[{"n": "Enthalpy", "u": "/e/part-1/enthalpy/", "s": "Enthalpy is the sum of internal energy and pressure-volume work."}, {"n": "Entropy", "u": "/e/part-1/entropy/", "s": "A measure of disorder and irreversibility in physical systems."}, {"n": "Evaporation", "u": "/e/part-1/evaporation/", "s": "Surface vaporization of a liquid into gas phase."}, {"n": "Freezing", "u": "/e/part-1/freezing/", "s": "Liquid turns to solid upon cooling below freezing point."}, {"n": "Heat capacity", "u": "/e/part-1/heat-capacity/", "s": "Heat capacity measures heat needed to change an object's temperature."}, {"n": "Heat transfer", "u": "/e/part-1/heat-transfer/", "s": "Discipline of thermal engineering concerning exchange of thermal energy."}, {"n": "Ideal gas law", "u": "/e/part-1/ideal-gas-law/", "s": "Equation of state for a hypothetical ideal gas."}, {"n": "Internal energy", "u": "/e/part-1/internal-energy/", "s": "Internal energy is a state function central to the first law of thermodynamics."}, {"n": "Laws of thermodynamics", "u": "/e/part-1/laws-of-thermodynamics/", "s": "Fundamental laws governing energy, heat, and entropy."}, {"n": "Melting", "u": "/e/part-1/melting/", "s": "Phase transition from solid to liquid at melting point."}, {"n": "Phase (matter)", "u": "/e/part-1/phase-matter/", "s": "A phase is a uniform region of material with distinct physical properties."}, {"n": "Phase transition", "u": "/e/part-1/phase-transition/", "s": "Physical process of transition between states of matter."}, {"n": "Temperature", "u": "/e/part-1/temperature/", "s": "Temperature measures average particle kinetic energy and thermal energy distribution."}, {"n": "Thermodynamic cycle", "u": "/e/part-1/thermodynamic-cycle/", "s": "A cycle returns a system to its initial state."}, {"n": "Thermodynamic free energy", "u": "/e/part-1/thermodynamic-free-energy/", "s": "Free energy measures work available at constant temperature."}, {"n": "Liquid", "u": "/e/part-1/liquid/", "s": "A state of matter with definite volume but no fixed shape."}, {"n": "Solid", "u": "/e/part-1/solid/", "s": "A state of matter with tightly bound atoms and structural rigidity."}, {"n": "State of matter", "u": "/e/part-1/state-of-matter/", "s": "Distinct forms of matter defined by particle arrangement and behavior."}, {"n": "Plasma (physics)", "u": "/e/part-1/plasma-physics/", "s": "The fourth state of matter, comprising most of the universe."}, {"n": "Osmosis", "u": "/e/part-1/osmosis/", "s": "Spontaneous solvent movement across a semipermeable membrane."}, {"n": "Surface tension", "u": "/e/part-1/surface-tension/", "s": "Surface tension is the force per unit length at a liquid surface."}, {"n": "Statistical mechanics", "u": "/e/part-1/statistical-mechanics/", "s": "Statistical mechanics links microscopic particle behavior to macroscopic properties."}]