25 – 30 apply the appropriate word to the definition indicated. not all words will be used. 25. heat content of a system at constant pressure calorie (cal) 26. ability to do work chemical potential energy 27. disorder energy 28. energy of motion enthalpy 29. study of energy changes that ocrrue during chemic reaction and changes in states. entropy 30. amount of heat required to raise t of 1 g of pure water 1◦c joule kinetic energy heat (q) specific heat thermochemistry