Practice Second Law Of Thermodynamics And Entropy (4.3) - Theme B: The Particulate Nature of Matter
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Second Law of Thermodynamics and Entropy

Practice - Second Law of Thermodynamics and Entropy

Learning

Practice Questions

Test your understanding with targeted questions

Question 1 Easy

What is entropy?

💡 Hint: Think about how disorder relates to energy.

Question 2 Easy

State the Clausius Statement of the Second Law.

💡 Hint: Consider heat flow directions.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What does the Second Law of Thermodynamics state?

Entropy can be negative.
Entropy increases in spontaneous processes.
Energy is created.

💡 Hint: Consider natural processes.

Question 2

True or False: It is possible to build a perfect heat engine.

True
False

💡 Hint: Reflect on energy transformations.

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Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

A heat engine operates between a hot reservoir of 600 K and a cold reservoir of 300 K, absorbing 800 J of heat. Calculate: a) its efficiency, b) work done, and c) heat expelled.

💡 Hint: Use the Carnot efficiency formula for part (a).

Challenge 2 Hard

Calculate the change in entropy when 2 kg of water at 100 °C completely vaporizes into steam at the same temperature.

💡 Hint: Identify the mass and the latent heat of vaporization.

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Reference links

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