Final answer:
A homogeneous mixture, also known as a solution, has a uniform composition and properties throughout. Examples include air, simple syrup, and seawater.
Step-by-step explanation:
A homogeneous mixture is a combination of substances with a composition that is uniform throughout. These mixtures are also known as solutions.
For example, air, simple syrup, and seawater are all homogeneous mixtures because they have the same composition and properties in every part of the mixture. In contrast, a heterogenous mixture, like trail mix or salad, does not have a uniform composition.
A homogeneous mixture appears as a single substance, so it is not obvious that two or more substances are present. This is because the different components of the mixture cannot be seen.