Heat flow requires a temperature difference. Without heat flowing from the air to the water/ice, the water and the ice would reach and remain at the same temperature, 0C, and then there would be no further heat flow. So heat flow must occur from the surroundings to the water/ice.Chronos000 said:Homework Statement
an ice cube is melted in water which is continuously stirred to be at a constant temperature of 0 degrees. the stirring is gentle enough so the work done is negligible.
my question is why in this case does the heat come from the air to melt the ice cube and not the water. why can't it be a bit of both or just the water.
The total entropy change is:also, for the total entropy change of the universe, wouldn't I just consider the S:ice + S:water = S:air?
The purpose of this experiment is to observe and understand the process of melting and its effects on the temperature and composition of the surrounding water.
The materials needed for this experiment include an ice cube, a clear glass or container, room temperature water, a thermometer, and a timer.
To conduct this experiment, follow these steps:
1. Fill the glass or container with room temperature water
2. Place the ice cube gently on the surface of the water
3. Observe the changes in the ice cube as it melts
4. Use the thermometer to measure the temperature of the water at regular intervals
5. Record your observations and data.
The expected results of this experiment include the gradual melting of the ice cube, a decrease in the temperature of the water, and the formation of a layer of cold water on top of the warmer water. You may also notice small pieces of ice floating in the water as the ice cube melts.
This experiment relates to real-life situations by demonstrating the process of melting and its effects on the temperature and composition of the surrounding environment. This is important in understanding natural phenomena such as melting ice caps, changes in ocean temperatures, and the water cycle.