Purdue Chm 115 Exam 2 100% Correct

Purdue Chm 115 Exam 2 100% Correct kinetic energy the energy of motion potential energy the stored energy internal energy of a system the sum of all potential and kinetic energy components reactants, products internal energy changes when _______ change to _________ exothermic energy released to the surroundings; bonds forming; E initial > E final endothermic energy absorbed from surroundings; bonds broken; E final > E initial work the energy transferred when an object is moved against a force heat the energy transferred from hotter object to colder one first law of thermodynamics total energy of a system plus surroundings remains constant ΔE=q+w enthalpy (H) E+PV Hess's Law the enthalpy change of an overall process is the sum of the enthalpy changes of its individual steos soluble when a solid dissolves in a solvent less gases tend to become ______ soluble as temperature increases more solids tend to become _______ soluble as temperature increases increases, increases ionization energy ________ as it goes down and _________ as it goes across increases, decreases atomic radius ________ as it goes down and _________ as it goes across electron affinity how likely an element is to gain an electron decreases, increases electronegativity _________ as it goes down and ____________ as it goes across