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28 Cards in this Set
- Front
- Back
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Calorie
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the quantity of heat needed to raise the temperature of 1g of pure water
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Calorimeter
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the insulated device used to measure the absorption or release of heat in chemical or physical processes
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Calorimetry
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the accurate and precise measurement of heat change for chemical and physical processes
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chemical potential energy
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energy stored within the structural units of chemical substances
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endothermic process
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absorbs heat from the surroundings
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energy
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the capacity for doing work or supplying heat
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enthalpy
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the heat content of a system at constant pressure
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exothermic process
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releases heat to its surroundings
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heat
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the energy that transfers from one object to another because of a temperature difference between them
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heat capacity
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the amount of heat needed to increase the temperature of an object exactly 1 degree C
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heat of combustion
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the heat of reaction for the complete burning of 1 mole of a substance
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heat of reaction
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the heat change for the equation exactly as it is written
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Hess's Law of heat Summation
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if you add 2 or more thermochemical equations to give a final equation, then you also add the heats of reaction to give the final heat of reaction to give the final heat of reaction
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joule
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SI unit of heat and energy
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law of conservation of energy
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in any chemical or physcial process, energy is neither created nor destroyed
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molar heat of condensation
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the amount of heat released when 1 mole of vapor condenses
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molar heat of fusion
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the heat absorbed by one mole of a substance in melting from a sold to a liquid at constant temperature
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molar heat of solidification
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the heat lost when one mole of a liquid solidifies at a constant temperature
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molar heat of solution
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the heat change caused by dissolution of 1 mole of substance
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molar heat of vaporization
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the amount of heat neccessary to vaporize 1 mole of a given substance
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specific heat
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amount of heat it takes to raise the temperature of 1g of substance 1 degree C
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specific heat capacity
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amount of heat it takes to raise the temperature of 1g of substance 1 degree C
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standard heat of formation
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change in enthalpy that accompanies the formation of one mole of a compound from tis elements with all substances in their standard states at 25 degrees C
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surroundings
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everything else in the universe
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system
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part of the universe
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thermochemical equation
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includes heat change
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thermochemistry
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heat changes that occur during chemical reactions
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universe
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the system and its surroundings
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