What type of mixture has a uniform density throughout and no distinguishable components?

A homogeneous mixture has a uniform density throughout and no distinguishable components. This means that the composition is consistent across the entire mixture, making it appear uniform to the naked eye. An example of a homogeneous mixture would be salt water, where the salt is completely dissolved in the water, resulting in a consistent concentration and appearance.

In contrast, heterogeneous mixtures contain components that are distinguishable and vary in composition. For example, a salad is a heterogeneous mixture because you can see and separate the individual ingredients. Compounds consist of two or more elements that are chemically bonded together in a fixed ratio, and while they can be homogeneous in their composition (like water), they are not mixtures as they can't be physically separated. Solutions are a specific type of homogeneous mixture, but the broader category of a homogeneous mixture encompasses both solutions and other uniform mixtures.