Answers appear at the end of the quiz. The atoms in minerals are arranged in orderly internal patterns. A mineral's density is its mass divided by its volume. Low density minerals tend to be more common deeper in the earth than high density minerals. The hardness of a mineral refers to the ease with which it dissolves in acids.
Minerals can be either chemical elements or chemical compounds.
Circle the letter of the word or phrase that best completes the sentence or answers the question. A mineral must be A. naturally occurring B. inorganic C. a crystalline solid. D. all of these 7. The streak of a mineral refers to A. the flash its makes when thrown through the air. B. the color of its powder.