Final answer:
A homogeneous mixture, often called a solution, is a material with uniform properties throughout. Solutions and compounds are examples of homogeneous mixtures. Compounds specifically adhere to the law of constant composition.
Step-by-step explanation:
A homogeneous mixture is a chemically combined material that has consistent properties throughout the sample. When we refer to a homogeneous mixture in chemistry, we are often discussing a solution, which is a combination of substances with a composition that is uniform throughout. For example, saltwater is a homogeneous mixture because the solution has the same concentration of salt throughout.
A specific type of homogeneous mixture is a compound, which is a substance composed of two or more different elements joined by chemical bonds in a fixed ratio. Chemistry recognizes two types of substances which are elements and compounds. By the law of constant composition (also called the law of definite proportions), all samples of a pure compound contain the same elements in the same proportions throughout.