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Unit 5 Preview

all sections of the unit
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Across
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Compound composed only of hydrogen and carbon, the major component fossil fuels
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KE associated with the random motion of atoms and molecules
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Possible configuration or arrangement of matter and energy within a system
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Chemical reaction or physical change that absorbs heat
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Occurs naturally under certain conditions
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Unit of heat or other energy; the amount of energy required to raise 1 gram of water by 1 degree c
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All spontaneous processes involve an increase in the entropy of the universe
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During a physical or chemical change, energy can be neither created nor destroyed, although it can be changed in form.
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Occurs when a system pushes back the surroundings against a restraining pressure, or when surroundings compress the system.
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Defined in terms of a system’s enthalpy and entropy
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A device used to measure the amount of heat involved in a chemical or physical process
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The sum of a system’s internal energy and the mathematical product of its pressure and volume
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Sum of a systems internal energy and the mathmatical product of its pressure and volume
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Entropy of a perfect crystal at absolute zero is zero
Down
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Energy transfer due to changes in external variables such as pressure and volume.
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Transfer of thermal energy between 2 bodies at different temperatures
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Si unit of energy
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Property depending only on the state of a system, and not the path taken to reach that state
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State function that is a measure of the matter and/or energy dispersal within a system, determined by the # of system microstates; measure of the disorder of a system
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A technique we can use to measure the amount of heat involved in a chemical or physical process
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The energy an object has because of its relative position, composition, or condition
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The total of all possible kinds of energy present in a substance
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The energy that an object possesses because of its motion
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Internal energy of a system changes due to heat flow in or out of the system or work done on or by the system
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Proccess that takes place so slowly as to be capable of reversing direction in response to a small change in conditions
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If a process can be written as the sum of several stepwise processes, the enthalpy change of the total process equals the sum of the enthalpy changes of the various steps.
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Capacity to supply heat or do work