CHEM 1125Q Lecture Notes - Lecture 2: Ice Pack, Heat Transfer, Exothermic Process
Document Summary
Chem 1125 lecture 2 chapter 10 (energy and energy changes, intro to thermodynamics, Energy changes accompanying chemical and physical reactions play an important role in our everyday lives. Reactions involved in metabolizing food, generating electricity, powering cars and machines, etc. System and surroundings make up the universe. System : part of the universe that is of specific interest. Surroundings: everything other than the system; the rest of the universe. Either absorbed or released during a process. 1 calorie= amount of heat required to raise 1g of water by. Exothermic process : heat is transferred from system to surroundings (released by system) Endothermic process : heat is transferred from surroundings to system. Ex: a cold pack surface of the cold pack (in surroundings) feels (absorbed by system) cold. Thermodynamics: the study of the interconversion of heat and other types of energy. 3 types of systems in thermodynamics: system and surroundings.
