Hello all, Another very idiotic question (sorry for the idiotic questions today). From what I learned, a perfect gas obbey pV=nRT because the gas molecules collide against each other in an amazingly elastic way; that is, they may collide a trillion times but will still keep their total kinetic energy constant, and redistributes the energy in such way that allows the definition of temperature. Now, consider a very cold gas cloud with very low density; then the speed of the molecules and number of collisions is very small. Yet, even when the speed and number of collisions are small, it will still eventually obbey pV=nRT (once enough time has passed to let it settle down into steady state). Now, if I build a cloud of jell-o drops, then these collisions are not elastic, so nevermind that. But say I build a very low density cloud of very fine dust specks of the same size of a very rigid solid material, and the speed of the collisions is small enough as to not break the particles apart or melt them or do anything else crazy, then let enough time to pass for it to redistribute the kinetic energy and reach steady state. Won't that steady state also be ruled by pV=nRT, even if that is a cloud of solid specks instead of a cloud of gas?