7 Matching Annotations
  1. Apr 2018
    1. The third law of thermodynamics states that the entropy of a pure crystal at the temperature of absolute zero is zero

      All pure crystals are perfectly ordered at absolute zero?

    2. d W (often labeled ΩΩ\Omega) is the number of possible arrangements of the system.

      So this is just the number of possible physical arrangements of the system?

  2. Sep 2017
    1. Pure water does not conduct electricity, and it has been observed that when a substance dissolves in water, it may produce mobile ions that allow the water to conduct electricity, and we call that compound an electrolyte, or it may not, in which case we call it a nonelectrolyte.  

      For these water compounds to conduct electricity does there have to be an existing electrical current touching the water or will the compound create electricity when you mix one of these salts or acids with water? I hope this makes sense.