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• Units of Measure
• Physics
• Weight and Mass

# How much does one gallon of solid ice weigh when it is made from distilled and pure water in a hermetically sealed container at or slightly below 32 degrees Fahrenheit?

Wiki User

2006-09-01 19:56:20

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I had to completely delete the stuff that was here; it was too off the wall. Here's a key question that goes to the wording of the question in question. (I was going to rephrase the question, but I decided it would be better to ask, instead.) Should the question have read, "How much does a solid block of ice weigh if it is made from one gallon of pure, distilled water in a hermetically sealed container at or slightly below 32 degrees F"? Note the slight difference in wording that makes a significant difference to what is implied. In my reworded question, you start out with a gallon a water and then freeze it. In the original question, it looks like you END UP with a solid block of ice that occupies a one-gallon container. Since water expands when it freezes, you would have to start out with LESS than a gallon of liquid water in order to end up with an unbroken, one-gallon container of solid ice. Since the mass of water -- or anything else!! -- doesn't increase when it freezes, a gallon of liquid water weighs as much as a solid block of ice made from a gallon of liquid water. It WILL have greater volume, however, since ice is less dense than liquid water, and might distort or perhaps burst its container as it freezes. If my wording is correct, then the ice weighs as much as it would if it were in liquid form: 8.33 pounds. See the related question to the right for more discussion.

Wiki User

2006-09-01 19:56:20