Which term describes a mixture that is not uniform throughout?

• A. Compound
• B. Heterogeneous mixture
• C. Element
• D. Homogeneous mixture

Answer: (B)

Verified step by step guidance

1. Understand the definitions of the terms given: A compound is a substance formed when two or more elements chemically combine in fixed proportions.
2. An element is a pure substance consisting of only one type of atom.
3. A homogeneous mixture is a mixture that has a uniform composition and appearance throughout, meaning you cannot distinguish different parts.
4. A heterogeneous mixture is a mixture where the components are not uniformly distributed, so different parts of the mixture can be observed.
5. Since the question asks for a mixture that is not uniform throughout, the correct term is 'heterogeneous mixture'.