Physics 3.2.3 Flashcards

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1
Q

Define ‘Latent Heat’:

A

The Energy needed for a Substance to Change State.

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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.

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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.

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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.

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