Thermal physics

Question 1

what is the triple point

Answer 1

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

Question 2

what is thermal equilibrium

Answer 2

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

Question 3

what is the zeroth law of thermodynamics

Answer 3

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

Question 4

what is the internal energy of an object

Answer 4

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

Question 5

define absolute zero

Answer 5

where substances have minimum internal energy

Question 6

latent heat of fusion

Answer 6

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

Question 7

latent heat of vaporization

Answer 7

energy absorbed in the process of a liquid becoming a vapour