| A | B |
|---|
| crystal | a solid that has atoms arranged in a repeating pattern |
| atom | the smallest piece of matter that can still be identified as that matter |
| igneous rock | rocks formed when melted rock cools and becomes solid |
| sedimentary rock | rock formed from small pieces of rocks and minerals that are cemented together |
| metamorphic rock | rock formed from rock that has been changed by high temperature |
| rock cycle | a series of actions that changes rocks from one type of rock to another |
| luster | how the surface of a mineral reflects light |
| metallic | this is a shiny type of luster |
| non-metallic | this is a dull type of luster |
| Mohs Scale of Hardness | a scale used to determine the hardness of a mineral |
| crystal shape | the shape of a crystal |
| hardness | the measure of how easily a mineral is scratched |
| streak | the color of powder a mineral leaves behind on a streak plate |
| cleavage | the way a mineral breaks |
| color | the color of a mineral |
