Mixture

	Email		Print
	Bookmark		Link

Mixture

In chemistry

Chemistry

Chemistry is the science concerned with the composition, structure, and properties of matter, as well as the changes it undergoes during chemical reactions....
, a mixture is a substance made by combining two or more different materials without a chemical reaction occurring (the objects do not bond together).

While there are no physical changes in a mixture, the chemical properties of a mixture, such as its melting point

Melting point

The melting point of a solid is the temperature range at which it changes states of matter from solid to liquid. At the melting point the solid and liquid phase exist in equilibrium....
, may differ from those of its components.

Discussion

Ask a question about 'Mixture'

Start a new discussion about 'Mixture'

Answer questions from other users

Full Discussion Forum

Recent Posts

Is glass in a window a mixture

Encyclopedia

In chemistry

Chemistry

Melting point

Separation process

In chemistry and chemical engineering, a separation process is used to transform a mixture of substances into two or more distinct products. The separated products could differ in chemical properties or some physical property, such as size, or crystal modification or other separation into different components....
into its original components by mechanical means. Mixtures are either homogeneous or heterogeneous

Heterogeneous

Heterogeneous is an adjective used to describe an object or system consisting of multiple items having a large number of structural variations. It is the opposite of homogeneous, which means that an object or system consists of multiple identical items....
.

Mixtures are the product of a mechanical blending or mixing of chemical substance

Chemical substance

A chemical substance is a material with a specific Empirical formula. It is a concept that became firmly established in the late eighteenth century after work by the chemist Joseph Proust on the composition of some pure chemical compounds such as basic copper carbonate....
s like elements

Chemical element

A chemical element is a type of atom that is distinguished by its atomic number; that is, by the number of protons in its atomic nucleus. The term is also used to refer to a pure chemical Chemical substance composed of atoms with the same number of protons....
and compounds

Chemical compound

A chemical compound is a Chemical substance consisting of two or more different chemical element Chemical bond together in a fixed mass ratio that can be split into simpler substances....
, without chemical bonding or other chemical change, so that each ingredient substance retains its own chemical properties and makeup.

Suspensions

A heterogeneous mixture is where it is not evenly distributed within the mixture. A suspension is when the particles of one substance are suspended in the other substance (the two substances do not mix into a 'seam-less' mixture- a 'whole'). An example of a suspension is putting flour in water. You can see the water as a separate substance from the particles of flour (the flour is obviously not blended with the water). One Example Is Salad. If you mix the salad it doesn't hold a form but still mixes. Another example is a cake.

Colloidal dispersions

Colloids are homogeneous mixtures in which the particles of one or more components have at least one dimension in the range of 1 to 1000 nm, larger than those in a solution but smaller than those in a suspension. Colloids are the same as suspensions, except they don’t leave sediments. In general, a colloid or colloidal dispersion is a substance with components of one or two phases. It creates the Tyndall effect

Tyndall effect

The Tyndall effect is an effect of light scattering by colloid particles or particles in Suspension . It is named after the 19th century Irish scientist John Tyndall....
when light passes through it. A colloid will not settle. Jelly, milk, blood, paint, fog, shampoo, and glue are examples of colloid dispersions.

Mixtures are made of two or more substances - elements, compounds, or both - that are together in the same place but are not chemically combined. Mixtures differ from compounds in two ways. Elements and compounds are pure subsances but most of the materials you see every day are not. Instead they are mixtures.

Mixtures and compounds

A compound is not a mixture. A compound has very different properties than the elements it is made of, but a mixture contains several substances which keep their properties.