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Author Topic: What is Jello (Gelatin Dessert)?  (Read 3447 times)

Offline CliffordK

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What is Jello (Gelatin Dessert)?
« on: 21/02/2012 04:17:32 »
What is Jello (Gelatin Dessert)?

Solid?
Liquid?

Neither?

When anhydrous, it seems to be a crystalline solid.

Add hot water, and it seems to melt.

It seems to go through a phase change around room temperature, to make the wiggly jiggly stuff.

Toss it into the freezer, and it goes through another phase change, and turns to crystalline ice.

So, what phase is the wiggly jiggly stuff?




 

Offline Geezer

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Re: What is Jello (Gelatin Dessert)?
« Reply #1 on: 21/02/2012 06:28:54 »
It used to be horses hooves, but I'm not sure they do that anymore..
 

Offline Bored chemist

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Re: What is Jello (Gelatin Dessert)?
« Reply #2 on: 21/02/2012 20:05:41 »
It's a solid. It just is a bit softer and more elastic than most.
 

Offline RD

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Re: What is Jello (Gelatin Dessert)?
« Reply #3 on: 21/02/2012 20:22:33 »
It used to be horses hooves, but I'm not sure they do that anymore..

It is an animal product ...



So you have an excuse not to give any of your jelly-babies to vegetarians.
« Last Edit: 21/02/2012 20:27:13 by RD »
 

Offline Geezer

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Re: What is Jello (Gelatin Dessert)?
« Reply #4 on: 22/02/2012 00:08:50 »
Come to think of it, maybe that was glue!
 

Offline SeanB

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Re: What is Jello (Gelatin Dessert)?
« Reply #5 on: 23/02/2012 19:25:25 »
And is all Kosher.............
 

Offline damocles

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Re: What is Jello (Gelatin Dessert)?
« Reply #6 on: 24/02/2012 05:13:20 »
It is neither liquid nor solid, it is a gel; a gel is a colloidal system with open microchannels (actually nanochannels) for liquid flow and a cage-like solid framework. In this case the liquid is water with dissolved sugar and a little of the dissolved protein gelatin; the solid framework is amorphous solid gelatin, an elastomer.

For more info, check out gel, and/or colloid, and/or gelatin, and/or elastomer in a web search.
« Last Edit: 24/02/2012 05:15:42 by damocles »
 

Offline CliffordK

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Re: What is Jello (Gelatin Dessert)?
« Reply #7 on: 24/02/2012 08:05:31 »
Thanks damocles,

That explains why you can freeze Jello, and it becomes solid ice.

If it was a true solid in its jiggly form, then the water molecules would be bound to the protein molecules, which isn't the case.
 

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Re: What is Jello (Gelatin Dessert)?
« Reply #7 on: 24/02/2012 08:05:31 »

 

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