Sci. 6 Ch.2 Vocabulary

11 terms by DiUbaldo 

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Cleavage

- the tendency of a mineral to break along flat surfaces.

Crystal

- a solid substance in which the atoms are arranged in an orderly, repeating, three-dimensional pattern.

Density

- the amount of matter in a given space.

Element

- a substance that contains only one type of atom.

Fracture

- the tendency of a mineral to break along curved or irregular surfaces.

Hardness

- the resistance of a mineral to being scratched.

Luster

- the way the surface of a mineral reflects light.

Mineral

- a substance that forms in nature, has a definite chemical makeup, and has a crystal structure.

Streak

- the color of powder left behind when a mineral is scraped across a surface.

Streak Plate

- a tile of unglazed porcelain, used as a tool by geologists to identify minerals by their streak.

Mohs Scale

- the scale used to measure hardness

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