There might be decreases in freedom in the rest of the universe, but the sum of the increase and decrease must result in a net increase. The freedom in that part of the universe may increase with no change in the freedom of the rest of the universe. Statistical Entropy - Mass, Energy, and Freedom The energy or the mass of a part of the universe may increase or decrease, but only if there is a corresponding decrease or increase somewhere else in the universe.Qualitatively, entropy is simply a measure how much the energy of atoms and molecules become more spread out in a process and can be defined in terms of statistical probabilities of a system or in terms of the other thermodynamic quantities. Statistical Entropy Entropy is a state function that is often erroneously referred to as the 'state of disorder' of a system.Phase Change, gas expansions, dilution, colligative properties and osmosis. Entropy also describes how much energy is not available to do work. Simple Entropy Changes - Examples Several Examples are given to demonstrate how the statistical definition of entropy and the 2nd law can be applied. Entropy is a measure of the disorder of a system. Entropy is dynamic - the energy of the system is constantly being redistributed among the possible distributions as a result of molecular collisions - and this is implicit in the dimensions of entropy being energy and reciprocal temperature, with units of J K-1, whereas the degree of disorder is a dimensionless number.A microstate is one of the huge number of different accessible arrangements of the molecules' motional energy* for a particular macrostate. Instead, they are two very different ways of looking at a system. Microstates Dictionaries define “macro” as large and “micro” as very small but a macrostate and a microstate in thermodynamics aren't just definitions of big and little sizes of chemical systems.

“Disorder” was the consequence, to Boltzmann, of an initial “order” not - as is obvious today - of what can only be called a “prior, lesser but still humanly-unimaginable, large number of accessible microstate it was his surprisingly simplistic conclusion: if the final state is random, the initial system must have been the opposite, i.e., ordered. Therefore, it connects the microscopic and the macroscopic world view. The (Shannon) entropy of a variable is defined as bits, where is the probability that is in the state, and is defined as 0 if. In mathematics, a more abstract definition is used. ‘Disorder’ in Thermodynamic Entropy Boltzmann’s sense of “increased randomness” as a criterion of the final equilibrium state for a system compared to initial conditions was not wrong. Entropy is a thermodynamic property just like pressure, volume, or temperature. Entropy In physics, the word entropy has important physical implications as the amount of 'disorder' of a system.

Definition of entropy