Chemistry 121, Week 1 Notes
Chemistry 121, Week 1 Notes 121
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This 1 page Class Notes was uploaded by Brigette Honaker on Friday October 14, 2016. The Class Notes belongs to 121 at University of North Dakota taught by Dr. David Pierce in Fall 2016. Since its upload, it has received 5 views. For similar materials see General Chemistry I in Chemistry at University of North Dakota.
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Date Created: 10/14/16
Week One Wednesday, September 7, 2016 1:06 PM August 26th, 2016 Periodic Table (1.2) Summarizes characteristics of elements and the relationships between them. Orders the elements Modern periodic table started by Mendeleev in 1869. o Theorized where undiscovered elements should be Different Groups (1.3) Nonmetals o 8A/18: Noble gas (do not react) o 7A/17: Halogens (very reactive) o Most nonmetals are gas o Non conductive o Solids in the group are brittle o Prefer to gain electrons Metals o Everything else o 1A: alkali metals Very reactive o 2A: alkaline earth metals Reactive, but not as reactive as 1A Semimetals o Sit on the boundary between metals and nonmetals o Behave uniquely
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