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Do Now I want you to think about the following prompts for two minutes. • What was your favorite gift of the holiday season? Why was this your favorite? Did you get anything that you already have? Did you get anything that was just an upgrade of something you already have? • What brand cell phone do you have? How often do you get a new phone? What does your phone cost? What makes your cell phone work? Do Now (continued) Now, in your notebook, write continuously for 3 minutes about the same prompts, answering the following questions. • What gifts did you get for Christmas / Hanukkah / Kwanzaa? What was your favorite gift of the holiday season? Why was this your favorite? Did you get anything that you already have? Did you get anything that was just an upgrade of something you already have? What did these gifts cost? What are these gifts made of? Where were they made? • What brand cell phone do you have? How often do you get a new phone? What does your phone cost? What makes your cell phone work? What your phone really costs! https://www.youtube.com/watch?v=aF-sJgcoY20 https://www.youtube.com/watch?v=e-qxbdnD1Bs https://www.youtube.com/watch?v=p9mV99gC37Q https://www.youtube.com/watch?v=U6L7hAx7NaM https://www.youtube.com/watch?v=USodnCMC6rE https://www.youtube.com/watch?v=TbI_ZArJ22U What Does this have to do with Earth Science??? Or Me??? Rocks & Minerals NOTES Pages 1 - 3 Key Concept #1 What is a mineral? It is a naturally occurring substance which has a inorganic definite chemical composition What would be the opposite of this? man-made organic random composition ESRT Mineral Chart Click Here On to the next Concept Key Concept #2 What causes minerals to have different physical properties? their internal arrangement of atoms Key Concept #2 Give an example of two minerals which have the same chemical composition but different physical properties Click Here On to the next Concept Key Concept #3 The Main Physical Properties Used to Identify Minerals Color a poor indicator minerals can be multiple colors many minerals are the same color Key Concept #3 The Main Physical Properties Used to Identify Minerals Streak themore powder reliable formthan of a color mineral Key Concept #3 The Main Physical Properties Used to Identify Minerals Luster how light reflects off a mineral metallic non-metallic looks like a metal looks earthy, waxy, greasy or brilliant Key Concept #3 The Main Physical Properties Used to Identify Minerals Cleavage the mineral breaks in a predictable pattern because of its arrangement of atoms Key Concept #3 The Main Physical Properties Used to Identify Minerals Fracture the mineral breaks randomly Key Concept #3 The Main Physical Properties Used to Identify Minerals Hardness resistance to being scratched It is NOT the same as breaking! For example: You can break glass easily with steel. However, steel will not scratch glass. Key Concept #3 The Main Physical Properties Used to Identify Minerals Hardness MOH’S SCALE OF HARDNESS Hardness Mineral Hardness Mineral 1 (softest) TALC 6 ORTHOCLASE 2 GYPSUM CALCITE FLUORITE 7 QUARTZ TOPAZ CORUNDUM APATITE 10 (hardest) 3 4 5 8 9 DIAMOND Key Concept #4 Minerals have a definite chemical composition. What two elements, by mass, make up the greatest percentage of the Earth’s crust? oxygen silicon Key Concept #4 Minerals have a definite chemical composition. These two elements combine to form compounds called silicates (SiO4) Key Concept #4 Minerals have a definite chemical composition. They combine in a specific structure called a: silicon-oxygen tetrahedra