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Exam (elaborations)

Chem 103 exam 2 study guide info

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Thermodynamics Correct Answer-the study of energy and its transformations Thermochemistry Correct Answer-the study of the relationships between chemical reactions involving heat. Kinetic energy Correct Answer-energy of motion: E=1/2mv^2 Potential energy Correct Answer-energy an object poss...

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  • August 6, 2024
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Chem 103 exam 2 study guide info
Thermodynamics Correct Answer-the study of energy and its
transformations


Thermochemistry Correct Answer-the study of the relationships between
chemical reactions involving heat.


Kinetic energy Correct Answer-energy of motion: E=1/2mv^2


Potential energy Correct Answer-energy an object possesses by virtue of
its position or composition.


electrostatic energy Correct Answer-an example of potential energy,
arises from interactions b/n charged particles


Joule (J) Correct Answer-SI unit of energy. 4.184 of these equals 1
calorie


calorie Correct Answer-traditional unit of energy. 1 of these equals
4.184J


Nutritional Calorie conversion Correct Answer-Cal=1000cal=1 kcal


system Correct Answer-the part of the universe we are interested in
studying.

, Suroundings Correct Answer-the rest of the universe (other than the
system)


Force Correct Answer-a push or pull exerted on an object.


Work Correct Answer-the energy used to move an object against a force.
w= F x d


Heat Correct Answer-the energy transferred from a hotter object to a
cooler one.


energy Correct Answer-the capacity to do work or to transfer heat.


First law of thermodynamics Correct Answer-states that energy cannot
be created or destroyed. Also known as the law of conservation of
energy. IN other words, energy of system + surroundings is constant.
Therefore, any energy transferred from a system must be transferred to
the surroundings (and vice versa)


Internal energy Correct Answer-The total energy of a system. The sum
of all the kinetic and potential energies of all components of the system.


Change in internal energy Correct Answer-delta E= Efinal-Einitial
This is the equation for

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