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What is a thermodynamic system? - THE CORRECT ANSWER-The
portion of the universe that we are interested in observing
What do surroundings include? - THE CORRECT ANSWER-Everything
that is not part of the system
What are 3 kinds of systems? - THE CORRECT ANSWER-1. isolated
2. closed
3. open
Describe isolated systems. - THE CORRECT ANSWER-They do not
exchange matter or energy with the surroundings
Describe closed systems. - THE CORRECT ANSWER-They exchange
energy but not matter with their surroundings
Describe open systems. - THE CORRECT ANSWER-They exchange both
energy and matter with their surroundings
,What are examples of process functions? - THE CORRECT ANSWER--
work
- heat
What is the first law of thermodynamics? - THE CORRECT ANSWER-A
statement of conservation of energy: the total energy in the
universe can never decrease or increase
Describe total internal energy in a closed system. - THE CORRECT
ANSWER-It's equal to the heat flow into the system minus the
work done by the system
What is an increase in total internal energy of a system caused
by? - THE CORRECT ANSWER-Transferring heat into the system or
performing work ON the system
When would the total internal energy of a system decrease? - THE
CORRECT ANSWER-When heat is lost from the system or work is
performed BY the system
What is heat? - THE CORRECT ANSWER-The process of energy transfer
between two objects at different temperatures that occurs until
the two objects come into thermal equilibrium (reach same
temp)
What is specific heat? - THE CORRECT ANSWER-The amount of energy
necessary to raise one gram of a substance by one degree
Celsius or one unit kelvin
, What is the specific heat of water? - THE CORRECT ANSWER-
What is one calorie (little c)? - THE CORRECT ANSWER-The amount of
heat required to raise 1 g of water one degree Celsius
What is one Calorie (big C)? - THE CORRECT ANSWER-The amount of
heat required to raise 1 kg of water 1 degree Celsius, equal to
1000 calories
Explain what heat of transformation is. - THE CORRECT ANSWER--
during a phase change, heat energy causes changes in the
particles' potential energy and energy distribution (entropy),
but not kinetic energy
- there is no change in temperature
What are the four special types of thermodynamic systems in
which a given variable is held constant? - THE CORRECT ANSWER-1.
isothermal processes
2. adiabatic processes
3. isobaric processes
4. isovolumetric (isochoric) processes
Describe isothermal processes. - THE CORRECT ANSWER--
temperature is constant
- change in internal energy is therefore 0