A homogeneous mixture is a type of mixture in which the composition is uniform throughout the mixture. This means that the components that make up the mixture are distributed uniformly, and there is only one phase of matter observed in a homogeneous mixture. Homogeneous mixtures can be gaseous, liquid, or solid. Examples of homogeneous mixtures include air, sugar water, rainwater, vinegar, steel, and mouthwash. In contrast, a heterogeneous mixture is a type of mixture in which the components are not uniformly distributed throughout the mixture. Heterogeneous mixtures can have visually distinguishable components.