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Thermodynamics

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Term
Definition
Thermochemistry   Study of the heat effects associated with chemical reactions  
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Heat   Form of motion at the molecular level by which energy is transferred between materials  
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Calorimetry   Quantitative study of heat: the measurement of how much heat is evolved or absorbed in chemical reactions  
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Heat Capacity   Amount of heat needed to raise its temperature by one unit of temperature  
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Molar Heat Capacity   Heat capacity per mole of a substance  
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Specific Heat Capacity   Heat capacity per unit mass of material  
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Enthalpy   Amount of heat absorbed  
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State Property   Depends only on the state of the system and not on the path followed to reach that state  
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Exothermic   Reaction in which heat is evolved  
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Endothermic   Reaction in which heat is absorbed  
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Hess's Law   When several chemical equations are added or subtracted to give an overall equation, additon or subtraction of the corresponding enthalpy changes gives the enthalpy change associated with the overall equation  
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Standard Molar Enthalpy of Formation   Equals the enthalpy change when 1 mol of a species is formed in a standard state at a specified temperature from the most stable forms of the elements that constitute it  
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Bond Enthalpies   Used to estimate standard enthalpies of gas-phase reactions  
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Work   Increases a body's energy  
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Pressure-Volume Work   Expansion of a system against, or its compression by, an external pressure  
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1st Law of Thermodynamics   Change in internal energy of a system is the sum of the work done on it and the heat transferred to it  
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Created by: iceman15177
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