Handout1_Chapter7 - 2. Work (w) is energy transferred by a...

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Chemistry 008 Handout #1 Dr. Neal Abrams brought to you by the Spring 2007 Learning Strategies Center NOTE: This review sheet is for Chem 008 attendees and is to be used in conjunction with lecture notes, handouts, problem sets, the textbook, the laboratory manual, and notes from Chem 008. Chapter 7 Review Guide Lectures 1/23 and 1/25 I. Definitions A. System: Item of interest B. Surroundings: Everything besides the system C. Universe: Sum of the system and the surroundings D. Heat capacity: The amount of heat needed increase the temperature of substance by a specific amount. E. Endothermic: Produces a temp. decrease in an isolated system. (q rxn < 0)) F. Exothermic: Produces a temp. increase in an isolated system. (q rxn > 0) II Energy Transfer A. 2 main types of transfer 1. Heat (q) is energy transferred thermally between a system and surroundings because of a temperature difference a. Thermal energy associated with random atomic and molecular motions
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Unformatted text preview: 2. Work (w) is energy transferred by a force a. w = Force x Distance B. E system = q system + w system 1. q system is heat transferred to the system 2. w system is work done on the system G. Types of energy 1. Kinetic: K.E.= 1/2 mv 2 2. Potential: P.E. = mgh C. First Law of Thermodynamics (Law of Conservation of Energy) 1. The total energy of the universe is constant 2. Energy can neither be created nor destroyed 3. E universe = in any process III. Three Types of Systems A. Open System: Transfers both heat and matter to surroundings B. Closed System: Transfers only heat to its surroundings C. Isolated System: No exchange with its surroundings IV. Calculations A. q sys = -q surr B. q sample = S sample x m sample x T 1. S sample is the specific heat capacity of the sample 2. m sample is the mass of the sample 3. T is the temperature change...
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This note was uploaded on 05/18/2008 for the course CHEM 2080 taught by Professor Davis,f during the Spring '07 term at Cornell University (Engineering School).

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