Monday, December 28, 2009

How do you transform a solid liquid into powder?

I hate chemistry!!!! :[How do you transform a solid liquid into powder?
I have heard of students thinking a powder was a liquid because it seemed to pour. There is no such thing as a solid liquid. Powder is a solid.How do you transform a solid liquid into powder?
The only solid liquid I know of is glass. It's structure stays as it goes from liquid to solid. Powdering it is easy, just bash it, grind it, heat and fast cool it. Any number of ways. If you are talking about freezing something and then powdering it, thats a different story. Commercial mills exist for liquid N2 cooling and then pulverizing with something that looks like a blender.
I doubt this is what you are after but....





Prepare a solution (some solid material DISSOLVED in a liquid). Fill this solution into a vial, then freeze. This would be your solid liquid.





Pull a good vacuum on the frozen vial, and then, SLOWLY, raise the temperature to above the melting point of the liquid, while maintaining the vacuum. The solvent will sublime (go directly to vapor phase from the solid phase) without becoming liquid and redissolving the solute.





Once all the solvent has been removed by the vacuum, the vacuum can be released, and you a left with powder in the vial.





This is a long explanation of a process called lypholization, or ';freeze drying';.
There are solids and there are liquids. I've never heard of a solid liquid.
a solid liquid?? haha re-check your question there buddy!!





But my guess what you are looking for is, supersaturate a solvent by heating it up with the solid with it, which will dissolve the solid into the solvent. Once thats done, let it sit out at room temperature for a few minutes then in an ice bath, this will recrystallize the solid back out of solution! Making crystals or a ';powder';

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