Powerpoint lecture covering the following in a modern, concise format: Specification Point 5.8P - Explain why heating a system will change the energy stored within the system and raise its temperature or produce changes of state. Specification Point 5.9P - Describe the changes that occur when a solid melts to form a liquid, and when a liquid evaporates or boils to form a gas. Specification Point 5.10P - Describe the arrangement and motion of particles in solids, liquids and gases. Specification Point 5.11P - Practical: obtain a temperature–time graph to show the constant temperature during a change of state. Specification Point 5.12P - Know that specific heat capacity is the energy required to change the temperature of an object by one degree celsius per kg of mass. Specification Point 5.13P - Use an equation to derive the change in thermal energy in a system. Specification Point 5.14P - Practical: investigate the specific heat capacity of materials including water and some solids. Complete set of Chapter 5 Lectures are available.

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 4.18P - Describe the energy transfers involved in generating electricity. Specification Point 4.19P - Describe the advantages and disadvantages of methods of large-scale electricity production from various renewable and non-renewable resources. Complete set of Chapter 4 Lessons are available.

Complete set of companion PDF worksheets for Edexcel IGCSE Physics (4PH1) Chapter 2 - Electricity. Contains short answer questions, an activity requiring lateral thinking and exam-style questions. Five worksheets included: 9 - Mains Electricity 10 - Power, Current and Voltage 11 - Circuits Part 1 12 - Circuits Part 2 13 - Static Electricity

Edexcel IGCSE Physics Worksheets Chapter 4 - Energy Resources and Transfer Complete set of companion PDF worksheets for Edexcel IGCSE Physics (4PH1) Chapter 4 - Energy Resources and Transfer. Contains short answer questions, an activity requiring lateral thinking and exam-style questions. Four worksheets included: 18 - Energy 19 - Thermal Energy 20 - Work and Power 21 - Sources of Energy

Companion PDF worksheet for Edexcel IGCSE Physics Lecture 24 - Ideal Gases. Contains short answer questions, an activity requiring lateral thinking and exam-style questions. Specification Point 5.15 - Explain how molecules in a gas have random motion and that they exert a force and hence a pressure on the walls of a container. Specification Point 5.16 - Understand why there is an absolute zero of temperature which is –273 °C. Specification Point 5.17 - Describe the Kelvin scale of temperature and be able to convert between the Kelvin and Celsius scales. Specification Point 5.18 - Understand why an increase in temperature results in an increase in the average speed of gas molecules. Specification Point 5.19 - Know that the Kelvin temperature of a gas is proportional to the average kinetic energy of its molecules. Specification Point 5.20 - Explain, for a fixed amount of gas, the qualitative relationship between: pressure and volume at constant temperature, pressure and Kelvin temperature at constant volume. Specification Point 5.21 - Use the relationship between the pressure and Kelvin temperature of a fixed mass of gas at constant volume. Specification Point 5.22 - Use the relationship between the pressure and volume of a fixed mass of gas at constant temperature. Complete set of Chapter 5 Worksheets are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 5.15 - Explain how molecules in a gas have random motion and that they exert a force and hence a pressure on the walls of a container. Specification Point 5.16 - Understand why there is an absolute zero of temperature which is –273 °C. Specification Point 5.17 - Describe the Kelvin scale of temperature and be able to convert between the Kelvin and Celsius scales. Specification Point 5.18 - Understand why an increase in temperature results in an increase in the average speed of gas molecules. Specification Point 5.19 - Know that the Kelvin temperature of a gas is proportional to the average kinetic energy of its molecules. Specification Point 5.20 - Explain, for a fixed amount of gas, the qualitative relationship between: pressure and volume at constant temperature, pressure and Kelvin temperature at constant volume. Specification Point 5.21 - Use the relationship between the pressure and Kelvin temperature of a fixed mass of gas at constant volume. Specification Point 5.22 - Use the relationship between the pressure and volume of a fixed mass of gas at constant temperature. Complete set of Chapter 5 Lectures are available.

Complete set of companion PDF worksheets for Edexcel IGCSE Physics (4PH1) Chapter 5 - Solids, Liquids and Gases. Contains short answer questions, an activity requiring lateral thinking and exam-style questions. Three worksheets included: 22 - Density and Pressure 23 - Changes of State 24 - Ideal Gases

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format: Specification Point 8.11P - Understand how the brightness of a star at a standard distance can be represented using absolute magnitude. Specification Point 8.12P - Draw the main components of the Hertzsprung–Russell diagram. Specification Point 8.13P - Describe the past evolution of the universe and the main arguments in favour of the Big Bang theory. Specification Point 8.14P - Describe evidence that supports the Big Bang theory. Specification Point 8.15P - Describe that if a wave source is moving relative to an observer, there will be a change in the observed frequency and wavelength. Specification Point 8.16P - Use the equation relating to change in wavelength, reference wavelength, velocity of a galaxy and the speed of light. Specification Point 8.17P - Describe the red-shift in light received from galaxies at different distances away from the Earth. Specification Point 8.18P - Explain why the red-shift of galaxies provides evidence for the expansion of the universe. Complete set of Chapter 8 Lessons are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 8.7 - Understand how stars can be classified according to their colour. Specification Point 8.8 - Know that a star’s colour is related to its surface temperature. Specification Point 8.9 - Describe the evolution of stars of similar mass to the Sun through the following stages: nebula, star, red giant and white dwarf. Specification Point 8.10 - Describe the evolution of stars with a mass larger than the Sun. Complete set of Chapter 8 Lectures are available.

Complete set of concise, modern presentations for Edexcel IGCSE Physics (4PH1) Chapter 4 - Energy Resources and Transfer. Contains colour coded specification points. Four presentations included: 18 - Energy 19 - Thermal Energy 20 - Work and Power 21 - Sources of Energy

Powerpoint lecture covering the following in a modern, concise format: Specification Point 7.10 - Explain the sources of background radiation from Earth and space. Specification Point 7.11 - Know that the activity of a radioactive source decreases over a period of time and is measured in becquerels. Specification Point 7.12 - Know the definition of the term half-life and understand that it is different for different radioactive isotopes. Specification Point 7.13 - Use the concept of the half-life to carry out simple calculations on activity, including graphical methods. Specification Point 7.14 - Describe uses of radioactivity in industry and medicine. Specification Point 7.15 - Describe the difference between contamination and irradiation. Specification Point 7.16 - Describe the dangers of ionising radiations and how to dispose of radioactive waste. Complete set of Chapter 7 Lectures are available.

Complete set of companion PDF worksheets for Edexcel IGCSE Physics (4PH1) Chapter 7 - Radioactivity. Contains short answer questions, an activity requiring lateral thinking and exam-style questions. Three worksheets included: 28 - Radioactivity Part 1 29 - Radioactivity Part 2 30 - Fission and Fusion

Powerpoint lecture covering the following in a modern, concise format: Specification Point 4.3.6 - Eating behaviour. Biological explanations for obesity, including genetic and neural explanations. Psychological explanations for obesity, including restraint theory, disinhibition and the boundary model. Explanations for the success and failure of dieting. Complete set of Chapter 13 Lectures are available.

Companion PDF worksheet for Edexcel IGCSE Physics Lecture 2 - Acceleration. Contains short answer questions, an activity requiring lateral thinking and exam-style questions. Specification Point 1.6 - Know and use the relationship between acceleration, change in velocity and time taken. Specification Point 1.7 - Plot and explain velocity-time graphs. Specification Point 1.8 - Determine acceleration from the gradient of a velocity−time graph. Specification Point 1.9 - Determine the distance travelled from the area between a velocity-time graph and the time axis. Specification Point 1.10 - Use the relationship between final speed, initial speed, acceleration and distance moved. Complete set of Chapter 1 Worksheets are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 4.3.10 - Addiction Describing addiction: physical and psychological dependence, tolerance and withdrawal syndrome. Explanations for nicotine addiction: brain neurochemistry, including the role of dopamine, and learning theory as applied to smoking behaviour, including reference to cue reactivity. Complete set of Chapter 17 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 4.3.10 - Addiction Explanations for gambling addiction: learning theory as applied to gambling, including reference to partial and variable reinforcement; cognitive theory as applied to gambling, including reference to cognitive bias. Complete set of Chapter 17 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 4.3.9 - Forensic psychology. Biological explanations of offending behaviour: an historical approach (atavistic form); genetics and neural explanations. Complete set of Chapter 16 Lectures are available.

Complete set of concise, modern presentations for AQA A Level Psychology (7181 and 7182) Chapter 11 - Cognition and Development. Contains colour coded specification points. Five presentations included: 58 - Piaget’s Theory of Cognitive Development 59 - Vygotsky’s Theory of Cognitive Development 60 - Early Infant Abilities 61 - Development of Social Cognition 62 - The Mirror Neuron System

Powerpoint lecture covering the following in a modern, concise format: Specification Point 4.3.7 - Stress. Managing and coping with stress: drug therapy (benzodiazepines, beta blockers), stress inoculation therapy and biofeedback. The role of social support in coping with stress; types of social support, including instrumental, emotional and esteem support. Complete set of Chapter 14 Lectures are available.

Powerpoint lecture covering the following in a modern, concise format: Specification Point 3.2.4 - Cell recognition and the immune system. Complete set of Chapter 2 Lectures are available.