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Unit 5 Preview

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