Which substance is found in nature, is inorganic, solid, and has a definite chemical composition and structure?

Which substance is found in nature, is inorganic, solid, and has a definite chemical composition and structure?

• A. Mineral
• B. Rock
• C. Element
• D. Compound

Answer: (A)

Minerals are naturally occurring, inorganic solids with a definite chemical composition and a crystalline structure. This combination of properties means they form in nature, are not derived from living processes, exist as solid materials, and have a specific formula arranged in a repeating lattice. Rocks are aggregates made up of minerals, so they don’t have a single fixed composition or crystal structure. Elements are pure substances, but the term mineral specifically points to that natural, crystalline solid with a defined formula, which isn’t guaranteed for every pure element in the natural world. Compounds are formed from two or more elements, and while many minerals are compounds, the defining feature here is the natural, inorganic solid with a crystalline arrangement.

Minerals are naturally occurring, inorganic solids with a definite chemical composition and a crystalline structure. This combination of properties means they form in nature, are not derived from living processes, exist as solid materials, and have a specific formula arranged in a repeating lattice. Rocks are aggregates made up of minerals, so they don’t have a single fixed composition or crystal structure. Elements are pure substances, but the term mineral specifically points to that natural, crystalline solid with a defined formula, which isn’t guaranteed for every pure element in the natural world. Compounds are formed from two or more elements, and while many minerals are compounds, the defining feature here is the natural, inorganic solid with a crystalline arrangement.