Specific latent heat (AQA A-Level Physics): Flashcards
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Specific latent heat of vaporisation () definition
Specific latent heat of vaporisation () definition
Energy to change 1 kg liquid to gas at constant temp
Specific latent heat of fusion () definition
Specific latent heat of fusion () definition
Energy to change 1 kg solid to liquid at constant temp
Energy transfer equation for phase changes
Energy transfer equation for phase changes
(energy = mass × specific latent heat)
Units of specific latent heat
Units of specific latent heat
J kg⁻¹ (joules per kilogram)
Reason always much larger than
Reason always much larger than
separates particles; only loosens them
Temperature behaviour during phase change
Temperature behaviour during phase change
Remains constant even though energy is supplied
Internal energy components during phase change
Internal energy components during phase change
Potential energy ↑; kinetic energy constant
Water's value
Water's value
2260 kJ kg⁻¹
Energy vs mass relationship in phase changes
Energy vs mass relationship in phase changes
Directly proportional (double mass = double energy)
Energy % for atmospheric pressure work (water→steam)
Energy % for atmospheric pressure work (water→steam)
About 7%