Physics 3.2.3 Flashcards
1
Q
Define ‘Latent Heat’:
A
The Energy needed for a Substance to Change State.
2
Q
To Change State from Solid to Liquid, what must happen to the M/P?
A
They must gain enough Energy to overcome the Intermolecular Forces of Attraction holding them in their Rigid Solid Structure.
3
Q
Why does the Temperature of a Substance Remain Constant when it is Changing State?
A
Because the Energy is being used by the M/P to overcome the Intermolecular Forces of Attraction, instead of increasing the KE of the M/P, which would increase the Temp.
4
Q
What are the 2 types of Latent Heat, and which Change of State are they for? (2)
A
-Latent Heat of Fusion- Solid to Liquid, Melting, Liquification.
-Latent Heat of Vaporisation- Liquid to Gas, Boiling, Evaporation.
