Sink or Float, Any other water like compounds ?

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Discussion Overview

The discussion revolves around the search for compounds that, like water, are less dense in their solid state than in their liquid state. Participants explore various candidates and share their findings, while also engaging in light-hearted banter regarding the context of the question.

Discussion Character

  • Exploratory
  • Debate/contested

Main Points Raised

  • One participant mentions silicon dioxide as a potential candidate but lacks conclusive evidence regarding its density in solid and liquid states.
  • Another participant suggests gallium, providing links to external sources as evidence.
  • A different participant proposes hydrogen peroxide as a possible compound to investigate.
  • Several participants engage in humorous exchanges about the term "slab of beer" and its meaning in different regions.

Areas of Agreement / Disagreement

Participants generally agree on the challenge of finding a suitable compound but have not reached a consensus on any specific candidates, as the discussion includes multiple suggestions and clarifications about the criteria for selection.

Contextual Notes

Participants clarify that the search is specifically for compounds rather than elements, which adds a layer of complexity to the discussion.

bartieshaw
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Im not sure if anything like this has been posted before, and I am not sure if this was the right place to post the question, ao i apologise in advance if i make anyone angry...

at the beginning of the year my lecturer posted the challenge to find another compound which, like water, was lese dense in its solide state than in its liquid state.

now this question is not for marks or extra credit or anything (just a slab of beer), and at the beginning of the year i became rather obsessed with the challenge...many hours searching the net. However, exams came around and i have only just recently thought about it again.

the best thing i could come up with at the time was silicon dioxide, it had been mentioned on many sites, but i couldn't conclusively provide evidence eg. Data sheets showing density both as solid and liquid...

so i post the question, can anyone here think of a compound, which like water has a solid state that is more dense than its liquid state...?
 
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A slab of beer? Do you buy it frozen? :bugeye:
 
Danger said:
A slab of beer? Do you buy it frozen? :bugeye:

Frozen beer should be less dense than liquid beer, shame it's not a compound as such. :smile:

Come to think of it, if I were given this challenge, the first thing I'd check up on is hydrogen peroxide. Anyone?
 
Last edited:
Danger said:
A slab of beer? Do you buy it frozen? :bugeye:


haha...
no in australia we call a case i think it would be for you (4 x 6 packs) a slab of beer...though i do love my beer cold :)
 
bartieshaw said:
haha...
no in australia we call a case i think it would be for you (4 x 6 packs) a slab of beer...though i do love my beer cold :)
Oh. That's what we Canuks call a 'flat', although cans also come in 12, 15, 24 or 30 packs that are a lot easier to carry. And my brand, Keiths, for some reason comes in 8-packs instead of 6's (with a little carry handle moulded in).
 

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