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Author fridays odd question
Matt L
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Registered: 17th Apr 06
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17th Jun 11 at 07:10   View User's Profile U2U Member Reply With Quote
take 1 plastic bottle fill it with a quater of sparkling water shake = bottle expands which i understand however... If i then empty it and do the same with still water the bottle does the opposite and shrinks (cant think of the proper word), yet if i fill it first time with still water its fine doesnt do anythin and stays the same shape.

Why does it shrink if i fill it with sparkling first?
spencer88
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Registered: 6th Oct 08
Location: cornwall
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17th Jun 11 at 07:22   View User's Profile U2U Member Reply With Quote
Chemical reaction between the normal water and the remains of the sparkling?

[Edited on 17-06-2011 by spencer88]
Simon
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Registered: 24th Apr 03
Location: Oxfordshire
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17th Jun 11 at 07:47   View User's Profile U2U Member Reply With Quote
why are you doing this?
AndyKent
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Registered: 3rd Sep 05
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17th Jun 11 at 07:48   View User's Profile U2U Member Reply With Quote
Water will be combining with the carbon dioxide = reduction in gas?

[Edited on 17-06-2011 by AndyKent]
oceansoul
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Registered: 19th Jun 06
Location: Sunbury, Surrey
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17th Jun 11 at 08:35   View User's Profile U2U Member Reply With Quote
Magic.
antnee
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Registered: 30th Dec 07
Location: Cov Drives: Clio 197
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17th Jun 11 at 09:28   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by oceansoul
Magic.
Sam
Moderator
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Registered: 24th Dec 99
Location: West Midlands
User status: Offline
17th Jun 11 at 09:33   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Matt L
... the bottle does the opposite and shrinks (cant think of the proper word)


Contract is the word you are looking for.
Matt L
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Registered: 17th Apr 06
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17th Jun 11 at 11:44   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Sam
quote:
Originally posted by Matt L
... the bottle does the opposite and shrinks (cant think of the proper word)


Contract is the word you are looking for.


cheers totally went blank when typing it out .

im going for the magic option then tbh.
Sam
Moderator
Premium Member

Registered: 24th Dec 99
Location: West Midlands
User status: Offline
17th Jun 11 at 12:42   View User's Profile U2U Member Reply With Quote


I'm not that great on science, but I'm guessing with carbonated drinks (sparkling water, coke, etc.) if you shake them and there is nowhere for the gas to escape then whatever is holding it in will simply expand until the point of explosion.

As for the contraction in your second experiment, is because you haven't rinsed the sparkling water out of the bottle and also (I'm assuming) because there isn't enough pressure in the bottle?

 
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