Cliffs AP Chemistry, 3rd Edition

Thermochemistry

Key Terms

Words that can be used as topics in essays:

adiabatic Hess’s law

calorimeter internal energy

endothermic kinetic energy

enthalpy law of conservation of energy

entropy potential energy

exothermic second law of thermodynamics

first law of thermodynamics specific heat

Gibbs free energy standard state

heat state property (function)

heat of dilution surroundings

heat of formation system (closed, isolated, open)

heat of fusion temperature

heat of hydration thermodynamics

heat of reaction third law of thermodynamics

heat of solution work

Key Concepts

Equations and relationships that you need to know:

• Endothermic reaction has +∆H; Hproducts> Hreactants
  Exothermic reaction has −∆H; Hproducts< Hreactants