Why Does Ice Appear White?

[ayham.alnasser]

nah! its not like that! boiled water! :3 if we boil water and then freeze it, will it be transparent?

Yea, it does not have to be boiled, just use hot water!

 

[Borek]

Boiling water is the simplest way of getting rid of dissolved gases.

 

[PhysicoRaj]

Boiling water is the simplest way of getting rid of dissolved gases.

I tried it, but the result was not that exciting. You can see some difference. It is still misty, probably due to stress and fractures. The only difference b/w myself and the guy in the video is that water he poured around the tray for insulation and uniform cooling.

 

[Varun Bhardwaj]

when the water is at zero degree celcius then it remains water until we move it and water molecules move creating ice. if you purchase ice from market and that ice have bubbles ,means the water of that ice is not pure.

 

[dipole]

I think vibration may work also. If you freeze the water very slowly on a vibrating surface, i think you'd be able to force a lot of the bubbles out, or at least to the surface which you could then remove.

 

[UltrafastPED]

Try http://www.instructables.com/id/make-crystal-clear-ice!/

Or http://gizmodo.com/5945245/how-to-make-the-perfect-ice-cube

Opinions vary - some explanations are here: http://blog.khymos.org/2008/04/13/ice-cubes-and-air-bubbles/