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1=1=?

Science brain teasers require understanding of the physical or biological world and the laws that govern it.

 

Puzzle ID:#39051
Fun:*** (2.42)
Difficulty:*** (2.12)
Category:Science
Submitted By:AndrewWalkerAfi*****!
Corrected By:calmsavior

 

 

 



One ml of pure water is equal to one cubic cm and is one gram. But Jonie had a sample of one ml of pure water but its mass was slightly more than a gram. How can this be?





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Comments

tpg76us**
Nov 03, 2007

Good answer, but a more common explanation would simply to have water that is cooled a little. Your density statement is only precisely true at 25 C (and 1 atm). Water that is cooled to, say, 20 C will weigh more - per cc.
(Be careful, though - as water expands again, upon cooling, as it approaches the freezing point. But not around 20 C.

See? No nuclear chemistry needed for a plausible answer/explanation.
AndrewWalkerAfi*
Nov 03, 2007

Thanks for the tip. I know that at 4 deegrees celsius is when water begins to expand.
AndrewWalkerAfi*
Nov 03, 2007

This is also my first teaser.
jasmin215**
Nov 03, 2007

very cute, never heard of heavy water, i hear of hard water but never measured it nice job for your first one
ElectronJohn*us*
Nov 28, 2007

Nice teaser. I knew about heavy water and figured that was what you were talking about even though you did not stipulate STP (Standard Temperature and Pressure).
fizzmaisterAus*
Mar 10, 2008

@electron. At STP it would be ice.
stephiesd**
Mar 26, 2008

Hahaha! Yes! I just learned about heavy water last Wednesday in Chemistry class.

Well, I still got it wrong, but still.
Wa11E*en*
Sep 20, 2008

Thanks for the tip. I know that at 4 deegrees celsius is when water begins to expand

Yes - which water... pure, impure, heavy?
princess2007A*
Mar 09, 2011

I actually guessed both the heavy water and temperature difference options! I think they're both valid answers. For a first teaser, this is realllly good!
Candi7tus*
Jun 12, 2012

Heavy Water? Never heard of it. Or if I did, I forget it. I immediately thought that the water was cooled.



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