Thermal physics Flashcards Preview

Physics ALevel OCR > Thermal physics > Flashcards

Flashcards in Thermal physics Deck (7)
Loading flashcards...
1
Q

what is the triple point

A

a specific temperature in which a substance can exist in all three states in thermodynamic equilibrium

2
Q

what is thermal equilibrium

A

a state in which there is no net flow of thermal energy between the objects involved so they are all at the same temperature

3
Q

what is the zeroth law of thermodynamics

A

if 2 objects are in thermal equilibrium with a 3rd, then all three are in thermal equilibrium

4
Q

what is the internal energy of an object

A

the sum of the randomly distributed kinetic and potential energies of the particles within a substance

5
Q

define absolute zero

A

where substances have minimum internal energy

6
Q

latent heat of fusion

A

change in enthalpy from providing energy (usually heat) to a substance to change its state from solid to a liquid at constant pressure

7
Q

latent heat of vaporization

A

energy absorbed in the process of a liquid becoming a vapour