things are mixed together, it's a physical change not a chemical one.
in a solution things are mixed HOMOGENEOUSLY, which means the same throughout.
brownies are red
it t is a mixture of 2 or more thing when one completely dissolves in the other
Homogeneous Mixture
it is somethiing.
A solution is homogeneous, because it is the same in all parts, whereas something heterogeneous would have different consistency in some parts of it, like lumpiness for example, or a mixture thay...