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Old 12-05-2013, 10:47 AM
Kiril Kiril is offline
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Join Date: Jun 2007
Location: District 9 CA
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Originally Posted by Smallaxe View Post
Please Note the Definitions above:

A colloid is a molecular aggregate,,, that becomes a particle of a certain size,,, and of course, size has everything to do with solution...

Particles of a certain size will stir up into water and stay in solution(sugar, for example)... Colloids are particles that may stir up in water, but then precipitate out of solution once the stirring motion has stopped(clay soil particles,, for example)...

So we got the knowledge that Colloids are 'molecular' aggregates ,,, but from our perspective,, it is a particle!!! like a grain of salt... as a visual,,, we might think of the cinder blocks as being a molecular aggregate(colloid) and then think of peds as particle aggregate or colloid aggregate or cinder block aggregate...
If you are able to think in terms of building blocks,,, all we are talking about here is starting with smallest to largest... Don't overthink it...

The term aggregate is a loaded term,,, that from the common sense perspective,,, means group or buch,,, in our current day vernacular...
So, for soils a group of molecular aggregates that color="blue"] cohere,[/color] to one another to form larger aggregates allow more pore space for water to move...

Are we on the same page yet???
No, we clearly are not. Take your own advice, note the definition which clearly states a colloid MAY be a molecular aggregate, not IS one as you have incorrectly stated.

Further, please understand what in solution and precipitate means before you use the terms, particularly since you have used them incorrectly here. A suspended solid is not in solution nor does it precipitate out of solution, it settles.

And finally, more education is again in order.
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