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Lesson 2.8 CP /Lesson 2.9 ENH Second Law of Thermodynamics

Last updated 7 months ago
23 questions
Note from the author:
We all know that heat flows from hot things to cold things. The second law of thermodynamics is the scientific principle that
We all know that heat flows from hot things to cold things. The second law of thermodynamics is the scientific principle that
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Dispersed means that the particles are

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The first law of thermodynamics says that energy entering a system is

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The second law of thermodynamics predicts

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If no energy has entered or left the system and the potential energy of the system decreases, what type of energy has the potential energy been transformed into?

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One way to think about entropy measuring disorder is to think about the number of ways that molecules can collide with each other. Substances in which a particle can collide with every other particle have high entropy. Substances in which the neighbors are fixed the particles have low entropy. Substances in which the particles can move more freely have higher entropy. Rank the states of matter as to their relative amount of entropy from highest to lowest.

  1. liquid
  2. solid
  3. gas
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The second law says that heat will move until the temperature of the system is uniform (the same throughout the system). Why is does the system have more "order", when the coffee is hot than when it has the same temperature as the air?

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What is one way that the second law of thermodynamics affects your life?

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For heat to flow which conditions must be present?

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Two systems are in thermal equilibrium when

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Why is heat considered a less useful form of energy compared to mechanical or electrical energy?

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The efficiency of an engine is determined by

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In an open system, the second Law of Thermodynamics says that

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In an closed system, the second Law of Thermodynamics says that

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In an isolated system, the second Law of Thermodynamics says that

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When heat flows from a hot object to a cold object, the entropy of the system goes

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Adding ___________ to a system so that one part is___________ than another decreases the ____________ of the system.
Other Answer Choices:
energy
entropy
colder
hotter
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Why will there never be a machine that is 100% efficient according to the second law?

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When engineers design___________ storage systems, they always have to plan that some energy will be lost because ____________ always increases over time which is the ___________ law of thermodynamics.
Other Answer Choices:
second
entropy
energy
first
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What does the desire for useful forms of energy mean in practical terms?

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___________ spreading out and becoming less dense as it moves away from its original source means that there is less ___________ in any one place so the ____________ goes _______ .
Other Answer Choices:
up
down
energy
entropy
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How does the collision of milk particles with coffee particles relate to the phenomenon that adding cold milk to hot coffee results in a mixture whose temperature is in between the original temperature of the milk and the coffee.

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When you mix the hot water molecules and the cold water molecules, which statements are true about the water molecules at the end of the simulation?

Now you know how to run the simulation. To get out of the tutorial, click on learning outcomes and then experiment. It should look like the picture below.

Now click on run experiment and you will be to the part of the simulation where you can choose to combine either liquids or solids, their masses and their temperatures. Run some experiments putting hot solids into cold water and watch the graph view and the microscopic view. This simulation is really helpful for understanding what is happening at the particles level and will be very helpful when you are trying to explain your results for your project.
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Describe at least one experiment that you set up with the simulator. What were the results that you got? How did it help you understand heat transfer at the particle level? What changed your thinking about the process?