Solutions, colloids and suspensions

Solutions: Formed from solvent and solute. NaCl solution ( NaCl is a solute and

H2O is a solvent) •Contain small particles (ions or molecules).•Are transparent.•Do not separate..•Do not scatter light.

Three types of solutions. They are:

Unsaturated solution: A Solution in which the solute concentration is lower than its equilibrium solubility.

is said to be saturated when the solvent is not capable of dissolving any more solute at a particular (definite)

temperature.

Classification of solution:

Saturated solution: solution in which the maximum amount of solute has been

dissolved. Any solute added to the solvent after the solution reaches its saturation point will not dissolve and will remain

as a precipitate

A solution is said to be super saturated when it contain a larger amount of the solute than it is necessary to form a

saturated solution than it is necessary to form a saturated solution a particular temperature. It is said to be super

saturated at that temperature. If the temperature became down/reduce it become crystal from.

Super saturated solution :

Colloids•Have medium size particles .•Cannot be filtered .•Can be separated by semipermeable membranes .

Colloids

Examples of colloids include•Fog•Milk•Blood plasma

Examples of Colloids

Scattering of a light beam as it passes through a colloid.

Tyndall Effect

Because colloids are a dispersion of many tiny particles in a solvent, we can see the

Tyndall Effect◦The beam reflects off each individual particle

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Tyndall Effect

Laser beam through silver solution

Have very large particles.Settle out .Can be filtered..

Suspensions

When mud is dissolved in water, particles of mud are distributed evenly in water. After some time, the particles of

this solution settle under water due to influence of gravity. This solution is an example of Suspension

by comparing to True Solution , particles of suspension are big enough to be seen with naked eye

by : mohamed hesham ahmed attallah

belal nour eldeen kareem alaa

2/3 group “F”