1. Some thermodynamic variables are familiar : temperature, pressure, volume. 2. Thermodynamic variables do not give a " complete " picture of the system.3. Entropy is a thermodynamic variable which is less familiar and not as easily understood. 4. Thermodynamic variables , such as pressure, temperature, or entropy, likewise undergo thermal fluctuations.5. These rules can be used in the creation of an accurate phase diagram where both intensive thermodynamic variables . 6. Paul Ehrenfest classified phase transitions based on the behavior of the thermodynamic free energy as a function of other thermodynamic variables . 7. The cycle completes when the thermodynamic variables ( the thermodynamic state ) of the working body return to their initial values. 8. The thermodynamic variables of the grand canonical ensemble are chemical potential ( symbol : ) and absolute temperature ( symbol : ). 9. For thermodynamics, a "'thermodynamic state "'of a state variables, state parameters or thermodynamic variables . 10. If fluctuations bring the thermodynamic variables back to the starting condition, the structure is likely to go back to its initial configuration.