Humber Admissions Practice Test

What is a homogeneous mixture?

1. A mixture in which different materials can be distinguished easily

2. A mixture in which multiple molecules are evenly distributed throughout the mixture

3. A mixture that settles at the bottom over time

4. A mixture that includes gas and solid substances

The correct answer is: A mixture in which multiple molecules are evenly distributed throughout the mixture

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.