– What happens to ice water in a vacuum flask?

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So, I was drinking from my flask. I put ice water inside. (Basically some ice cubes and water)
If the flask is scientifically tested that it drops by 1°c per 16 hours. Wouldn’t the water level rise in the flask as the ice melts? But since it is a vacuum flask, it would hold the water in and prevent it from overflowing. (Rubber cap with tight insulation)

So, if the ice melts and the water level can’t increase wouldn’t the ice cube not melt and remain ice forever?

In: Physics

3 Answers

Anonymous 0 Comments

Water level would drop because water expands when it freezes and contracts when it melts. Here the water level dropping pulls a vacuum inside the flask making it not want to melt the ice and thus increase vacuum as fast.

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