1 / 20

Modern Atomic Theory

Modern Atomic Theory. Section 4.3. Review – Atom Guesser Game. Objectives. Describe the atom as having a dense, positive nucleus surrounded by a cloud of negative electrons. Describe how the valence electron configuration determines how atoms interact and may bond. . Can I Do This???.

chung
Download Presentation

Modern Atomic Theory

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Modern Atomic Theory Section 4.3

  2. Review – Atom Guesser Game

  3. Objectives Describe the atom as having a dense, positive nucleus surrounded by a cloud of negative electrons. Describe how the valence electron configuration determines how atoms interact and may bond.

  4. Can I Do This??? • I can construct a visual model or diagram of an atom and correctly label each component. • I can understand the valence electron configuration determines how atoms interact.

  5. The History of the Atom Lead in to Bohr

  6. Using Bohr Models Danish scientist Niels Bohr (1885-1962) believed electrons existed in energy levels.

  7. Using Bohr Models Within the seven principle energy levels electrons occupy certain spaces called orbitals. Each level contains a number of orbitals. Each orbital holds two electrons. Don’t Freak Out Warning

  8. Energy Levels, Orbitals, and Electrons 1 2 4 8 9 18 32 16 32 16 32 16 16 ?

  9. Energy Levels, Orbitals, and Electrons • The number of electrons in a neutral atom is the same as the number of protons. Oxygen - atomic # is 8 (8 protons, 8 electrons)

  10. Brain Break DEMO!!!

  11. Closure and Summary Summary Describe how the electrons of a nitrogen atom would fill the energy levels of the atom. Please write in complete sentences!!!

  12. Can I Do This??? • I can construct a visual model or diagram of an atom and correctly label each component. • I can understand the valence electron configuration determines how atoms interact.

  13. Describe the Electron Configuration • How many electrons fill the first energy level? • How many electrons fill the second energy level?

  14. Energy Levels, Orbitals, and Electrons • Magnesium - atomic # is 12 ( ____ protons & ____ electrons) 12 12

  15. Energy Levels, Orbitals, and Electrons • Phosphorus - atomic # is ______ ( _____ protons & _____ electrons) 15 15 15

  16. Describe the Electron Configuration • How many electrons are in the following atoms? • Argon • Bromine • Krypton • Nitrogen • How would the electrons fill the shells of these atoms? 1stLevel - 2ndLevel- 3rdLevel- 1st Level - 2nd Level- 3rd Level- 1st Level - 2nd Level- 3rd Level- 1st Level - 2nd Level- 3rd Level-

  17. Energy Levels Electrons can move between energy levels. When electrons gain or lose energy they move between energy levels. When electrons move down energy levels, they give off energy (in the form of light) we can see. Electrons move with so much energy, scientists cannot predict their locations. HOW?

  18. Do Electrons Move???

  19. Closure and Summary Summary What are you thankful for? Please write in complete sentences!!!

  20. Brain Break DEMO!!!

More Related