What is the First Law of Thermodynamics?
Laws of Thermodynamics

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Physics
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9th - 12th Grade
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Hard
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1.
FLASHCARD QUESTION
Front
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 the Second Law of Thermodynamics?
Back
The Second Law of Thermodynamics states that in any energy transfer, the total entropy of a closed system can never decrease over time. It implies that natural processes tend to move towards a state of disorder or randomness.
3.
FLASHCARD QUESTION
Front
What is entropy?
Back
Entropy is a measure of the disorder or randomness in a system. Higher entropy indicates a greater degree of disorder.
4.
FLASHCARD QUESTION
Front
What is a calorimeter?
Back
A calorimeter is a device used to measure the amount of heat involved in a chemical reaction or other processes.
5.
FLASHCARD QUESTION
Front
What happens to energy in an isolated system?
Back
In an isolated system, the total energy remains constant; energy can neither enter nor leave the system.
6.
FLASHCARD QUESTION
Front
What is heat transfer?
Back
Heat transfer is the movement of thermal energy from one object or substance to another due to a temperature difference.
7.
FLASHCARD QUESTION
Front
What is the relationship between heat lost and heat gained in a calorimeter?
Back
In a calorimeter, the heat lost by one object is equal to the heat gained by another object, assuming no heat is lost to the surroundings.
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