Thermodynamics 346 Physics 49 Statistical thermodynamics 33 Thermodynamics; Heat; Physics 25 Statistical mechanics 23 Chemistry 22 Heat 17 Engineering 13 Statistical physics 12 Physical chemistry 11 thermodynamics 11 Chemical thermodynamics 9 Thermochemistry 8 Atmospheric thermodynamics 7 Chemical reactions 5 Chemistry, Physical and theoretical 5 Continuum mechanics 5 Matter 5 Nonequilibrium thermodynamics 5 STATISTICAL THERMODYNAMICS 5 Electrochemistry 4 Entropy 4 Fluid mechanics 4 Gases 4 Kinetic Theory 4 Kinetics 4 Mechanics 4 Physical biochemistry 4 Statistics 4 Thermodynamic 4