Describe what is happening at an to the increase in atomic level when a substance is temperature and subsequent change in thermal energy, heated. increase in thermal energy in joules, J ΔE, Developing explanations using stored. mass, m, in kilograms, kg ideas and models: In measuring specific heat specific heat capacity, c, in capacity students will have Give students an opportunity to joules per kilogram per to measure energy or work create own models to explain degree Celsius, J/kg°C what is happening when a solid is done, this could be decrease heated. This can be in the form of a temperature change, in in the g.p.e. store, electrical Δθ, diagram, a 2D or 3D model as they degrees Celsius, °C work (VIt) and the change in see fit. thermal energy. This may be The specific heat capacity Calculate: better completed after of a substance is the amount of energy required section 4.2.4 when all of the Carry out calculations involving to raise the temperature of preliminary work has been specific heat capacity. Students one kilogram of the completed. should also be able to rearrange substance by one degree Working critically with the equation to find any unknown in Celsius. primary and secondary the equation. evidence: Presenting and writing arguments: How much energy is stored in a crisp? Do some Evaluate the use of concrete in research to find out the storage heaters: published figures and then Why is concrete used? investigate. What are the problems Working scientifically: associated with the use of Research different concrete? methods for measuring Why aren’t other materials with specific heat capacity. a higher or lower specific heat Design safe practical capacity used? procedures that allow data to be collected.
change in thermal energy, ΔE, in joules, J mass, m, in kilograms, kg specific heat capacity, c, in joules per kilogram per degree Celsius, J/kg°C temperature change, Δθ, in degrees Celsius, °C The specific heat capacity of a substance is the amount of energy required to raise the temperature of one kilogram of the substance by one degree Celsius. Describe what is happening at an atomic level when a substance is heated. Developing explanations using ideas and models: Give students an opportunity to create own models to explain what is happening when a solid is heated. This can be in the form of a diagram, a 2D or 3D model as they see fit. Calculate: Carry out calculations involving specific heat capacity. Students should also be able to rearrange the equation to find any unknown in the equation. Presenting and writing arguments: Evaluate the use of concrete in storage heaters: Why is concrete used? What are the problems associated with the use of concrete? Why aren’t other materials with a higher or lower specific heat capacity used? to the increase in temperature and subsequent increase in thermal energy stored. In measuring specific heat capacity students will have to measure energy or work done, this could be decrease in the g.p.e. store, electrical work (VIt) and the change in thermal energy. This may be better completed after section 4.2.4 when all of the preliminary work has been completed. Working critically with primary and secondary evidence: How much energy is stored in a crisp? Do some research to find out the published figures and then investigate. Working scientifically: Research different methods for measuring specific heat capacity. Design safe practical procedures that allow data to be collected.
AQA-8463-SOW-ENERGY.DOCX