What property describes a mixture that has a uniform composition throughout?

• A. Heterogeneous mixture
• B. Homogeneous mixture
• C. Suspension
• D. Colloid

Answer: (B)

A mixture that has a uniform composition throughout is defined as a homogeneous mixture. This means that the individual components are distributed evenly and cannot be distinguished from one another, even at a microscopic level. Examples include solutions like saltwater, where the salt is fully dissolved in the water and the composition is the same throughout the entire solution.

In contrast, a heterogeneous mixture consists of physically distinct parts, each with different properties. For instance, a salad or a mixture of sand and salt can be easily identified as comprising different components.

Suspensions are a specific type of heterogeneous mixture where solid particles are dispersed in a liquid but are large enough that they will eventually settle out over time, such as muddy water.

Colloids are mixtures where fine particles are dispersed within a continuous medium and, while they may appear homogeneous, they exhibit properties like the Tyndall effect due to their particle sizes. However, they can have components that are not completely uniform when examined closely.

Therefore, the property that accurately describes a mixture with a uniform composition throughout is that of a homogeneous mixture.