Relating to Describing Concerning Visualized by Bulit upon by
Instructional
Key Questions: 1. What has caused atomic theory to change over time? 2. What charge does a proton have? 3. What is the purpose of the neutron in the nucleus of an atom? 4. Where are the electrons located in an atom? 5. What is the “modern model” of atomic structure?
Strategies
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• The Unit Organizer •
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Atomic Theory & Structure
NAME DATE
•10Expanded Unit Map
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The history of the Atom and its structure
Modern Model
Atomic Theory
Unit Questions • and Reflections
Started with *Democritus (Un-cuttable) *Dalton 1803 (Combining Elements) *Thomson (plumpudding) *Rutherford (goldfoil) *Bohr (orbits like planets) *Modern model (electron clouds & Proton and Neutron in Nucleus)
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Protons
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Subatomic particle with a positive charge Located in the nucleus of Atom Protons = atomic# Mass of a proton = mass of a Neutron
Electrons Neutrons
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Subatomic particle No electrical charge Located in the nucleus Mass of a Neutron = Mass of a Proton
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Small with negative electrical Located in the clouds outside of the Nucleus Electrons = Atomic # 1/2000th of a Proton
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Electron clouds instead of levels or clouds Location of electron is not known exactly Schrodinger