Internal energy, enthalpy, and entropy are classified as state functions in thermodynamics. While the changes in these quantities, represented as ΔU, ΔH, and ΔS, are often discussed, they are not state functions themselves because they depend on both the current and previous states. However, the values of these state functions do not rely on the path taken during a process. This distinction highlights the importance of understanding the nature of state functions in thermodynamic processes. Overall, the discussion emphasizes the characteristics and definitions of state functions in thermodynamics.
