# Objectives For Atomic Structure - Revised 2023-2024

ApchemWiki | RecentChanges | Preferences

Essential Questions (EQ2): Are there any basic particles ?

The student should be able to:

1) Trace the development of atomic theory and the structure of the atom from the Greeks (Democritus) to the present (Dalton, Thompson, Rutherford, Bohr and Schrodinger).
1a) Memorize Democritus and his atomos thought concept (no experiments).
1b) Dalton Atomic Theory
1bi) Understand the four part of Dalton Atomic Theory, how we have updated his original theory, and the importance of his theory.
1bii) Be able to explain how Dalton (including his atomic theory name, Solid sphere model) expanded the Law of Conversation of Mass (to total number & each type of atom) using atom info) and the definition of Law of Definite Proportion problems.

2) Be able to calculate a Law of Definite Proportion problem (will just be multiple choice/fill-in blank (no work needs to be shown).

3) 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 and be able to draw the Plum pudding model of the atom.

4) 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. Be able to name and draw his atomic model.

5) Explain and draw 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).

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

7) 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 ans ROYGBIV.

8) Be able to "calculate qualitatively" (increasing/decreasing/constantly) energy, wavelength and frequency using your understanding of directly and indirectly proportions.

9) Be able to explain Schrodinger and Quantum Model (also called Charged Cloud Model) with respect to definition of an orbitals and letter designation, s,p,d,f (actually subenergy not orbital but don't need to know it).

10) Be able to name, draw and explain all the different atomic model/scientists in the Brief History of the Atom handout.

ApchemWiki | RecentChanges | Preferences