Material properties (/m/099cf3)

The thermodynamic properties of materials are intensive thermodynamic parameters which are specific to a given material. Each is directly related to a second order differential of a thermodynamic potential. Examples for a simple 1-component system are: Compressibility Isothermal compressibility Adiabatic compressibility Specific heat Specific heat at constant pressure Specific heat at constant volume Coefficient of thermal expansion where P is pressure, V is volume, T is temperature, S is entropy, and N is the number of particles. For a single component system, only three second derivatives are needed in order to derive all others, and so only three material properties are needed to derive all others. For a single component system, the "standard" three parameters are the isothermal compressibility, the specific heat at constant pressure, and the coefficient of thermal expansion . For example, the following equations are true: The three "standard" properties are in fact the three possible second derivatives of the Gibbs free energy with respect to temperature and pressure.
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