Considerations. While in college, an aspiring high school physical education coach can enhance her knowledge of sports she wants to specialize in by participating in them at the varsity or intramural level. These sports can include anything from basketball and softball to tennis, field hockey and lacrosse.
A mixture is a composition of two or more pure substances. Mixtures are considered to be homogeneous or heterogeneous. A homogeneous mixture has a constant composition throughout and is commonly referred to as a solution.
A substance that has the same composition throughout. Pure substances are either elements or compounds, and should not be confused with mixtures. A homogeneous mixture is not the same as a pure substance, because although it has an unvarying composition, it cannot be reduced to a single type of atom or molecule.