In chemistry, a mixture is a material system 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 on which the identities are retained and are mixed in the form of alloys, solutions, suspensions, and colloids.
Mixtures are the product of a mechanical blending or mixing of chemical substances like elements and compounds, without chemical bonding or other chemical change, so that each ingredient substance retains its own chemical properties and makeup. Despite that there are no chemical changes to its constituents, the physical properties of a mixture, such as its melting point, may differ from those of the components. Some mixtures can be separated into their components by physical (mechanical or thermal) means. Azeotropes can be considered as a kind of mixture which usually pose considerable difficulties regarding the separation processes required to obtain their constituents (physical or chemical processes or, even a blend of them).
Famous quotes containing the word mixture:
“That clemency which the world cries up for such a mighty virtue proceeds sometimes from ostentation, sometimes from laziness and neglect, very often from fear, almost always from a mixture of all these together.”
—François, Duc De La Rochefoucauld (16131680)
“Natures law says that the strong must prevent the weak from living, but only in a newspaper article or textbook can this be packaged into a comprehensible thought. In the soup of everyday life, in the mixture of minutia from which human relations are woven, it is not a law. It is a logical incongruity when both strong and weak fall victim to their mutual relations, unconsciously subservient to some unknown guiding power that stands outside of life, irrelevant to man.”
—Anton Pavlovich Chekhov (18601904)
“There appears to be but two grand master passions or movers in the human mind, namely, love and pride. And what constitutes the beauty or deformity of a mans character is the choice he makes under which banner he determines to enlist himself. But there is a strong distinction between different degress in the same thing and a mixture of two contraries.”
—Sarah Fielding (17101768)