Spring Final 2 Flashcardizz

Flashcard
•
Chemistry
•
10th Grade
•
Hard
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14 questions
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1.
FLASHCARD QUESTION
Front
What is the first law of thermodynamics?
Back
The first law of thermodynamics states that energy cannot be created or destroyed, only transformed from one form to another. It is often expressed as ΔU = Q - W, where ΔU is the change in internal energy, Q is the heat added to the system, and W is the work done by the system.
2.
FLASHCARD QUESTION
Front
What is internal energy?
Back
Internal energy is the total energy contained within a system, including kinetic and potential energy at the molecular level.
3.
FLASHCARD QUESTION
Front
Define entropy in the context of thermodynamics.
Back
Entropy is a measure of the disorder or randomness in a system. It quantifies the amount of energy in a physical system that is not available to do work.
4.
FLASHCARD QUESTION
Front
What does the second law of thermodynamics state?
Back
The second law of thermodynamics states that the total entropy of an isolated system can never decrease over time, and is always increasing in natural processes.
5.
FLASHCARD QUESTION
Front
What is heat capacity?
Back
Heat capacity is the amount of heat energy required to raise the temperature of a substance by one degree Celsius.
6.
FLASHCARD QUESTION
Front
What is the difference between heat of fusion and heat of vaporization?
Back
Heat of fusion is the energy required to change a substance from solid to liquid at its melting point, while heat of vaporization is the energy required to change a substance from liquid to gas at its boiling point.
7.
FLASHCARD QUESTION
Front
How do you calculate the work done by a system?
Back
Work done by a system can be calculated using the formula W = ΔU + Q, where ΔU is the change in internal energy and Q is the heat added to the system.
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