Rachel is trying to explain to her students what a mineral is. What statement below is the best description of a mineral?
A. A mineral is a solid, liquid, or gas that has a definite composition and a crystal structure
B. A mineral is an inorganic solid that has a definite composition and has a crystal structure
C. A mineral is like a rock only it is made of inorganic substances
D. A mineral is a solid that has a crystal structure and a variable composition

Question

Rachel is trying to explain to her students what a mineral is. What statement below is the best description of a mineral?
A.		 A mineral is a solid, liquid, or gas that has a definite composition and a crystal structure
B.		 A mineral is an inorganic solid that has a definite composition and has a crystal structure
C.		 A mineral is like a rock only it is made of inorganic substances
D.		 A mineral is a solid that has a crystal structure and a variable composition

anonymous · Answer

Gases and liquids aren't considered minerals, only solids, so A can be ruled out.

I would say B.