A heterogeneous mixture is a mixture in which the composition is not uniform throughout the mixture. ... A phase is any part of a sample that has a uniform composition and properties. By definition, a pure substance or a homogeneous mixture consists of a single phase. A heterogeneous mixture consists of two or more phases.
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A heterogeneous mixture is a mixture in which the composition is not uniform throughout the mixture. ... A phase is any part of a sample that has a uniform composition and properties. By definition, a pure substance or a homogeneous mixture consists of a single phase. A heterogeneous mixture consists of two or more phases.