Entropy is not a concrete physical thing so it does not really drive anything. Energy is the ability to apply a force over a distance (work). Energy drives things. The entropy change of a process tells us whether the process will occur naturally by itself (ie. change in entropy is > 0) or whether energy must be added to make the process occur (entropy < 0). If a change in entropy of a process is > 0, the process results in energy of a system becoming more disperse. If entropy change of a system < 0, energy in the system becomes more concentrated (this can only occur if energy is added).wangasu said:Does anybody know about the entropy-driven processes? Are they referred to the systems without enthapy change? so, all the isolated systems like the universe belong to the category. but, I also noticed that the term, entropy-driven, was used in some biological or mesoscopic systems. What is it really all about? Thank you.
Entropy-driven refers to a process or phenomenon where the increase in entropy is the driving force or cause of the observed behavior or change.
In chemical reactions, entropy plays a crucial role in determining the direction and spontaneity of the reaction. A reaction will tend to proceed in the direction that increases the overall entropy of the system.
Entropy is often associated with disorder because an increase in entropy usually leads to a more disordered or random state. However, it's important to note that entropy is a measure of energy dispersal and not necessarily a measure of disorder.
No, according to the second law of thermodynamics, the total entropy of a closed system will always either remain constant or increase. This means that entropy cannot be reversed.
Entropy is closely linked to the concept of the arrow of time, which refers to the one-way direction of time. The second law of thermodynamics states that entropy will always increase with time, which is why we perceive time as moving forward and not backward.