It has come to my attention that the entropy tag is full of things which are not actually related to entropy. Here is my attempt to fix that.
Entropy is a measure of the number of specific ways in which a system may be arranged, often taken to be a measure of disorder, or a measure of progressing towards thermodynamic equilibrium. The entropy of an isolated system never decreases, because isolated systems spontaneously evolve towards thermodynamic equilibrium, which is the state of maximum entropy. (x)
What people don’t seem to understand is that entropy is always happening. It’s all around us all the time!
It’s not some sort of decay into madness, it’s not a loss of touch with reality, it’s not even a set of random events happening to you.
Actually, it has a lot to do with heat.
The third law of thermodynamics states:
Any pure crystalline substance at a temperature of absolute zero (0.0 K) has an entropy of zero (S = 0.0 J/K mol).
Because of this law, we are able to determine some general rules about entropy.
Entropy increases as one goes from a solid to a liquid, or a liquid to a gas.
Entropy increases if a solid or liquid is dissolved in a solvent.
Entropy increases as the number of particles (molecules) in a system increases.
The Entropy of any material increases with increasing temperature
Entropy increases as the mass of a molecule increases
- Entropy is higher for weakly bonded compounds than for compounds with very strong covalent bonds
Entropy increases as the complexity (# of atoms, # of heavier atoms, etc.) of a molecule increases
Basically, all of this means that the final state of a system is more energetically favorable if energy can be dispersed over a greater number and variety of molecules, and if the particles of the system can be more dispersed (more disordered).
The greater the dispersal of energy or matter in a system, the higher is its entropy. The greater the disorder (dispersal of energy and matter, both in space and in variety) the higher the entropy. Adding heat to a material increases the disorder. (x)
Habíendo terminado mi práctica, Feliz 14 de Febrero :D