EdexcelCompanion PDF worksheet for Edexcel IGCSE Chemistry Lecture 4 - Elements, Compounds and Mixtures. Contains short answer questions, an activity requiring lateral thinking and exam-style questions. Specification Point 1.8 - Understand how to classify a substance as an element, compound or mixture. Specification Point 1.9 - Understand that a pure substance has a fixed melting and boiling point, but that a mixture may melt or boil over a range of temperatures. Complete set of Chapter 1 Worksheets are available.

Companion PDF worksheet for Edexcel IGCSE Chemistry Lecture 5 - Methods of Separation. Contains short answer questions, an activity requiring lateral thinking and exam-style questions. Specification Point 1.10 Describe the following experimental techniques for the separation of mixtures: Simple distillation. Fractional distillation. Filtration. Crystallisation. Paper chromatography. Complete set of Chapter 1 Worksheets are available.

Companion PDF worksheet for Edexcel IGCSE Chemistry Lecture 3 - Calculating Solubility. Contains short answer questions, an activity requiring lateral thinking and exam-style questions. 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 Worksheets are available.

Companion PDF worksheet for Edexcel IGCSE Chemistry Lecture 20 - The Uses of Metals. Contains short answer questions, an activity requiring lateral thinking and exam-style questions. Specification Point 2.22C - Know that most metals are extracted from ores found in the Earth’s crust and that unreactive metals are often found as the uncombined element. Specification Point 2.23C - Explain how the method of extraction of a metal is related to its position in the reactivity series, illustrated by carbon extraction for iron and electrolysis for aluminium. Specification Point 2.24C - Be able to comment on a metal extraction process, given appropriate information. Specification Point 2.25C - Explain the uses of aluminium, copper, iron and steel in terms of their properties. Specification Point 2.26C - Know that an alloy is a mixture of a metal and one or more elements, usually other metals or carbon. Specification Point 2.27C - Explain why alloys are harder than pure metals. Complete set of Chapter 4 Worksheets are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 2.22C - Know that most metals are extracted from ores found in the Earth’s crust and that unreactive metals are often found as the uncombined element. Specification Point 2.23C - Explain how the method of extraction of a metal is related to its position in the reactivity series, illustrated by carbon extraction for iron and electrolysis for aluminium. Specification Point 2.24C - Be able to comment on a metal extraction process, given appropriate information. Specification Point 2.25C - Explain the uses of aluminium, copper, iron and steel in terms of their properties. Specification Point 2.26C - Know that an alloy is a mixture of a metal and one or more elements, usually other metals or carbon. Specification Point 2.27C - Explain why alloys are harder than pure metals. Complete set of Chapter 4 Lessons are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 2.34 - Know the general rules for predicting the solubility of ionic compounds in water. Specification Point 2.35 - Understand acids and bases in terms of proton transfer. Specification Point 2.36 - Understand that an acid is a proton donor and a base is a proton acceptor. Specification Point 2.37 - Describe the reactions of hydrochloric acid, sulfuric acid and nitric acid with metals, bases and metal carbonates to form salts. Specification Point 2.38 - Know that metal oxides, metal hydroxides and ammonia can act as bases, and that alkalis are bases that are soluble in water. Specification Point 2.39 - Describe an experiment to prepare a pure, dry sample of a soluble salt, starting from an insoluble reactant. Specification Point 2.42 - Practical: prepare a sample of pure, dry hydrated copper (II) sulphate crystals starting from copper (II) oxide. Complete set of Chapter 5 Lessons are available.

Companion PDF worksheet for Edexcel IGCSE Chemistry Lecture 7 - Atoms and Molecules. Contains short answer questions, an activity requiring lateral thinking and exam-style questions. Specification Point 1.14 - Know what is meant by the terms atom and molecule. Specification Point 1.15 - Know the structure of an atom in terms of the positions, relative masses and relative charges of subatomic particles. Specification Point 1.16 - Know what is meant by the terms atomic number, mass number, isotopes and relative atomic mass (Ar). Complete set of Chapter 2 Worksheets are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 1.14 - Know what is meant by the terms atom and molecule. Specification Point 1.15 - Know the structure of an atom in terms of the positions, relative masses and relative charges of subatomic particles. Specification Point 1.16 - Know what is meant by the terms atomic number, mass number, isotopes and relative atomic mass (Ar). Complete set of Chapter 2 Lessons are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 1.11 - Understand how a chromatogram provides information about the composition of a mixture. Specification Point 1.12 - Understand how to use the calculation of Rf values to identify the components of a mixture. Specification Point 1.13 - Practical: understand how a chromatogram provides information about the composition of a mixture. Complete set of Chapter 1 Lessons are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 2.44 - Describe tests for these gases: hydrogen, oxygen, carbon dioxide, ammonia and chlorine. Specification Point 2.45 - Describe how to carry out a flame test. Specification Point 2.46 - Know the colours formed in flame tests for the following cations: lithium, sodium, potassium, calcium and copper. Specification Point 2.47 - Describe tests for these cations: ammonium using sodium hydroxide solution and identifying the gas evolved. Copper, iron (II) and iron (III) using sodium hydroxide solution. Specification Point 2.48 - Describe tests for these anions: chloride, bromide and iodide using acidified silver nitrate solution. Sulphates using acidified barium chloride solution and carbonates using hydrochloric acid and identifying the gas evolved. Specification Point 2.49 - Describe a test for the presence of water using anhydrous copper (II) sulphate. Specification Point 2.50 - Describe a physical test to show whether a sample of water is pure. Complete set of Chapter 5 Lessons are available.

Powerpoint lecture and associated PDF worksheet 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 Lessons are available.

Companion PDF worksheet for Edexcel IGCSE Chemistry Lecture 31 - Organic Compounds. Contains short answer questions, an activity requiring lateral thinking and exam-style questions. 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 Worksheets are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 4.11 - Know that a fuel is a substance that, when burned, releases heat energy. Specification Point 4.12 - Know the possible products of complete and incomplete combustion of hydrocarbons with oxygen in the air. Specification Point 4.13 - Understand why carbon monoxide is poisonous, in terms of its effect on the capacity of blood to transport oxygen. Specification Point 4.14 - Know that, in car engines, the temperature reached is high enough to allow nitrogen and oxygen from air to react, forming oxides of nitrogen. Specification Point 4.14 - Know that, in car engines, the temperature reached is high enough to allow nitrogen and oxygen from air to react, forming oxides of nitrogen. Specification Point 4.15 - Explain how the combustion of some impurities in hydrocarbon fuels results in the formation of sulphur dioxide. Specification Point 4.16 - Understand how sulphur dioxide and oxides of nitrogen contribute to acid rain. Specification Point 4.17 - Describe how long-chain alkanes are converted to alkenes and shorter-chain alkanes by catalytic cracking. Specification Point 4.18 - Explain why cracking is necessary, in terms of the balance between supply and demand for different fractions. Complete set of Chapter 7 Lessons are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 4.7 - Know that crude oil is a mixture of hydrocarbons. Specification Point 4.8 - Describe how the industrial process of fractional distillation separates crude oil into fractions. Specification Point 4.9 - Know the names and uses of the main fractions obtained from crude oil. Specification Point 4.10 - Know the trend in colour, boiling point and viscosity of the main fractions. Complete set of Chapter 7 Lessons are available.

Companion PDF worksheet for Edexcel IGCSE Chemistry Lecture 32 - Crude Oil. Contains short answer questions, an activity requiring lateral thinking and exam-style questions. Specification Point 4.7 - Know that crude oil is a mixture of hydrocarbons. Specification Point 4.8 - Describe how the industrial process of fractional distillation separates crude oil into fractions. Specification Point 4.9 - Know the names and uses of the main fractions obtained from crude oil. Specification Point 4.10 - Know the trend in colour, boiling point and viscosity of the main fractions.

Companion PDF worksheet for Edexcel IGCSE Chemistry Lecture 33 - Burning Hydrocarbons. Contains short answer questions, an activity requiring lateral thinking and exam-style questions. Specification Point 4.11 - Know that a fuel is a substance that, when burned, releases heat energy. Specification Point 4.12 - Know the possible products of complete and incomplete combustion of hydrocarbons with oxygen in the air. Specification Point 4.13 - Understand why carbon monoxide is poisonous, in terms of its effect on the capacity of blood to transport oxygen. Specification Point 4.14 - Know that, in car engines, the temperature reached is high enough to allow nitrogen and oxygen from air to react, forming oxides of nitrogen. Specification Point 4.14 - Know that, in car engines, the temperature reached is high enough to allow nitrogen and oxygen from air to react, forming oxides of nitrogen. Specification Point 4.15 - Explain how the combustion of some impurities in hydrocarbon fuels results in the formation of sulphur dioxide. Specification Point 4.16 - Understand how sulphur dioxide and oxides of nitrogen contribute to acid rain. Specification Point 4.17 - Describe how long-chain alkanes are converted to alkenes and shorter-chain alkanes by catalytic cracking. Specification Point 4.18 - Explain why cracking is necessary, in terms of the balance between supply and demand for different fractions. Complete set of Chapter 7 Worksheets are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 2.40C - Describe an experiment to prepare a pure, dry sample of a soluble salt, starting from an acid and alkali. Specification Point 2.41C - Describe an experiment to prepare a pure, dry sample of an insoluble salt, starting from 2 soluble reactants. Specification Point 2.43C - Practical: prepare a sample of pure, dry lead (II) sulphate. Complete set of Chapter 5 Lectures are available.

Companion PDF worksheet for Edexcel IGCSE Chemistry Lecture 24 - Making Salts. Contains short answer questions, an activity requiring lateral thinking and exam-style questions. Specification Point 2.40C - Describe an experiment to prepare a pure, dry sample of a soluble salt, starting from an acid and alkali. Specification Point 2.41C - Describe an experiment to prepare a pure, dry sample of an insoluble salt, starting from 2 soluble reactants. Specification Point 2.43C - Practical: prepare a sample of pure, dry lead (II) sulphate. Complete set of Chapter 5 Worksheets are available.