What does chromatography mean and what is a colloid?

Answer 1

Chromatography is a technique for separating molecules based on differential absorption and elution. In other words, a term for separation methods in flow of a fluid carrier over a non mobile absorbing phase.
A colloid is the suspension of small particles dispersed in another substance or the particles that are suspended in a colloid solution.

Answer 2

chromatography is the separation of constituent chemicals or dyes from a solution.
A colloid is a state between a solution and a suspension. Basically, the particles do not entirely dissolve in the liquid medium (forming ionic/polar bonds). Instead, the solute bonds with one another as well as with the water molecules.
An example of a colloid would be jelly.

Answer 3

There are many different types of chromatography.

Paper, TLC (Thin Layer Chromatograpy), column, and gas-liquid chromatography. I'm sure there are other types but I haven't dealt with them.

Chromatography is used to separate and or identify components of a mixture.

In general, a colloid or colloidal dispersion is a substance with components of one or two phases, a type of mixture intermediate between homogeneous solution and heterogeneous mixture with properties also intermediate between a solution and a mixture. Typical membranes restrict the passage of dispersed colloidial 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 diffuse. 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.

Answer 4

Colloids are mixtures whose particles are suspended and never settle out. They appear to be homogenous because you cannot see the individual particles. However, if you shine a light through them, the particles will scatter light. This is called the Tyndall Effect. Examples of colloids are paints, mud, gelatin, milk, may, whipped cream, fog, etc.

A previous poster already gave a great definition of chromatography, so I won't repeat that one.

Hope this helps! :)

Answer 5

chromatography is simply separation. there are several techniques and ways of demoing it (wikipedia is a good start to learn more)

a colloid is a large particle in a liquid think milk it has fat and other particles in it.