: 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

This bundle is ideal for classroom or home learning and covers electron configuration, ionic bonding, covalent bonding and shapes of molecules. It includes all of the OCR A level chemistry specification section 2.2.1 and part of 2.1.2. Each topic includes a fully interactive PowerPoint including starter, group activities, questions and plenary along with a worksheet. Answers to all exercises are provided. Three 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 part of 2.2.2 – Bonding and structure 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 o melting point o electrical conductivity o 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 Links Next lesson – free resource: Topic 18 – Electronegativity and polarity (in preparation)