GCSE Physics OCR A J249

P1.2: Changes of state

#P1.2a

describe how mass is conserved when substances melt, freeze, evaporate, condense or sublimate

#P1.2b

describe that physical changes differ from chemical changes because the material recovers its original properties if the change is reversed

#P1.2c

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

#P1.2d

define the term specific heat capacity and distinguish between it and the term specific latent heat

specific latent heat of fusion and specific latent heat of vaporisation

#P1.2e

apply the relationship between change in internal energy of a material and its mass, specific heat capacity and temperature change to calculate the energy change involved

#P1.2f

apply the relationship between specific latent heat and mass to calculate the energy change involved in a change of state

P1.1

The particle model

P1.3

Pressure

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