Specific Latent Heat Flashcards
1
Q
Specific latent heat of substance is…
A
The amount of energy needed to change 1 kg of it from one state to another without changing its temperature.
2
Q
Uses of energy in melting or boiling
A
You are still putting in energy so the internal energy store increases. However, the energy is used for breaking intermolecular bonds rather than raising the temperature.
3
Q
Flat spots on the heating graph
A
Shows where energy is being transferred by heating but not being used to change the temperature.
4
Q
SLH for cooling
A
Is the energy released by a change in state.
5
Q
SLH for melting or freezing
A
Called specific latent heat of fusion.
6
Q
SLH for evaporating or condensing
A
Called specific latent heat of vaporisation.
