A mixture that appears uniform throughout is categorized as

A mixture that appears uniform throughout is categorized as homogeneous. In a homogeneous mixture, the components are evenly distributed and cannot be distinguished from one another. This uniformity means that any sample taken from the mixture will have the same composition and properties as any other sample.

For example, solutions like saltwater are homogeneous because the salt is completely dissolved in the water, creating an even distribution that looks the same throughout.

On the other hand, heterogeneous mixtures contain visibly different substances or phases. In these mixtures, the different components can often be identified separately, such as a salad or a mixture of oil and water, where the distinct substances retain their individual properties.

The terms "compound" and "elemental" refer to pure substances. A compound consists of two or more elements chemically bonded together, while an elemental substance is made up of only one type of atom. These options do not describe mixtures, whether uniform or not, making them irrelevant to the question.