What is the theory that states that things always go from a state of stability to a state of chaos?

second law of thermal-dynamics which by the way is contrary to evolution because evolution teaches that - left alone, things get better such as single celled organisms changing into complex humans. Secondly mutations are seldom almost never to the betterment, yet if evolution doesn't have a mind of its own (code for God) then trillions of mutations are responsible for life to occur from non life and mutate from single celled organisms to frogs to humans.

However I seldom argue evolution because it's premises viz. how was something created out of nothing must be answered in a manner that doesn't beg the question. This has yet to be answered especially since an infinite universe is impossible (see set theory and actual infinite sets).

Yes entropy is part of the law in that energy never is destroyed but transfers to a state that is not "useful" Such as the energy of a bullet hitting a brick wall; that energy doesn't go away but converts into something else viz moving atoms of brick.....

That's a layman's misinterpretation of entropy:

Entropy is a thermodynamic property that is a measure of the energy not available for useful work in a thermodynamic process, such as in energy conversion devices, engines, or machines. Such devices can only be driven by convertible energy, and have a theoretical maximum efficiency when converting energy to work. During this work entropy accumulates in the system, but has to be removed by dissipation in the form of waste heat.

Entropy is somewhat the idea expressed by that. It has nothing to do with evolution. That is one of Henry Morris' many lies to try feebly to discredit evolution.

Entropy. Did you have a philosophical question to go with that?