I'm trying to understand entropy, because I have no clue what it is. Iv seen questions like this posted in other places on the web, but there seems to be a disagreement over the answer. Some people say it is the randomness and chaos of a system, and other people say it is how close it is to equilibrium. So in a closed system, all with the same mass, all under the same conditions, ie (the same pressure and temperature). Witch would have the most entropy, steam, ice, or water? What about in an open system, such as outside in a field? How about this: A metal cube at 300 kelvin is touching a cube at 400 kelvin. This is the closed system, no heat can leave these cubes, they only can transfer heat to each other. In a separate system There is a 300 and 500 kelvin block. Which out of these two systems has the highest entropy. As a separate question, within the systems, which block has the highest entropy? Thanks!