Humber Admissions Practice Test

A homogeneous mixture is characterized by the uniform distribution of its components, meaning that the different substances blend together so thoroughly that they cannot be distinguished from one another. This uniformity results in a single-phase system, where any sample taken from the mixture will have the same composition and properties throughout.

In the context of the other options, the first choice describes a heterogeneous mixture, where different materials are easily seen and identified. The third choice refers to a scenario found in suspensions, where larger particles might settle to the bottom over time, indicating a lack of uniformity. The fourth option implies a mixture classification based on physical states, which does not accurately define the even distribution characteristic of a homogeneous mixture. Thus, the correct characterization of a homogeneous mixture is the even distribution of multiple molecules throughout the mixture, making choice B the appropriate selection.