Geoscience 020 week 2 notes
Geoscience 020 week 2 notes Geoscience 20
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This 1 page Class Notes was uploaded by Megan Messick on Tuesday February 2, 2016. The Class Notes belongs to Geoscience 20 at Pennsylvania State University taught by Professor Bush in Spring 2016. Since its upload, it has received 24 views. For similar materials see Geoscience in Science at Pennsylvania State University.
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Date Created: 02/02/16
Chapter 2 An ion is an atom that has either a positive or negative charge A cation is an atom that has a positive charge due to the loss of electrons An anion is an atom that has a negative charge due to the gain of electrons A Ionic Bond is when atoms are attracted due to opposite electrical charges A Covalent Bond happens when atoms share electrons A mineral is a “naturally occurring, inorganic, solid element or compound with a definite composition and a regular crystal structure” A compound is different atoms bonded together Physical Properties of Minerals 1. Color 2. Streak 3. Hardness 4. Crystal forms 5. Cleavage 6. Fracture 7. Luster 8. Effervescence 9. Fluorescence 10. Specific gravity Types of Minerals Silicates- contain silicon and oxygen Silica tetrahedron Olivine Chain Silicates Pyroxenes Amphiboles Sheet Silicates Framework Silicates
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