First Law of Thermodynamics definitions Flashcards
(Specific) Heat capacity
The (specific) heat capacity of a body is the quantity of heat required (per unit mass) to cause a unit rise in temperature of the body
Specific latent heat of fusion
The specific latent heat of fusion is the quantity of heat required to convert unit mass of solid to liquid without any change of temperature
Specific latent heat of vaporisation
The specific latent heat of vaporisation is the quantity of heat required to convert unit mass of liquid to gas without any change in temperature
Internal energy
The internal energy of a system is the sum of microscopic kinetic energy, due to the random motion of the molecules, and the microscopic potential energy, associated with the intermolecular forces of the system
First law of thermodynamics
The first law of thermodynamics states that the increase in the internal energy of a system is equal to the sum of the heat supplied to the system and the work done on the system, and the internal energy of a system depends only on its state