Chapter 2

Dapitan, Sherwin M. Ab 1st /1 Chemistry

*Solution*

Solutions are groups of molecules that are mixed up in a completely even distribution. Scientists say that solutions are homogenous systems. Everything in a solution is evenly spread out and mixed together. Other types of mixtures can have a little more of one thing (higher concentration) on one side of the liquid when compared to the other side.

Example :

compare sugar in water (H2O) to sand in water. Sugar dissolves and is spread throughout the glass of water. The sand sinks to the bottom. The sugar-water could be considered a solution. The sand-water combination is a mixture.

A simple solution is basically two substances that are going to be combined. One of them is called the solute. A solute is the substance to be dissolved (sugar). The other is a solvent. The solvent is the one doing the dissolving (water). As a rule of thumb, there is usually more solvent than solute. Be patient with the next sentence as we put it all together. The amount of solute that can be dissolved by the solvent is defined as solubility

*components of a solution *

A solution is a homogeneous mixture of particles (ions, atoms, or molecules). Since it is homogeneous the component parts cannot be easily identified. It is made up of the solute, which is present in lesser amount and the solvent, which is present in greater amount. The solute is the dissolved medium while the solvent is the dissolving medium of the solution. Water is not a universal solvent. If it were, it should dissolve solutes and if it is a universal solvent, it should dissolve everything. But clearly it does not do that. Otherwise fish and other aquatic life would all be dissolved in the ocean; we would dissolve in the water of our cells. It might be a common solvent, because it dissolves many things, but there are just as many things it does not dissolve like metals, rocks, plastics, glass, fats, cellulose, many proteins. Organic...