First Law of Thermodynamics Flashcards
What is the internal energy of a system?
The internal energy of a system is the sum of the random distribution of microscopic kinetic energy and microscopic potential energy of all the atoms or molecules.
Define Specific Heat Capacity.
The specific heat capacity of a substance is the thermal energy per unit mass to raise the temperture of the substance by one degree kevin.
Define Specific Latent Heat.
It is the heat required for an isothermal change in phase of a substance.
What is the specific latent heat of fusion/vaporisation?
It is defined as the amount of thermal energy required per unit mass to change a substance from the solid/liquid phase to the liquid/gaseous phase at constant temperature.
What is the First Law of Thermodynamics?
The first law of thermodynamics states that in a closed system, the increase in internal energy is equal to the heat supplied to the system and the work done on the system.
