A homogeneous mixture is a mixture of substances that are blended so thoroughly that one cannot see the individual components, and the composition is uniform throughout the mixture. Each sample of the mixture will contain the same proportions of components, and the mixture appears as a single phase of matter. Examples include saltwater, air, and sugar dissolved in water. Homogeneous mixtures are also called solutions when the mixing occurs at the molecular level, and they can exist in solid, liquid, or gas phases. Unlike compounds, the substances in a homogeneous mixture do not chemically bond, and they can be separated by physical means like evaporation or distillation.