PPT-Thermochemistry

Heat Transfer and Specific Heat Energy Changes in Chemical Reactions Calculating H Heat Definition The energy transferred between samples of matter due to differences in their temperature. Feeling hot, hot, . hot. Thermochemistry. Thermochemistry. – concerned with the changes that occur during a. reaction.. Heat ( ) - that transfers from one object to another because of a. Chapter 17. Pages 511-524. Phase Diagrams. -a graph of pressure vs. temp that shows the conditions under which the phases of a substance exist. Triple point – . indicates the T and P conditions at which the solid, liquid, and vapor of the substance coexist at eq. The study of . energy. changes that occur during chemical reactions (chemical change) AND changes in state (physical change. ).. Did you know?. Chemical energy is stored in chemical bonds of a substance. This is called . Lecture 8 Topics. . Brown chapter 5. 8.1. :. . Kinetic . vs. potential energy. . 5.1. 8.2. :. . Transferring . energy as heat & work. Thermal energy. 8.3: . System . vs. surroundings. Bradley Welch and Richard Dawes. Introduction. What is the . Active Thermochemical Tables (. ATcT. ). Branko. . Ruscic,Argonne. National Laboratory . Methyl . Peroxides and Methyl . Hydroperoxide. DIMER RADICAL . ANION IN WATER. Irek . Janik. , G.N.R. . Tripathi. , Ian Carmichael . Radiation . Laboratory, University of . Notre Dame. , Notre Dame, . IN 46655, USA. Motivation for (SCN). 2. -. studies. INTRODUCTION. All reactions require energy to break bonds in the reactants, and all reactions give off energy when new bonds form to make products. The difference in energy required to break the bonds and to make the new bonds can tell you whether the reaction is endothermic or exothermic. . . -study of heat changes that occur during chemical reactions, study of relationships between chemistry and energy. energy. - ability to do work or supply heat. -unlike matter, energy is weightless, odorless, tasteless. Lecture Presentation. © 20. 12. Pearson Education, Inc.. © 2012 Pearson Education, Inc.. Energy. Energy. is the ability to do work or transfer heat.. Energy used to cause an object that has mass to move is called . AP Chemistry. thermodynamics. : the study of energy and. its transformations. -- . thermochemistry. : the subdiscipline involving. chemical reactions and. energy changes . temperature.. . . Study of energy changes that occur during chemical reactions and changes of state. Endothermic. Process that absorbs/gains heat. Heat flows into the system (+q). Heat removed from the surroundings (-q). Define. . temperature. and state the units in which it . is measured.. Define. . heat. and state its units.. Perform. specific-heat calculations.. Solve. . problems involving enthalpies of reaction, enthalpies of formation, and enthalpies of combustion.. Change. First Law of Thermodynamics. Heat . (q. ). ,. work (. w. ) and internal energy (. E. ). Calculation of heat gained or lost by system. Calorimeter for measuring heat exchange (between system and surrounding;. THERMOCHEMISTRY. The study of heat released or required by chemical reactions. Fuel is burnt to produce energy - combustion (e.g. when fossil fuels are burnt). CH. 4. (g) + 2O. 2. (g) CO.