Final answer:
Minerals are identified by being solid, naturally occurring, and inorganic, but they do not have a changing chemical composition; they have a definite one.
Step-by-step explanation:
The qualities minerals possess include being solid, naturally occurring, and inorganic. The one quality from the list that minerals do not have is a changing chemical composition. Minerals actually have a definite chemical composition, meaning they can be defined by a specific chemical formula, though some variation can occur when one element can substitute for another within a mineral's structure.