<u><em>A mixture</em></u> is a substance that is made up of two or more substances.
A mixture may be either homogeneous or heterogeneous.
<u><em>A homogeneous</em></u> mixture is a mixture in which the components are uniformly distributed.<em><u> This means there is only one phase of matter, hence a homogeneous mixture can exist as a solid, gas or liquid.</u></em>
<em><u>A heterogeneous mixture</u></em> on the other hand is a type of mixture in which the components making the mixture are not uniform. A heterogeneous mixture contains more than one phases of matter. These types of mixtures may be either suspensions or colloids.