Companion PDF worksheet for Edexcel IGCSE Chemistry Lecture 19 - Metals and the Reactivity Series. Contains short answer questions, an activity requiring lateral thinking and exam-style questions. Specification Point 2.15 - Understand how metals can be arranged in a reactivity series based on their reactions with water or dilute acid. Specification Point 2.16 - Understand how metals can be arranged in a reactivity series based on displacement reactions. Specification Point 2.17 - Know the order of reactivity of these metals: potassium, sodium, lithium, calcium, magnesium, aluminium, zinc, iron, copper, silver, and gold. Specification Point 2.18 - Know the conditions under which iron rusts. Specification Point 2.19 - Understand how the rusting of iron may be prevented by barrier methods, galvanising and sacrificial protection. Specification Point 2.20 - Understand the terms oxidation, reduction, redox, oxidising agent and reducing agent in terms of the gain or loss of oxygen and the loss or gain of electrons. Specification Point 2.21 - Practical: investigate reactions between dilute hydrochloric and sulfuric acids and metals (e.g. magnesium, zinc and iron). Complete set of Chapter 4 Worksheets are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 2.15 - Understand how metals can be arranged in a reactivity series based on their reactions with water or dilute acid. Specification Point 2.16 - Understand how metals can be arranged in a reactivity series based on displacement reactions. Specification Point 2.17 - Know the order of reactivity of these metals: potassium, sodium, lithium, calcium, magnesium, aluminium, zinc, iron, copper, silver, and gold. Specification Point 2.18 - Know the conditions under which iron rusts. Specification Point 2.19 - Understand how the rusting of iron may be prevented by barrier methods, galvanising and sacrificial protection. Specification Point 2.20 - Understand the terms oxidation, reduction, redox, oxidising agent and reducing agent in terms of the gain or loss of oxygen and the loss or gain of electrons. Specification Point 2.21 - Practical: investigate reactions between dilute hydrochloric and sulfuric acids and metals (e.g. magnesium, zinc and iron). Complete set of Chapter 4 Lessons are available.

Complete set of concise, modern presentations for Edexcel IGCSE Geography (4GE1) Chapter 3 - Hazardous Environments. Contains colour coded specification points with custom vector graphics. Five presentations included: 21 - Natural Hazards 22 - Cyclones, Volcanoes and Earthquakes 23 - Living in Hazardous Areas 24 - Earthquake Management 25 - Earthquake Management Case Studies

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 1.2 - Describe the common features shown by eukaryotic organisms: plants, animals, fungi and protoctista. Specification Point 1.3 - Describe the common features shown by prokaryotic organisms such as bacteria. Specification Point 1.4 - Understand the term pathogen and know that pathogens may include the following: fungi, bacteria, protoctista and viruses. Complete set of Chapter 1 Lessons are available.

Complete set of concise, modern presentations for Edexcel IGCSE Biology (4BI0) Chapter 2 - Nutrition and Respiration. Contains colour coded specification points with handmade vector graphics. Eight presentations included: 10 - Nutrition in Plants 11 - The Leaf 12 - Investigating Photosynthesis 13 - Human Nutrition 14 - The Digestive System 15 - Digestion and Absorption 16 - Energy in Food 17 - Respiration

Complete set of concise, modern presentations for Edexcel IGCSE Biology (4BI0) Chapter 6 - Ecology and the Environment. Contains colour coded specification points with handmade vector graphics. Eight presentations included: 49 - Ecosystems 50 - Biodiversity 51 - Biotic and Abiotic Factors 52 - Feeding Relationships 53 - The Carbon Cycle 54 - The Nitrogen Cycle 55 - Pollution and Global Warming 56 - Deforestation

Powerpoint lecture covering the following in a modern, concise format: Specification Point 3.8.1 - Alteration of the sequence of bases in DNA can alter the structure of proteins. Specification Point 3.8.2.3 - Gene expression and cancer. Complete set of Chapter 8 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 2.9 - Know the approximate percentages by volume of the four most abundant gases in dry air. Specification Point 2.10 - Understand how to determine the percentage by volume of oxygen in air using experiments involving the reactions of metals and non-metals with air. Specification Point 2.11 - Describe the combustion of elements in oxygen, including magnesium, hydrogen and sulphur. Specification Point 2.12 - Describe the formation of carbon dioxide from the thermal decomposition of metal carbonates, including copper (II) carbonate. Specification Point 2.13 - Know that carbon dioxide is a greenhouse gas and that increasing amounts in the atmosphere may contribute to climate change. Specification Point 2.14 - Practical: determine the approximate percentage by volume of oxygen in air using a metal or a non-metal. Complete set of Chapter 4 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 3.7 - Use the relationship between frequency and wavelength in different contexts including sound waves and electromagnetic waves. Specification Point 3.8 - Explain why there is a change in the observed frequency and wavelength of a wave when its source is moving relative to an observer, and that this is known as the Doppler effect. Specification Point 3.10 - Know that light is part of a continuous electromagnetic spectrum that includes radio, microwave, infrared, visible, ultraviolet, x-ray and gamma ray radiations and that all these waves travel at the same speed in free space. Specification Point 3.11 - Know the order of the electromagnetic spectrum in terms of decreasing wavelength and increasing frequency, including the colours of the visible spectrum. Specification Point 3.12 - Explain some of the uses of electromagnetic radiations. Specification Point 3.13 - Explain the detrimental effects of excessive exposure of the human body to electromagnetic waves and describe simple protective measures against the risks. Complete set of Chapter 3 Lectures are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 4.19 - Know the general formula for alkanes. Specification Point 4.20 - Explain why alkanes are classified as saturated hydrocarbons. Specification Point 4.21 - Understand how to draw the structural and displayed formulae for alkanes with up to five carbon atoms in the molecule, and to name the unbranched-chain isomers. Specification Point 4.22 - Describe the reactions of alkanes with halogens in the presence of ultraviolet radiation, limited to mono-substitution. Specification Point 4.23 - Know that alkenes contain a particular functional group (C=C). Specification Point 4.24 - Know the general formula for alkenes. Specification Point 4.25 - Explain why alkenes are classified as unsaturated hydrocarbons. Specification Point 4.26 - Understand how to draw the structural and displayed formulae for alkenes with up to four carbon atoms in the molecule, and name the unbranched-chain isomers. Specification Point 4.27 -Describe the reactions of alkenes with bromine to produce dibromoalkanes. Specification Point 4.28 - Describe how bromine water can be used to distinguish between an alkane and an alkene. Complete set of Chapter 7 Lessons are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 1.25 - Know and use the relationship between momentum, mass and velocity. Specification Point 1.26 - Use the idea of momentum to explain safety features. Specification Point 1.27 - Use the conservation of momentum to calculate the mass, velocity or momentum of objects. Specification Point 1.28 - Use the relationship between force, change in momentum and time taken. Specification Point 1.29 - Demonstrate an understanding of Newton’s third law. Complete set of Chapter 1 Lessons are available.

The complete Edexcel IGCSE Double Award Science (Biology) course from start to finish. Huge bundle of resources with every topic covered. Complete set of concise, modern presentations for Edexcel IGCSE Double Award Science (Biology) (4SD0). Contains colour coded specification points with handmade vector graphics. 46 presentations included: 1 - Characteristics of Living Organisms 2 - Variety of Living Organisms 3 - Organisation and Cell Structure 5 - Biological Molecules 6 - Food Tests 7 - Enzymes 9 - Movement Across Membranes 10 - Nutrition in Plants 11 - The Leaf 12 - Investigating Photosynthesis 13 - Human Nutrition 14 - The Digestive System 15 - Digestion and Absorption 17 - Respiration 19 - Ventilation 20 - The Alveoli and Lung Disease 21 - Transport Mechanisms 23 - The Blood 25 - The Heart 26 - The Circulatory System 27 - Excretion 29 - Coordination 30 - Coordination in Plants 31 - Coordnation in Humans 32 - Reflexes and the Eye 33 - Controlling Body Temperature 34 - Hormones 36 - Reproduction 37 - Reproduction in Plants 38 - Human Reproductive Systems and the Menstrual Cycle 40 - Pregnancy and Puberty 41 - DNA, Genes and Chromosomes 43 - Inheritance and Codominance 44 - Genetic Diagrams 45 - Cell Division 46 - Variation in a Species 48 - Evolution 49 - Ecosystems 50 - Biodiversity 51 - Biotic and Abiotic Factors 52 - Feeding Relationships 53 - The Carbon Cycle 55 - Pollution and Global Warming 57 - Crop Production 58 - Microorganisms for Food 60 - Selective Breeding 61 - Genetic Modification The separate award Biology course is also available for purchase.

Companion PDF worksheet for Edexcel IGCSE Biology Lecture 44 - Genetic Diagrams. Contains short answer questions, an activity requiring lateral thinking and exam-style questions. Specification Point 3.22 - Understand that most phenotypic features are the result of polygenic inheritance rather than single genes. Specification Point 3.23 - Describe patterns of monohybrid inheritance using a genetic diagram. Specification Point 3.24 - Understand how to interpret family pedigrees. Specification Point 3.25 - Predict probabilities of outcomes from monohybrid crosses. Specification Point 3.26 - Understand how the sex of a person is controlled by one pair of chromosomes, XX in a female and XY in a male. Specification Point 3.27 - Describe the determination of the sex of offspring at fertilisation, using a genetic diagram. Complete set of Chapter 5 Worksheets are available.

Companion PDF worksheet for Edexcel IGCSE Biology Lecture 49 - Ecosystems. Contains short answer questions, an activity requiring lateral thinking and exam-style questions. Specification Point 4.1 - Understand the terms population, community, habitat and ecosystem. Specification Point 4.2 - Practical: investigate the population size of an organism in two different areas using quadrats. Complete set of Chapter 6 Worksheets are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 2.86 - Describe how nervous and hormonal communication control responses and understand the differences between the two systems. Specification Point 2.87 - Understand that the central nervous system consists of the brain and spinal cord and is linked to sense organs by nerves. Specification Point 2.88 - Understand that stimulation of receptors in the sense organs sends electrical impulses along nerves into and out of the central nervous system, resulting in rapid responses. Specification Point 2.89 - Understand the role of neurotransmitters at synapses. Complete set of Chapter 4 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 4.3B - Understand the term biodiversity. Specification Point 4.4B - Practical: investigate the distribution of organisms in their habitats and measure biodiversity using quadrats. Complete set of Chapter 6 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 4.3.2.1 - Producing monoclonal antibodies. Specification Point 4.3.2.2 - Uses of monoclonal antibodies. Complete set of Chapter 3 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 7.17 - Know that nuclear reactions, including fission, fusion and radioactive decay, can be a source of energy. Specification Point 7.18 - Understand how a nucleus of U-235 can be split by collision with a neutron, and that this process releases energy as kinetic energy of the fission products. Specification Point 7.19 -Know that the fission of U-235 produces two radioactive daughter nuclei and a small number of neutrons. Specification Point 7.20 - Describe how a chain reaction can be set up if the neutrons produced by one fission strike other U-235 nuclei. Specification Point 7.21 - Describe the role played by the control rods and moderator in the fission process. Specification Point 7.22 - Understand the role of shielding around a nuclear reactor. Specification Point 7.23 - Explain the difference between nuclear fusion and nuclear fission. Specification Point 7.24 - Describe nuclear fusion as the creation of larger nuclei resulting in a loss of mass from smaller nuclei, accompanied by a release of energy. Specification Point 7.25 - Know that fusion is the energy source for stars. Specification Point 7.26 - Explain why nuclear fusion does not happen at low temperatures and pressures, due to electrostatic repulsion of protons. Complete set of Chapter 7 Lectures are available.