IGCSE Physics Specification

Edexcel 4PH1

Section 5: (c) Change of state

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#5.8P

explain why heating a system will change the energy stored within the system and raise its temperature or produce changes of state

#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

#5.10P

describe the arrangement and motion of particles in solids, liquids and gases

#5.11P

practical: obtain a temperature–time graph to show the constant temperature during a change of state

#5.12P

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)

#5.13P

use the equation:

change in thermal energy = mass × specific heat capacity × change in temperature


\(ΔQ = m × c × ΔT\)

#5.14P

practical: investigate the specific heat capacity of materials including water and some solids