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Earths Surface Ch 2

Vocabulary from Ch. 2: Minerals

QuestionAnswer
mineral a substance that forms in nature, is a solid, has a definite chemical makeup, and has a crystal structure.
element a substance that contains only one type of atom.
crystal a solid in which the atoms are arranged in an orderly, repeating three-dimensional pattern.
streak the color of the powder left behind when the mineral is scraped across a surface.
luster the way in which light reflects from a mineral's surface.
cleavage the tendency of a mineral to break along flat surfaces.
fracture the tendency of a mineral to break into irregular pieces.
density the amount of mass in a given volume of a substance.
hardness a mineral's resistance to being scratched.
magma molten rock inside Earth.
lava molten rock that has reached Earth's surface.
ores rocks that contain enough of a mineral to be mined for profit.
Created by: misskazantzis
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