Politics of France - Constitution. 1  A popular referendum approved the constitution of the French Fifth Republic in 1958, greatly strengthening the authority of the presidency and the executive with respect to Parliament.
In chemistry, a mixture is a material made up of two or more different substances which are mixed but are not combined chemically. A mixture refers to the physical combination of two or more substances in which the identities are retained and are mixed in the form of solutions, suspensions, and colloids.
Homogeneous mixtures are samples that contain more than one single substance, but they're mixed perfectly so that whatever sample of it you take, no matter from where, it will be the same as any other sample. It simply contains more than one pure substance. Salt water is such an example.