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

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) https://www.tes.com/teaching-resource/identifying-compounds-from-infrared-and-mass-spectra-a-level-12325481

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)

This bundle is ideal for classroom or home learning and covers the history of the periodic table, the features of the modern periodic table and periodicity, the periodicity of ionisation energies and melting points and the properties of group 2 elements and compounds. 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 3 – The Periodic table and energy Part 1 –The Periodic Table 3.1.1 Periodicity and 3.1.2 Group 2 Content covered: Periodic table past and present • The history of the periodic table, including Newlands’ and Mendeleev’s contributions • The structure of the modern periodic table – periods, groups and blocks • Relationship between electron configuration and the periodic table • Periodicity – the variation in properties when plotted against atomic number • Periodicity and metallic character • Metal and non-metals **Periodicity of ionisation energies and melting points ** • First ionisation energy – definition • Factors affecting ionisation energies: nuclear charge, atomic radius and shielding • Explanation of shielding • Successive ionisation energies • Predicting group from successive ionisation energies • Periodicity of first ionisation energies • Trends across a period and down a group • Explanations of small decreases from group 2 to group 3 and from group 5 to group 6 • Periodicity of structure of elements: giant metallic, giant covalent and simple molecular structures • Periodicity of melting points and explanation in terms of structure. Group 2 • Structure and physical properties of group 2 elements • Electron configuration and formation of ions • First ionisation enthalpy and reactivity • Redox reactions of group 2 metals with oxygen, water and acids • Properties of group 2 compounds • Group 2 oxides and hydroxides – reactions with acids • Group 2 oxides – reaction with water • Solubility and alkalinity of group 2 hydroxides • Reactions of group 2 carbonates with acid • Uses of group 2 compounds Links Next lesson: Topic 24 – group 7 (in preparation)