| A | B |
|---|
| hardness | how easily a mineral is scratched |
| luster | how light reflects from a mineral's surface |
| streak | the color of a mineral when it is a powdered |
| cleavage | minerals that break along smooth, flat surfaces |
| fracture | minerals that break with uneven rough or jagged surfaces |
| mineral | a naturally occurring inorganic solid with definite composition and orderly arrangement |
| magma | hot melted rock material |
| silicates | minerals that contain silicon and oxygen |
