Freezing and Melting of Water
Hypothesis: If the probe is put into the ice water and then warm water, we will obtain a freezing and melting point, the melting point being higher than the freezing point. The freezing point should be roughly 0 degrees Celsius, and the melting point should be roughly 5 degrees Celsius.
To start, my partner and I had started with a 600 mL beaker, filled roughly one third of the way with ice. We also added roughly five tablespoons of salt. We added a temperature probe, and added it to the ice water. We calculated the mean, median, and minimum and maximum temperatures. After recording the freezing point of water, we let the thermometer thaw out a little, then we calculated the melting point of water. It would be seen that the freezing point of water was about .5 degrees Celsius.
Hypothesis: If the probe is put into the ice water and then warm water, we will obtain a freezing and melting point, the melting point being higher than the freezing point. The freezing point should be roughly 0 degrees Celsius, and the melting point should be roughly 5 degrees Celsius.
To start, my partner and I had started with a 600 mL beaker, filled roughly one third of the way with ice. We also added roughly five tablespoons of salt. We added a temperature probe, and added it to the ice water. We calculated the mean, median, and minimum and maximum temperatures. After recording the freezing point of water, we let the thermometer thaw out a little, then we calculated the melting point of water. It would be seen that the freezing point of water was about .5 degrees Celsius.
This is an image of our freezing water data after fifteen minutes. At first, we added the probe o the water. The stats read as follows : Mean- .5645. Median- .5895. Minimum temp- .3113. Maximum temp- .6426. Those are the results for the freezing test. All of our data, for both the cold and warm water test, is recorded here.
The above is an image including the freezing point and melting point. One of our mistakes, however, was that my group mis-labeled our points, so please disregard that information. What is labeled as the freezing point it actually the melting point, and vice versa. Our melting point turned out to be roughly 4.7 degrees Celsius.
In conclusion, my hypothesis was correct. The freezing point was just above 0 degrees Celsius, and the melting point was just below 5 degrees Celsius. If I was to change the experiment in any way, I would spend a little more time with more advanced settings of Logger Pro, so I could be more exact on my scientific results.
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