1. SNIFC

3. Diet & Nutrition Calcium, Choline, Chromium, Copper, Fluoride, Iodine, Iron, Magnesium, Potassium, Sodium, vitamins Kidney stones, gallstones Water Cars Batteries – MP3 players, iPods, cell phones Electricity Jewelry Fool’s gold

5. What characteristics would you use to identify or classify different minerals? (3,800 minerals) 9 classifications/properties (physical & chemical properties)

6. Easy to observe Not always a clear way to identify

7. Streak: the color of its powder Colors of minerals may vary but streak does not

8. Luster: how much light is reflected from a mineral’s surface Metallic - Galena Glassy - TopazWaxy, greasy, or pearly - Talc Submetallic/dull - graphite Silky - MalachiteEarthy - Hematite

9. Density: how much mass there is in a given space D = m/v or water displacement

10. Hardness: determined by a scratch test A mineral can scratch any material softer than itself But can be scratched by any mineral that is harder Mohs hardness scale

12. Crystal system: the structure of how the mineral’s atoms form Ex: cubic, hexagonal, rhombic

13. Cleavage: when a mineral splits along a flat surface Ex: Mica

14. Fracture: when a mineral breaks apart in an irregular way

15. Some minerals are identified by special physical/chemical properties.

16. Person #1: describe rock to partner using 3-4 properties Switch

17. A. Usually not a clear identifier B. Does not break in a flat sheet C. Calcite’s powder is always white D. Fluorescent E. Breaks in flat sheets F. Shiny mineral G. Cubic shape H. Compares how it is scratched/scratches I. How much mass takes up a certain volume 1. Color 2. Streak 3. Luster 4. Density 5. Hardness 6. Crystal system 7. Cleavage 8. Fracture 9. Special properties Answers: 1. A 2. C 3. F 4. I 5. H 6. G 7. E 8. B 9. D