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Chapter 10 Section 10-4
N/A
9
Chemistry
10th Grade
01/10/2010

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Term
Thermodynamics
Definition
The study of energy
Term
Thermodynamics rule #1
Definition
The energy of the universe is
constant
Term
Internal Energy (E)
Definition
The sum of the kinetic and potential energies of all particles in the system.
Term
Internal Energy rule #1
Definition
Internal Energy can be changed by a flow of work, heat, or both.
Term
Delta E
Definition
Delta E = q + W
Delta E: Change in Internal Energy
q: Heat
W: Work
Term
Thermodynamic Quantities rule #1
Definition
Number- Gives the magnitude of the change
Term
Thermodynamic Quantities rule #2
Definition
Sign- Indicates the direction of the flow
(+) into the system
(-) out of the system
Term
Work rule #1
Definition
If the system does work on the surroundings than the value for
work is negative (Energy is leaving the system)
Term
Work rule #2
Definition
If work is done on the system by the surroundings than the value
for work is positive (Energy is entering the system)
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