Law of Conservation of Energy

• Law of Conservation of Energy - energy can neither be created or destroyed
• Heat of Reaction - total amount of heat released or absorbed from a chemical reaction
• Enthalpy - internal energy of a system is KE + PE
• Enthapy change - heat transfer process : H =Hproducts - Hreactants
• Positive - endo; heat >0
• Negative - exo; heat <0
• Enthalpy 1 - value depends on current state of system; depends on reactant & product