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[ABC2019]

surely not, or else she created ice of density 1, and that's revolutionary;)

But what are you singing to us? Already the density of high density amorphous ice (density equal to 1.17g.cm^-3
And in its form superionic water comes to us in the form of ice about sixty times denser than "0,999x"

(I add to the list)

voui in a plastic bottle under an atmosphere, of course

[Obamot]

Read your sentence again!

Ice of density> 1 is NOT revolutionary.

[Christophe]

I really like the experience of gaseous CO2 poured on the candles and which extinguishes them:

for the bottle of water which freezes, I suspect a scam, there is no increase in volume observed!
I wonder if she did not put something else (we can do the same with a supersaturated solution of sodium sulphate which crystallizes)

I am very amazed that YOU self-proclaimed the Great Scientist of forum you do not know supercooling ...

It works with fairly pure water ... and with beer ... I have made 3 in my life, once in water and 2 times in beer

And the additional 4% of volume is largely absorbed by a PET bottle ... unlike glass ...

[ABC2019]

I am very amazed that YOU self-proclaimed the Great Scientist of forum you do not know supercooling ...

It works with fairly pure water ... and with beer ... I have made 3 in my life, once in water and 2 times in beer

And the additional 4% of volume is largely absorbed by a PET bottle ... unlike glass ...

I know of course supercooling, but the increase in volume is 10%, not 4%, and I cannot see any deformation of the bottle in the eye, but there may be one that is not not clearly visible ... I'll try;).

[Christophe]

Why 10% and not 4%? Ice is 4% less dense than liquid water ... right?

4% or even 10% are I think absorbable by a PET bottle without large deformations ... visible on a quick video ...

The cow if each of the experiences of this video makes us think so much we have not finished

[Obamot]

I know of course supercooling

I have a modest hypothesis at 2 cents of € uros: in supercooling there is fusion: and the dissipated part of the energy resulting from the reaction, which necessarily ALSO produces heat as much as ice, t ' what does Einstein do with it?

[ABC2019]

Why 10% and not 4%? Ice is 4% less dense than liquid water ... right?

no, density 0,91, so 9% more volume more exactly, where do you get this 4%?

[ABC2019]

I know of course supercooling

I have a modest hypothesis at 2 cents of € uros: in supercooling there is fusion: and the dissipated part of the energy resulting from the reaction, which necessarily ALSO produces heat as much as ice, t ' what does Einstein do with it?

heat raises the temperature, if there is supercooling, the initial temperature is <0 ° C. Crystallization causes it to rise, then there are two cases depending on the initial temperature: either it rises but at a final temperature always <0 ° C and in this case all the water freezes, or it rises to 0 ° C and in this case only part of the water freezes, and we finish with a water-ice mixture at equilibrium at 0 ° C.

But that does not change the density of the ice which depends very little on the temperature of course.

[Christophe]

Why 10% and not 4%? Ice is 4% less dense than liquid water ... right?

no, density 0,91, so 9% more volume more exactly, where do you get this 4%?

From my 4th year physics class !!! So it's dated! Surely an update ...

Good ok for 9% that does not change the worry that a PET bottle can very well absorb these 9% on a video without you being able to see it ...

Supercooled ice would have a different density?

[Obamot]

So that's it, the result is a kind of water / ice emulsion-crystallization => towards a point of equilibrium, so forces cancel each other out, in a way. So, without wanting to be categorical, it will NOT be 9%

In addition, these bottles are intended to support the release of Co² for example when a bottle of soda has been strongly shaken and in addition has been left in direct sunlight: it does not explode.

Thermal expansion coefficient data for PET = 20 to 80 (x10-6 K-1) see here => http://www.goodfellow.com/F/Polyethylen ... alate.html
It seems huge, so 9% ...
It's terrible, you see the video of a funny science experiment, and you suspect a scam! Watch out, Raoult is in the game, it's a conspiratorial video