The main reason is simply one of dichotomy: either a substance is pure or it is not pure. If it is not pure then it consists of two (or more) substances which are chemically separate - a mixture.
In this type of classification other situation doesn't exist.
Matter is classified as "mixtures" and "pure substances".
true for A+ :)
true for A+ :)
A mixture differs from a compound in that is not chemically bonded together. The mixture is generally mechanically combined, which may be as simple as stirring, or as intensive as using centrifuge to combine the parts.
true for A+ :)
A solution is considered a homogeneous mixture of two or more substances; solutions are generally liquids but sometimes solid. For gases the term is not so adequate.
yes matter can be both pure substances and mixtures
Its a mixture
A mixture.
A MIXTURE is matter made up of two or more substances that are combined physically, but keep their individual properties.
mixture
This is a mixture.