Practice Thermodynamics (hl Only) (B.4) - Theme B: The Particulate Nature of Matter

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9 questions

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4 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What does the First Law of Thermodynamics state?
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Think about energy changes in physical systems.
Question 2.
What is entropy?
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Consider how systems behave as they move towards equilibrium.
3Question 3.
What does the First Law of Thermodynamics state?
- Energy can be created
- Energy can be transformed
- Energy cannot be transformed
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Think about the nature of energy transfers.
4Question 4.
Entropy increases in which of the following processes?
- Condensing steam
- Ice melting
- Water freezing
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Consider the structure of molecules in solids vs fluids.
Question 5.
A gas expands in a cylinder, doing 50 J of work. If the internal energy decreases by 30 J, how much heat is removed from the gas?
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Consider how energy changes with the given parameters.
Question 6.
Explain how the principles of thermodynamics apply to the efficiency of a steam engine.
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Focus on the energy transformation processes occurring in the cycle.

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