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Stupid question of the day: Does an icecube weigh more than the liquid water it contains?

Posted by TWuG Jul 28 '10, 07:51

Everything I know says it should not. But then my mind reminded me there's a lot I don't know. So now I have a stupid question nagging me.

Responses:

isn't there some Avogadro's number or coefficient of friction? -- nm - budice Jul 28, 08:10
not if it the same water with the same level of salt etc. in it no -- nm - Danedukenuuk Jul 28, 07:58
1 lb of water will make 1 lb of ice, but the ice will take up 9% more space to do it -- nm - decline Jul 28, 07:58 3
- This is what I thought was true. Then my mind said "but, but.." -- nm - TWuG Jul 28, 08:00
- [deleted] 1
  - assuming 'all things remain the same' of course - decline Jul 28, 08:01
G.I. Joe says yes. Everyone else says ice is less dense than water, hence it floats. - JaxSean Jul 28, 07:57 9
- I'm not looking at density. This I know. I'm curious about actual put-it-on-a-scale weight. -- nm - TWuG Jul 28, 07:59 8
  - The link explains it pretty well. "The ice structure takes up more volume than the liquid water molecules, hence ice is less dense than liquid water." -- nm - JaxSean Jul 28, 08:03
  - You put an ice cube in a cup on a scale and let it melt and it'll weigh exactly the same before and after. -- nm - Ender Jul 28, 08:00 4
    - (Barring evaporation/sublimation) -- nm - Ender Jul 28, 08:01 3
      - in normal condition the evaporation is almost not measuable -- nm - Danedukenuuk Jul 28, 08:03 2
        
        Sure, but over a long enough time frame all you're going to have left are the minerals that were in the water. -- nm - Ender Jul 28, 08:06 1
        
        fastest to do on the brink of the dead sea i think -- nm - Danedukenuuk Jul 28, 08:06
  - [deleted] 1
    - Exactly. But my mind was having fun with me today and made me doubt that. - TWuG Jul 28, 08:01
It weighs exactly as much as the water it contains, but it weighs less than the water it displaces. - Ender Jul 28, 07:56
it floats on water, so no -- nm - Roger More Jul 28, 07:53 1
- that just means it's a witch -- nm - oblique Jul 28, 08:03
answer - tRuMaN Jul 28, 07:53 14
- You just explained GI Joe. -- nm - Will Hunting Jul 28, 07:56 12
  - Now explain the effing jet catching up to the missiles. -- nm - Ender Jul 28, 07:57 11
    - they were moving vertically against the rotation of the earth's hemispheres while simultaneously overtaking the rockets via quantum mechanics -- nm - Beaker Jul 28, 08:00 10
      - 2012? same thing -- nm - Roger More Jul 28, 08:07 1
        
        no, that was caused by wind sheer affecting the velocity on one hand and dampening effects caused by earth's rotation on the other -- nm - Beaker Jul 28, 08:10
      - So you're saying a wizard did it? -- nm - Ender Jul 28, 08:02 7
        
        pretty much -- nm - Beaker Jul 28, 08:03
        
        no, the jet was just going faster -- nm - prayformojo Jul 28, 08:02 5
        
        depends on the jet and missile -- nm - Danedukenuuk Jul 28, 08:06 4
        
        From Moscow to DC in 18 minutes, iirc. -- nm - Will Hunting Jul 28, 08:08 3
        
        thats som g-force rith there - Danedukenuuk Jul 28, 08:14
        
        The jet had a top speed of Mach 6. Moscow-to-DC in 18 minutes is something like Mach 22. -- nm - Ender Jul 28, 08:14 1
        
        4 times SR-71 speed? - Danedukenuuk Jul 28, 08:15
- But aren't density and weight different things? Would a volume of water x weigh the same in both - TWuG Jul 28, 07:56
Of course - prayformojo Jul 28, 07:52
I say "no" -- nm - oblique Jul 28, 07:51

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Stupid question of the day: Does an icecube weigh more than the liquid water it contains?

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