TBR Chem 7.21 question

[Status Sciaticus]

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So the question asks what will happen to a glass filled with water to the brim with an ice cube in it as it melts.

The correct answer was that it will stay level..

The answer I chose was that it level would decrease.

My reasoning was that water expands when frozen and thus occupies a larger area than if its in a liquid state. So if it was put back into a liquid state, it would result in a lower water level.

Can anyone help explain the right answer?

 

[Postictal Raiden]

So the question asks what will happen to a glass filled with water to the brim with an ice cube in it as it melts.

The correct answer was that it will stay level..

The answer I chose was that it level would decrease.

My reasoning was that water expands when frozen and thus occupies a larger area than if its in a liquid state. So if it was put back into a liquid state, it would result in a lower water level.

Can anyone help explain the right answer?

Yes, that's true, but also remember that a portion of the ice cube floats on above the liquid and it will add to the volume of the liquid once it melts.