1. Minerals

2. What is a Mineral? A mineral is inorganic. Minerals are naturally occurring. Minerals are solids. Minerals have a crystal structure. Minerals have a definite chemical composition.

3. How do we Identify Minerals? Color Streak- the color of its powder. Luster- how it reflects light. Density- mass/ volume Hardness- Mohs hardness scale- ranks 10 minerals from softest to hardest. Hardness is determined by a scratch test. Crystal structure Cleavage and fracture- the way a mineral breaks apart.

4. How do Minerals Form? Hot magma cooling inside the Earth. Lava hardening outside, on the surface of the Earth. Elements and compounds dissolving in water (solution). Evaporation