Objectives Of Atomic Structure - Revised 2008

1. Trace the development of atomic theory and the structure of the atom from the Greeks to the present (Dalton, Thompson, Rutherford, Bohr, and charge cloud model).

• a) Memorize what the significant contribution to the atomic structure from Boyle, Stahl, Priestley, Lavoisier, Proust, Gay-Lussac, Avogadro
• b) Understand the four part of Dalton Atomic Theory, how we have updated his original theory, and the importance of his theory.
  
• c) Be able to calculate Law of Definite Proportion problems.
• d) Explain, using the experiment set-up and the results, how Thomson came up with the concept of electron (and the fact that their is only one type of electron). From his work, explain the atomic model, Plum pudding model of the atom.
  
• e) Memorize what the following scientist did: Millikian (oil drop expt, determine actual mass & charge of electron), Goldstein (discovered proton), and Chadwick (discovered neutron).
• f) Memorize the actual mass, charge and location of all three subatomic particles (i.e. electrons, protons, and neutrons).
• g) Explain, using the Gold leaf experiment set-up and the results, how Rutherford came up with the concept of nucleus (remember, there are 3 characteristics) and how the electrons move outside the nucleus. Explain Rutherford shortcomings.
  
• h) Explain Bohr's (planetary model of the atom) theory of the atom including distance electron from nucleus = energy in electron, how electrons move in atoms (ground state of atom, excited state of atom, electron in lower energy level, electron in higher energy level).
  
• Will leave charged cloud model (quantum mechanical model) of atom until next chapter/test.
  

2. Explain what light is in terms of DeBroglie, Planck (particle characteristics), and light characteristics.

3. Describe the electromagnetic spectrum in terms of wavelength and energy; memorize the infrared and ultraviolet region w.r.t. visible spectrum and memorize red is 700nm and violet is 400nm). [2.6]

4. Be able to calculate energy, wavelength and frequency using all appropriate equations and how the variable relate to each other (e.g. direct vs, indirect proportion).

5. Be able to explain the significant of a bright line spectra and what each line indicates (mean with respect to the atom).