thermodynamics

• What Is a State Function, and How Can You Identify One?
  A state function depends only on a system’s equilibrium state, not its history. Learn how endpoint comparisons and exact differentials identify one.
• Why Are Intensive Properties Not Additive?
  Intensive properties do not add because they describe a system's state rather than its total amount; see how scaling and mixing determine combined values.
• Why Is Entropy an Extensive Quantity?
  Entropy is extensive because independent subsystems have multiplying numbers of microstates, and the logarithm turns that product into a sum.