Inorganic Chemistry - Atomic Structure

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Inorganic Chemistry - Atomic Structure. Biology 2121 Chapter 2. Introduction. (1). Cells are the basic units of living organisms Atoms ----- elements --- compounds (molecules) Matter (2). Elements 116 total (92 naturally occuring ) 96% of body (C,O,H,N) 20 trace elements - PowerPoint PPT Presentation

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<ul><li><p>Inorganic Chemistry - Atomic Structure Biology 2121Chapter 2</p></li><li><p>Introduction(1). Cells are the basic units of living organismsAtoms ----- elements --- compounds (molecules)Matter</p><p>(2). Elements 116 total (92 naturally occuring)96% of body (C,O,H,N) 20 trace elements (3). Inorganic vs Organic Chemistry </p></li><li><p>Atomic Structure (1). What are atoms made of?Nucleus (protons and neutrons)Energy levels (electrons)</p><p>(2). PropertiesNeutrons (0, 1 amu)Proton (+1, 1 amu)Electron (-1, 1/2000 amu)Marieb link </p></li><li><p>Elements and the Periodic Chart(1). Metals and Nonmetals </p><p>(2). Atomic NumberProtons </p><p>(3) Mass Number Protons + electronsMass of the atom!</p></li><li><p>Elements and the Periodic Chart </p></li><li><p>Average Atomic Mass and IsotopesWhat are isotopes? Same type of atoms with differing numbers of neutrons.Average of all isotopes Average atomic mass numberNot all isotopes equal amounts</p></li><li><p>Valance Electrons and Planetary Models (1). Valance electrons Outer shell electronsInvolved in bonding </p><p>(2). Drawing Planetary Models of atoms Periodic chart (appendix C)</p></li><li><p>Valence Shells </p></li><li><p>Why are valence electrons important?Valence electrons are involved in bonding</p><p>Electrons Transferred from one atom to anotherShared between atoms </p></li></ul>