This video covers the following specification points: 1.52C Know how to represent a metallic lattice by a 2-D diagram 1.53C Understand metallic bonding in terms of electrostatic attractions 1.54C Explain typical physical properties of metals, including electrical conductivity and malleability

This video covers the following specification points: 1.47 Explain why substances with a simple molecular structure are gases or liquids, or solids with low melting and boiling points 1.48 Explain why the melting and boiling points of substances with simple molecular structures increase, in general, with increasing relative molecular mass 1.49 Explain why substances with giant covalent structures are solids with high melting and boiling points 1.50 Explain how the structures of diamond, graphite and C60 fullerene influence their physical properties, including electrical conductivity and hardness 1.51. Know that covalent compounds do not usually conduct electricity

This video covers the following specification points: 1.44 Know what a covalent bond is formed between atoms by the sharing of a pair of electrons 1.45 Understand covalent bonds in terms of electrostatic attractions 1.46 Understand how to use dot-and-cross diagrams to represent covalent bonds in: Diatomic molecules, including hydrogen oxygen, nitrogen, halogens and hydrogen halides Inorganic molecules including water, ammonia and carbon dioxide Organic molecules containing up to two carbon atoms, including methane, ethane, ethene and those containing halogen atoms

This video covers the following specification points from the Edexcel IGCSE Chemistry 2017 specification: 1.40 Draw dot-and-cross diagrams to show the formation of ionic compounds by electron transfer, limited to combinations of elements from Groups 1,2,3 and 5,6,7 Only outer electrons need be shown 1.41 Understand ionic bonding in terms of electrostatic attractions 1.42 Understand why compounds with giant ionic lattices have high melting and boiling points 1.43 Know that ionic compounds do not conduct electricity when solid, but do conduct electricity when molten and in aqueous solution

This video covers the background knowledge necessary to understand ionic bonding. 1.37 Understand how ions are formed by electron loss or gain 1.38 Know the charges of these ions: Metals in Groups 1,2 and 3 Non-metals in Groups 5,6 and 7 Ag+, Cu2+, Fe2+, Pb2+, Zn2+ Hydrogen(H+), hydroxide (OH-), ammonium (NH4+), carbonate (CO32-), nitrate (NO3-), sulfate (SO42-) 1.39 Write formulae for compounds formed between the ions listed above

These videos cover specification points 1.30-1.33 of the Edexcel IGCSE Chemistry 2017 specification. 1.30 calculate percentage yield 1.31 understand how the formulae of simple compounds can be obtained experimentally, including metal oxides, water and salts containing water of crystallisation 1.32 know what is meant by the terms empirical formula and molecular formula 1.33 calculate empirical and molecular formulae from experimental data

These two videos cover specification points 1.27-1.29 of the Edexcel IGCSE Chemistry specification. 1.27 know that the mole (mol) is the unit for the amount of a substance 1.28 understand how to carry out calculations involving amount of substance, relative atomic mass (Ar) and relative formula mass (Mr) 1.29 calculate reacting masses using experimental data and chemical equations

This video covers specification point 1.26 of the Edexcel IGCSE Chemistry 2017 specification on relative formula/molecular mass. 1.26 calculate relative formula masses (including relative molecular masses) (Mr) from relative atomic masses (Ar)

This resource links to a video that covers specification point 1.25 from the Edexcel IGCSE Chemistry 2017 specification. 1.25 write word equations and balanced chemical equations (including state symbols): • for reactions studied in this specification • for unfamiliar reactions where suitable information is provided.

This resource links to a video that covers specification points 1.18 - 1.24 on the Edexcel IGCSE Chemistry 2017 specification. 1.18 Understand how elements are arranged in the Periodic Table: In order of atomic number In groups and periods 1.19 Understand how to deduce the electronic configurations of the first 20 elements from their positions in the Periodic Table 1.20 Understand how to use electrical conductivity and the acid-base character of oxides to classify elements as metals or non-metals 1.21 Identify an element as a metal or a non-metal according to its position on the periodic table 1.22 Understand how the electronic configuration of a main group element is related to its position in the Periodic Table 1.23 Understand why elements in the same group of the Periodic Table have similar chemical properties 1.24 Understand why the Noble gases (Group 0) do not readily react

This video covers the Edexcel IGCSE Chemistry 2017 specification points 1.14- 1.17. 1.14. Know what is meant by the terms atom and molecule 1.15. Know the structure of an atom in terms of the positions, relative masses and relative charges of sub-atomic particles 1.16. Know what is meant by the terms atomic number, mass number, isotopes and relative atomic mass (Ar) 1.17. Be able to calculate the relative atomic mass (Ar) of an element from isotopic abundances

This video covers specification points 1.8 and 1.9 of the Edexcel IGCSE 2017 specification. 1.8 details the difference between elements, compounds and mixtures. 1.9 focuses on why mixtures melt/boil over a range of temperatures while pure substances melt/boil at a fixed temperature.

This resource links to a video that covers points 1.3-1.7C of the Edexcel IGCSE specification. Each point is addressed, followed by a short discussion of how this content is commonly examined.

A video that covers the 1.1 and 1.2 specification points from the Edexcel IGCSE Chemistry 2017 specification.

Edexcel IGCSE 2017 Biology: Cells and Enzymes topic Lesson 1: Characteristics of Living things. Contains 15 question multiple choice quiz and covers MRSGRENC Use the attached “Random person selector” by editing the file to add your students names in. Then link the Random Person Selector button on the penultimate slide to that file. See instructions in the ppt. Comments and suggestions welcome. The rest of the topic will be uploaded soon.

A full lesson with step-by-step instructions on how to complete the much-feared titration calculations. Powerpoint with lots of practice, taking students from no knowledge at all to completing full titration calculation questions. I’ve had a lot of success with this. Give it a try and let me know if you have any success!