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Alcohol

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

 

Puzzle ID:#4816
Fun:*** (2.82)
Difficulty:** (1.73)
Category:Science
Submitted By:missie***
Corrected By:Palsha

 

 

 



A girl was offered a drink of water with ice-cubes at a party. She narrowed her eyes and said, "This is part alcohol." How did she know?


Answer

The ice-cubes were floating in the middle of the drink. Since alcohol is less dense than ice-cubes, it floats to the top and the ice-cubes go to the middle, above the water where water stays at the bottom.
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Comments

Beelzebub*
Jun 26, 2002

I have mixed alcohol and other drinks ( most of the mixture was alcohol ) and I never noticed this before. Then again I might have been too drunk.....
mad-adeAhu*
Jun 26, 2002

if some one gave me a drink at a party, then I would hope it had alcohol in it!!!!
andy1608
Jun 28, 2002

Wouldn't the water and alcohol mix, so the alcohol became diluted, and the drink the same density throughout?
cathalmccabe
Jul 02, 2002

"I have mixed alcohol and other drinks ( most of the mixture was alcohol ) and I never noticed this before. Then again I might have been too drunk....."

If you drink vodka straight its normally 40% Alcohol. This means that the mixture is mostly water not alcohol. The highest I've drank I think is 60% (Maybe 70% MAX). If you mix these with a drink, you dilute further the alcohol
dsquared*nz*
Feb 20, 2003

I thought that the answer was going to be that there was Ouzo in the glass because when you mix water with Ouzo it goes cloudy. I figured she had seen the area around the ice cubes begin to go cloudy and therefore new there was Ouzo in the glass.
iLuVcOwS_00**
Jun 18, 2005

i luv it. good job!!!
beegum
Dec 13, 2005

Hmm...I was thinking she knew because of the extreme cold...cold ice cubes will result in an alcohol mixture with a temperature less then 32F (freezing)...now this is a property i have actually noticed...
cyberstar5150*us*
Jul 31, 2006

Um... water and alcohol DO mix, so I think this teaser is bogus.
bookworm91**
Apr 17, 2007

In theory, this would be a good way to tell. However, it would take a while for the water and the alchohol to separate, at least longer than it takes to mix the drink, then take it to the girl, wouldn't it? Things like oil and water separate very fast, because water and oil aren't compatible. But alchohol is partly water anyway, and the density isn't so incredibly different that the two liquids would separate quickly.
Correct me if I'm wrong

Now, since I don't know just how long it would take to separate, if the drink had sat for a bit before being taken to the girl, then this could work. In any case, it's a good teaser. I enjoyed it
tangled_brainAus*
Jun 18, 2008

um you ARE wrong. alcohol isn't partly water; alcoholic DRINKS are. They don't separate--in fact, they are 100% soluble in each other, making this teaser bogus,



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