When particles of two or more substances are distributed evenly among each other, it forms a homogeneous mixture.

Here's why:

* Homogeneous means "uniform throughout." This means the mixture has the same composition and appearance in every part.

* Mixture means that the substances are combined but not chemically bonded. They retain their individual properties.

Examples of homogeneous mixtures:

* Saltwater (salt and water)

* Air (nitrogen, oxygen, and other gases)

* Sugar dissolved in coffee

* Brass (copper and zinc)

Let me know if you have any other questions!