PSYCH 1X03 Lecture Notes - Lecture 2: Rate-Determining Step, Rate Equation, Heat Capacity
24 Jan 2018
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Document Summary
Thermochemistry: study of the energy changes that accompany physical or chemical changes in matter. Potential energy: the energy of a body or system due to its position or composition. Kinetic energy: the energy of an object due to its motion. Temperature: a measure of the average kinetic energy of the entities in a substance. Heat: the transfer of thermal energy from a warm object to a cooler object. Specific heat capacity (c): the quantity of thermal energy required to raise the temperature of 1 g of a substance by 1 degree celsius: si units j/ g degree celsius. Chemical system: a group of reactants and products being studied that is undergoing a chemical or physical or nuclear change. Surroundings: all the matter that is not part of the system. Exothermic reaction: reaction where energy is released to the surroundings. Endothermic reaction: reaction where energy is absorbed from the surrounings.
