A complete set of companion audioguide chapters, designed to accompany our Edexcel IGCSE Chemistry Lessons. Perfect for revision and on-the-go learning! Each chapter is around 5 minutes long. 38 chapters included: 1 - States of Matter 2 - Solutions and Solubility 3 - Calculating Solubility 4 - Elements, Compounds and Mixture 5 - Methods of Separation 6 - Paper Chromatography 7 - Atoms and Molecules 8 - The Periodic Table 9 - Formulae and Calculations 10 - Formulae and Calculations Part 2 11 - Concentration and Volumes 12 - Ionic Bonding 13 - Covalent Bonding 14 - Metallic Bonding 15 - Electrolysis 16 - Group 1 Elements 17 - Group 7 Elements 18 - Atmospheric Gases 19 - Metals and the Reactivity Series 20 - The Uses of Metals 21 - Acids and Alkalis 22 - Titrations 23 - Acids, Bases and Salts 24 - Making Salts 25 - Chemical Tests 26 - Energetics 27 - Bond Energies 28 - Rates of Reaction 29 - Reversible Reactions 30 - Dynamic Equilibria 31 - Organic Compounds 32 - Crude Oil 33 - Burning Hydrocarbons 34 - Alkanes and Alkenes 35 - Organic Compounds Part 2 36 - Esters 37 - Addition Polymers 38 - Condensation Polymers

Powerpoint lecture covering the following in a modern, concise format: Specification Point 1.1 - Understand the three states of matter in terms of the arrangement, movement & energy of the particles. Specification Point 1.2 - Understand the interconversions between the three states of matter in terms of: The names of the interconversions. How they are achieved. The changes in arrangement, movement & energy of the particles. Complete set of Chapter 1 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 4.1 - Know that a hydrocarbon is a compound of hydrogen and carbon only. Specification Point 4.2 - Understand how to represent organic molecules using empirical formulae, molecular formulae, general formulae, structural formulae and displayed formulae. Specification Point 4.3 - Know what is meant by the terms homologous series, functional group and isomerism. Specification Point 4.4 - Understand how to name compounds relevant to this specification using the rules of IUPAC nomenclature. Specification Point 4.5 - Understand how to write the possible structural and displayed formulae of an organic molecule given its molecular formula. Specification Point 4.6 - Understand how to classify reactions of organic compounds as substitution, addition and combustion. Complete set of Chapter 7 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 2.33C - Describe how to carry out an acid-alkali titration. Complete set of Chapter 5 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 3.1.3.2 - Nature of covalent and dative covalent bonds. Complete set of Chapter 2 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 1.18 - Understand how elements are arranged in the periodic table. Specification Point 1.19 - Understand how to deduce the electronic configurations of the first 20 elements from their positions in the periodic table. Specification Point 1.20 - Understand how to use electrical conductivity and the acid-base character of oxides to classify elements as metals or non-metals. Specification Point 1.21 - Identify an element as a metal or a non-metal according to its position in the periodic table. Specification Point 1.22 - Understand how the electronic configuration of a main group element is related to its position in the periodic table. Specification Point 1.23 - Understand why elements in the same group of the periodic table have similar chemical properties. Specification Point 1.24 - Understand why the noble gases (Group 0) do not readily react. Complete set of Chapter 2 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 3.2.5.1 - General properties of transition metals. Specification Point 3.2.5.2 - Substitution reactions. Specification Point 3.2.5.3 - The shapes of complex ions. Complete set of Chapter 7 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 3.3.7 - Optical isomerism. Complete set of Chapter 8 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 3.3.10.1 - Bonding in aromatic chemistry. Specification Point 3.3.10.2 - Electrophilic substitution. Complete set of Chapter 8 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 3.2.5.5 - Variable oxidation states. Complete set of Chapter 7 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 1.5C - Know what is meant by the term solubility in the units grams per 100 grams of solvent. Specification Point 1.6C - Understand how to plot and interpret solubility curves. Specification Point 1.7C - Practical: investigate the solubility of a solid in water at a specific temperature. Complete set of Chapter 1 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 3.1.8.1 - Born-Haber cycles. Complete set of Chapter 6 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 3.1.10 - The equilibrium constant, Kp for homogeneous systems. Complete set of Chapter 6 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 3.3.4.1 - Structure, bonding and reactivity of alkenes. Specification Point 3.3.4.2 - Addition reactions of alkenes. Complete set of Chapter 5 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 3.1.5.1 - Collision theory. Specification Point 3.1.5.2 - Maxwell-Boltzmann distributions. Specification Point 3.1.5.3 - Effect of temperature on reaction rate. Specification Point 3.1.5.4 - Effect of concentration and pressure on reaction rate. Specification Point 3.1.5.5 - Catalysts. Practical 3: Investigation of how the rate of a reaction changes with temperature. Complete set of Chapter 3 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 2.5 - Know the colours, physical states (at room temperature) and trends in physical properties of chlorine, bromine and iodine. Specification Point 2.6 - Use knowledge of trends in group 7 to predict the properties of other halogens. Specification Point 2.7 - Understand how displacement reactions involving halogens and halides provide evidence for the trend in reactivity in group 7. Specification Point 2.8C - Explain the trend in reactivity in group 7 in terms of electronic configurations. Complete set of Chapter 4 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 4.44 - Know that an addition polymer is formed by joining up many small molecules called monomers. Specification Point 4.45 - Understand how to draw the repeat unit of an addition polymer, including polyethene, polypropene, polychloroethene and polytetrafluoroethene. Specification Point 4.46 - Understand how to deduce the structure of a monomer from the repeat unit of an addition polymer and vice versa. Specification Point 4.47 - Explain problems in the disposal of addition polymers. Complete set of Chapter 7 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 3.2.1.1 - Classification of elements. Specification Point 3.2.1.2 - Physical properties of Period 3 elements. Complete set of Chapter 4 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 3.3.1 - Introduction to organic chemistry. Specification Point 3.3.1.1 - Nomenclature. Complete set of Chapter 5 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 1.44 - Know that a covalent bond is formed between atoms by the sharing of a pair of electrons. Specification Point 1.45 - Understand covalent bonds in terms of electrostatic attractions. Specification Point 1.46 - Understand how to use dot-and-cross diagrams to represent covalent bonds in a variety of molecules. Specification Point 1.47 - Explain why substances with a simple molecular structures are gases or liquids, or solids with low melting and boiling points. Specification Point 1.48 - Explain why the melting and boiling points of substances with simple molecular structures increase, in general, with increasing relative molecular mass. Specification Point 1.49 - Explain why substances with giant covalent structures are solids with high melting and boiling points. Specification Point 1.50 - Explain how the structures of diamond, graphite and fullerene influence their physical properties, including electrical conductivity and hardness. Specification Point 1.51 - Know that covalent compounds do not usually conduct electricity. Complete set of Chapter 3 Lectures are available.