What term describes a mixture that is NOT uniform in composition, e.g., oil and water?

What term describes a mixture that is NOT uniform in composition, e.g., oil and water?

• A. Homogeneous Mixture
• B. Heterogeneous Mixture
• C. Solution
• D. Pure Substance

Answer: (B)

A heterogeneous mixture describes something not uniform in composition. In oil and water, you can see two distinct regions or phases, and the proportions of oil and water vary from one spot to another. That visual and compositional variation is the hallmark of a heterogeneous mixture. By comparison, a homogeneous mixture has the same composition throughout, a solution is a type of homogeneous mixture, and a pure substance is a single substance with a fixed composition.

A heterogeneous mixture describes something not uniform in composition. In oil and water, you can see two distinct regions or phases, and the proportions of oil and water vary from one spot to another. That visual and compositional variation is the hallmark of a heterogeneous mixture. By comparison, a homogeneous mixture has the same composition throughout, a solution is a type of homogeneous mixture, and a pure substance is a single substance with a fixed composition.