Page Numbers: 260-262
LO: Explain the relationship between the enthalpy of a chemical or physical process and the sum of the enthalpies of the individual steps.
Essential Knowledge
ENE-6.6 A.2: When the products of a reaction are at a different temperature than their surroundings, they exchange energy with the surroundings to reach thermal equilibrium. Thermal energy is transferred to the surroundings as the reactants convert to products in an exothermic reaction. Thermal energy is transferred from the surroundings as the reactants convert to products in an endothermic reaction.
Page numbers 231-234; 655-656
EK
ENE-6.6A3: The chemical potential energy of the products of a reaction is different from that of the reactants because of the breaking and forming of bonds. The energy difference results in a change in the kinetic energy of the particles, which manifests as a temperature change.
Page numbers: 403-408