Edexcel International GCSE Physics5c Change of state Checklist

Paper 2 only

• I can explain why heating a system changes the energy stored in the system and raises its temperature or produces changes of state.
• I can describe the changes that happen when a solid melts to form a liquid, and when a liquid evaporates or boils to form a gas.
• I can describe how the particles are arranged, and how they move, in solids, liquids and gases.
• Practical: I can obtain a temperature–time graph to show that the temperature stays constant during a change of state.
• I know that specific heat capacity is the energy needed to change the temperature of an object by one degree Celsius per kilogram of mass (J/kg °C).
• I can use the equation change in thermal energy = mass × specific heat capacity × change in temperature, ΔQ = m × c × ΔT
• Practical: I can investigate the specific heat capacity of materials, including water and some solids.