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Chem Test 1 Stack Word Scramble

 
 


 

 
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Term Definition
ThermochemistryStudy of the heat effects associated with chemical reactions
HeatForm of motion at the molecular level by which energy is transferred between materials
CalorimetryQuantitative study of heat: the measurement of how much heat is evolved or absorbed in chemical reactions
Heat CapacityAmount of heat needed to raise its temperature by one unit of temperature
Molar Heat CapacityHeat capacity per mole of a substance
Specific Heat CapacityHeat capacity per unit mass of material
EnthalpyAmount of heat absorbed
State PropertyDepends only on the state of the system and not on the path followed to reach that state
ExothermicReaction in which heat is evolved
EndothermicReaction in which heat is absorbed
Hess's LawWhen 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
Standard Molar Enthalpy of FormationEquals 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
Bond EnthalpiesUsed to estimate standard enthalpies of gas-phase reactions
WorkIncreases a body's energy
Pressure-Volume WorkExpansion of a system against, or its compression by, an external pressure
1st Law of ThermodynamicsChange in internal energy of a system is the sum of the work done on it and the heat transferred to it