What is minimal quantity of matter required to reveal its physical state properties? I.e. number of particles/atoms when their collection can be considered as liquid, solid, gas or plasma.
I am aware about environment parameters: gravity, EM fields, atmospheric pressure, etc. No matter whether exists a generic form solution or sets of special cases (models). I'm interesting from where to start the quantity estimations.
I guess thermodynamics could answer this, but this part of physics is so huge and I beg for answers (or clues) from more experienced users which as expert could save tons of time by one line.
I know that some physical properties can be deduced from one particle of the system. I consider collection of particles as a black box which we could analyse as substance to reveal its properties (viscosity, density, etc). So how to obtain a sufficient (representative) number of particles for this case.