My flash cards for big brain
1
Q
Mineral
A
A substance that is formed in the earth. It is inorganic. Has a definite chemical composition and has a crystal structure.
2
Q
Streak
A
The color of minerals powder when it’s rubbed against a porcelain plate.
3
Q
Luster
A
The way the surface of a mineral reflects light.
4
Q
Inorganic
A
Not derived by living matter.
5
Q
Crystal
A
A repeating formation that follows a pattern.
6
Q
Hardness
A
Is the ability of a mineral to scratch or be scratched by another mineral.
7
Q
Cleavage
A
The tendency of crystals and minerals to break along definite
planes resulting in smooth surfaces.
8
Q
Fracture
A
The appearance of a freshly broken surface on a mineral that has a rough or irregular surface.
9
Q
Most hardness scale
A
A hardness scale is used to classify minerals.
