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that's problably a very noob question, and answer that i found is: the water volume was always the same, what is kinda obivius, but doesn't seen enought to me. So I can't stop thinking, were did the extra ice volume above the water line goes, I had a tought, and a wanna know if it makes any sense.

Is that volume above the water line, exactly the air volume inside the whole ice cube that will be lose during the melting?

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When water freezes, it expands. The part of the ice above the waterline is the amount the volume increased when it froze. The water's weight does not change from liquid to ice state. Therefore the ice displaces the same weight of water when it is frozen as when it is a liquid, so the level does not change.

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  • $\begingroup$ An ice cube displaces its weight in water, but not its volume. $\endgroup$
    – David White
    Commented Apr 27, 2020 at 21:07
  • $\begingroup$ @DavidWhite Exactly, I will edit "amount" to "weight" to be more clear. Thanks. $\endgroup$
    – Adrian Howard
    Commented Apr 28, 2020 at 5:30

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