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First Law of Thermodynamics Quiz

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Questions and Answers

What does the first law of thermodynamics assert about the universe's energy?

Energy is only conserved in isolated systems.

Energy can be created or destroyed.

Energy conversion is 100% efficient.

The total energy of the universe is constant. (correct)

Which statement relates to the concept of entropy as stated in thermodynamics?

Entropy increases as temperature approaches absolute zero.

A system's entropy approaches a constant value as temperature approaches 0 K. (correct)

Entropy is a measure of energy quality.

Entropy tends to decrease in spontaneous processes.

Which of the following is a consequence of the first law of thermodynamics?

Energy loss occurs in all physical processes.

All processes in nature are reversible.

Systems will always achieve thermal equilibrium.

Energy can change form but cannot be created or destroyed. (correct)

Which statement is incorrect regarding thermal equilibrium?

<p>It requires a change in entropy.</p> Signup and view all the answers

In the context of spontaneous processes, how does entropy behave?

<p>It tends to increase, leading to greater disorder.</p> Signup and view all the answers

Study Notes

First Law of Thermodynamics

If two systems are each in thermal equilibrium with a third system, they are in thermal equilibrium with each other.
The total energy of the universe is constant.
Spontaneous processes tend toward disorder.
A system's entropy approaches a constant value as the temperature approaches 0 K. Except for non-crystalline solids, the entropy of a system at absolute zero is typically close to zero.

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Description

Test your understanding of the First Law of Thermodynamics with this quiz. Explore concepts such as thermal equilibrium, energy conservation, and entropy approaches at absolute zero. Challenge your grasp of fundamental thermodynamic principles.