| A | B |
|---|
| mineral | nonliving solid matter from the earth |
| crystal | a structure that shows the regular arrangement and order of the particles in a mineral |
| luster | amount of shine on the surface of a crystal |
| hardness | depends on the strength of the forces holding the particles together |
| cleavage | the way a crystal splits into pieces with flat surfaces |
| electron microscope | uses electrons to make things look thousands of times bigger |
| gemstone | a mineral that is very valuable |
| Mohs scale | used to list minerals in order of increasing hardness |
| salt | pieces are shaped like cubes |
| color | a mineral property that depends on what substances form the crystal |
