## entropy

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Joined: Fri Sep 29, 2017 7:03 am

### entropy

how does temperature and state of matter affect the entropy of a substance?

Caroline C 1G
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Joined: Fri Sep 29, 2017 7:05 am

### Re: entropy

deltaS=q/T, therefore, a greater entropy change occurs in systems at lower temperatures when energy is transferred than in systems at higher temperatures where the same amount of energy is transferred. Gases have a higher entropy than liquids and liquids have a higher entropy than solids as gases can occupy more states than liquids, and liquids can occupy more states than solids. For example, water vapor will completely fill its container, water will take the shape of its container, but may not fill the entire space depending on its volume, and ice will not take the shape of its container due to its rigidity.

Kaelie Blanes-Ronda 2L
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### Re: entropy

Lavelle compared temperature and entropy with sneezing in a library (low noise=temperature) vs. sneezing in a busy bus station (loud noise=high temperature). The noise caused by a sneeze would cause more of a reaction in a library than a noisy place the same way entropy is more affected by low temperature than a high one. Gases are able to expand freely, liquids have more range of motion than solids so the entropy level increases from solids->liquids->gas.

Paula Dowdell 1F
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### Re: entropy

It is always good to note that if you increase temperature, you increase entropy.

Ramya Lakkaraju 1B
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Joined: Fri Sep 29, 2017 7:03 am

### Re: entropy

Increasing volume also results in an increase in entropy since the gas can now have more microstates.

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