Does the same volume of water weigh the same when it is ice?
Helmut (above) gave you 2/3 of your answer, but failed to address your question specifically as to will the same volume of water weigh the same as an equal volume of ice. The 3rd part of the answer is that the same amount (the same mass) of liquid water will have a larger volume in its frozen state. And so your question becomes a bit confounded, as the volume of a quantity of water will differ between its liquid volume and its frozen volume. The same amount of water will increase in volume when frozen. So if you meant an volume of water versus an equal volume of ice, no they will not be the same, because in order for it to be an equal volume of ice, that ice must have less mass than the liquid.
