average kinetic energy and Describe and explain how the use Institute of Physics’ so the faster the average motion of molecules in a gas Episode 601-1: of the molecules. changes as the gas is heated. Why are gas cylinders likely to explode in a fire? 6.3.3.1 How gases exert When the molecules collide 0.5 Describe why gases exert a Research how the gas forces on the walls with the wall of their force on a container. pressure in a submarine of their containers. container they exert a force it from crushing at depth. Explain what is meant by gas on the wall. The total force pressure in terms of the forces Use PhET interactive exerted by all of the exerted by the gas molecules on simulations to model gas molecules inside the a given area. pressure: container on a unit area of the walls is the gas pressure. Explain how blowing up a balloon too much can cause it to pop in terms of gas pressure. 6.3.3.1 How changing the Changing the temperature of 1 Describe and explain how what is happening inside BBC Bitesize – temperature of a a gas, held at constant changing the temperature of gas a container of fixed volume Temperature and gas affects the volume, changes the increases the gas pressure when the temperature is gas calculations pressure exerted. pressure exerted by the gas inside the container. changed. (known as the Pressure law). Explain why gas cylinders should Investigate the Pressure law: not be placed near heat sources. a round-bottomed clip Evaluate newspaper articles of flask connected to a local fires that have involved gas pressure gauge in a YouTube: canisters exploding and the container of water. reasons for the explosion in Heat the water taking the terms of gas pressure. temperature and pressure. Plot a of pressure Why do aerosol deodorants say: against temperature. keep away from fire?
average kinetic energy and so the faster the average of the molecules. Describe and explain how the motion of molecules in a gas changes as the gas is heated. Why are gas cylinders likely to explode in a fire? use Institute of Physics’ Episode 601-1: 6.3.3.1 How gases exert forces on the walls of their containers. When the molecules collide with the wall of their container they exert a force on the wall. The total force exerted by all of the molecules inside the container on a unit area of the walls is the gas pressure. 0.5 Describe why gases exert a force on a container. Explain what is meant by gas pressure in terms of the forces exerted by the gas molecules on a given area. Explain how blowing up a balloon too much can cause it to pop in terms of gas pressure. Research how the gas pressure in a submarine it from crushing at depth. Use PhET interactive simulations to model gas pressure: 6.3.3.1 How changing the temperature of a gas affects the pressure exerted. Changing the temperature of a gas, held at constant volume, changes the pressure exerted by the gas (known as the Pressure law). 1 Describe and explain how changing the temperature of gas increases the gas pressure inside the container. Explain why gas cylinders should not be placed near heat sources. Evaluate newspaper articles of local fires that have involved gas canisters exploding and the reasons for the explosion in terms of gas pressure. Why do aerosol deodorants say: keep away from fire? what is happening inside a container of fixed volume when the temperature is changed. Investigate the Pressure law: a round-bottomed flask connected to a pressure gauge in a container of water. Heat the water taking the temperature and pressure. Plot a of pressure against temperature. BBC Bitesize – Temperature and gas calculations clip YouTube:
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