Final answer:
A homogeneous mixture, or solution, is a combination of substances that are so well mixed that the mixture demonstrates uniform composition and properties throughout, such as salt dissolved in water.
Step-by-step explanation:
A homogeneous mixture, also known as a solution, can be defined as a combination of two or more substances that are uniformly dispersed throughout a single phase. This means that the composition and properties are consistent throughout the mixture. In contrast to heterogeneous mixtures, where the individual components can often be identified, in a homogeneous mixture the different substances are so intimately mixed that they behave as a single substance. There is no variation in composition from one part of the mixture to another; therefore, the mixture has a uniform appearance and consistency.
An example of a homogeneous mixture would be salt dissolved in water. No matter how much you magnify this mixture, using a microscope or other means, you cannot distinguish the salt from the water once the salt is fully dissolved. Each portion of the solution, no matter how small, has the same proportion of salt and water. Other common examples of homogeneous mixtures include air, maple syrup, gasoline, and various beverages, where all components are distributed evenly throughout the solution.