I need some help getting background information for my lab report for science. I need some information about what makes something a colloid (like butter, for example). I would really appreciate any help with this. Thanks in advance!!!
Okay, so I just finished doing an experiment, which was to make butter. I put a marble inside of a container, and filled it with heavy cream. I kept shaking it for 10 minutes, and there was a lump of "butter" inside the jar, with a liquid surrounding it. Then I let it sit for 10 minutes, and it was mostly just a lump of butter without a lot of liquid. What kind of mixture is that liquid??? And if you can, please help answer this question, too : What do you think was happening at the point when a change was happening in the container???
I REALLY APPRECIATE ANY HELP!!! PLEASE AND THANKS!!!
REMEMBER: 10 POINTS TO THE 1ST BEST ANSWER!!!
2007-02-11 06:56:52 · 7 answers · asked by Dee 6 in Education & Reference ➔ Homework Help
You'll find the answer to your question here:
http://www.ifm.liu.se/~boser/surfacemodes/L18.pdf
and this might help too:
http://en.wikipedia.org/wiki/Colloid
2007-02-11 07:01:05 · answer #1 · answered by GoodAdvice 2 · 1⤊ 0⤋
In general, a colloid or colloidal dispersion is a substance with components of one or two phases, a type of mixture intermediate between a homogeneous mixture (also called a solution) and a heterogeneous mixture with properties also intermediate between the two. Typical membranes restrict the passage of dispersed colloidal particles more than they restrict the passage of dissolved ions or molecules; i.e. ions or molecules may diffuse through a membrane through which dispersed colloidal particles will not. The dispersed phase particles are largely affected by the surface chemistry existent in the colloid.
Many familiar substances, including butter, milk, cream, aerosols (fog, smog, smoke), asphalt, inks, paints, glues, and sea foam are colloids. This field of study was introduced in 1861 by Scottish scientist Thomas Graham.
The size of dispersed phase particles in a colloid range from one nanometer to one micrometer. Dispersions where the particle size is in this range are referred to as colloidal aerosols, colloidal emulsions, colloidal foams, or colloidal suspensions or dispersions. Colloids may be colored or translucent because of the Tyndall effect, which is the scattering of light by particles in the colloid.
more info at
http://en.wikipedia.org/wiki/Colloid#Classification_of_colloids
2007-02-11 07:10:38 · answer #2 · answered by Vincent W 3 · 0⤊ 1⤋
by aggravating, churning, the milk there was a chemical reaction which solidified the butter from the milk.
The liquid is just whole milk not raw milk. Raw milk is from the cow and that has butter content or cream.
2007-02-11 07:06:16 · answer #3 · answered by Silly Girl 5 · 1⤊ 2⤋
Iro ore, Boxite, copper nodules are ores. Mettles are stumbled on interior the range of Ores. seaving, distilation, filtration...etc ample meant actual accessible. Gold petorlieum uranium at the instantaneous are not actual accessible, they are scarce mine. copper became first exploited in historic civilization
2016-11-27 01:24:29 · answer #4 · answered by ? 4 · 0⤊ 0⤋
Homogenous mixture
2007-02-11 07:02:03 · answer #5 · answered by Anonymous · 1⤊ 0⤋
how is it possible for you to give 10 pts as a "special"thing? You always get 10pts is you answer is the BEST ANSWER
2007-02-11 07:14:36 · answer #6 · answered by pi-man 2 · 0⤊ 1⤋
i dont know if im right or not but i think its heavy cream
2007-02-11 07:00:28 · answer #7 · answered by Baby Gurl :) 1 · 0⤊ 2⤋