Last modified: Thu 10/31/2013 09:12:01 pm
BCE

Oklahoma State University

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Answer all of the questions below. If you do not know an answer enter CNA. However, it will help me the most if you answer each question with your best intuition/idea about what would be a reasonable answer.


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1. Consider the two beakers containing water, both at the same initial temperature, say 25 degrees Celsius.

The beaker on the left has 25 mLs of water and the beaker on the right has 50 mLs of water. Both have the same initial temperature. If the same amount of heat is added to both beakers, using a bunsen burner, does the beaker on the right or the beaker on the left have the higher final temperature?

left or right

Explain.

2. Consider the two beakers containing water, both at the same initial temperature, say 25 degrees Celsius.

If the final temperature of the water in both beakers is identical, is the greater amount of heat added to the beaker on the right or the beaker on the left?

left or right

Explain.

3. Consider the two beakers containing water, both at the same initial temperature, say 25 degrees Celsius.

If twice as much heat is added to the beaker on the right compared to the beaker on the left, and the final temperature of the beaker on the right is lower than the beaker on the left, which beaker has more water?

left or right

Explain.

4. Identical candles are used to add heat to three different samples all having the same mass. The three samples are heated for a short period of time (so the wood does not catch on fire.) The three different substances are wood, glass and copper. Each is a cube. Each of the three substance is heated for the same amount of time with its candle. Based on your experience/intuition order the three substances as to its final temperature.

lowest final T..........highest final T

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Briefly explain your order.

5. Where would water fit in your order? Explain.

6. Suppose you had had in view two samples of helium and you could see the atoms of helium at the atomic level. One of the samples of helium is at 25 degrees Celsius and the other is at 50 degrees Celsius. Assuming you were not told which sample was at which temperature, explain how you would identify which sample was at which temperature.

7. Is there anything about the questions that you feel you do not understand? List your concerns/questions.

8. If there is one question you would like to have answered in lecture, what would that question be?