5cChange of state

5 Solids, liquids and gases

Paper 2 only

Explain why heating a system will change the energy stored within the system and raise its temperature or produce changes of state
Describe the changes that occur when a solid melts to form a liquid, and when a liquid evaporates or boils to form a gas
Describe the arrangement and motion of particles in solids, liquids and gases
Practical: obtain a temperature–time graph to show the constant temperature during a change of state
Know that specific heat capacity is the energy required to change the temperature of an object by one degree Celsius per kilogram of mass (J/kg °C)
Use the equation: change in thermal energy = mass × specific heat capacity × change in temperature; ΔQ = m × c × ΔT
Practical: investigate the specific heat capacity of materials including water and some solids

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5cChange of state

-- Paper 2 only --

Paper 2 only