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Exothermic

Chapter 7

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Chemistry
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Calorimeter
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Chemistry 1210: Introduction to General Chemistry Dr. Gina M. Florio 18 October 2012 Brady, Jespersen, Hyslop Chapter 7 Energy & Chemical Change Thermochemistry: the study of energy flow during a chemical reaction Ch. 7.1 Energy: the ability to do work; often measured as heat Kinetic Energy: the energy of motion; KE = ?mv2 Potential Energy: stored or positional energy; chemical energy (no simple eqn.) Conservation of Energy: 1. Energy cannot be created or destroyed 2. Energy is only converted from one form to another (KE ? PE) 3. Total energy of the universe (or an isolated system) is constant Thermochemistry: Basic Definitions Units of Energy 1 Joule (J) ? the KE possessed by a 2 kg object moving at a velocity of 1 m/s 1 cal = 4.184 J (exactly) 1 kcal = 4.184 kJ

AP Chemistry Chapter 6 Outline

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Standard enthalpy of formation
Exothermic reaction
Calorimeter
Chemical energy
Exothermic
Environment

Daniel Seo 10/10/13 Period 5 Chapter 6 Thermochemistry Outline 6.1 The Nature of Energy 1. Energy ? capacity to do work (or to produce heat) i. Work ? force acting over a distance (moving an object) ii. Heat ? form of energy. ? chemicals may store potential energy in their bonds that can be released as heat energy 2. The law of conservation of mass ? energy can be converted from one form to another, but cannot be created or destroyed ? is also the first law of thermodynamics. i. Potential energy ? energy due to position or composition ii. Kinetic energy ? energy due to the motion of an object ? K? = 1/2mv2 3. Temperature reflects random motion of particles in a substance 4. Temperature indicates the direction in which heat energy will flow

Chapter 5 Thermochemistry

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Chapter 5: Thermochemistry ?Introduction- Energy is defined as the capacity or the ability the to do work i.e. in order to do work energy must be involved Mathematically Represented- Work or Energy = Force x Distance The view of energy can be thought of as physical in nature and contact via the exerted force Chemistry, however, must view energy differently. The study of energy and its transformation, as it applies to chemistry, is know as THERMOCHEMISTRY, along with spontaneity, the two are referred to as THERMODYNAMICS Section 5.1- Nature of Energy The study of chemistry and thermodynamics will involve the concepts of energy, work, and heat KINETIC and POTENTIAL Energy Kinetic ? energy due to an objects motion
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