Unit Objectives for Chemistry

Unit II. Atomic Model & The Periodic Table

Chapter 5- Atomic Structure

1.      Discuss the origin of the atomic theory- Democritus, John Dalton

a.       Daltonís Law of Multiple Proportions

2.      Describe the composition of the atom & historical discovery of the subatomic particles.

3.      Describe the general structure of the atom.

4.      Correlate atomic number and # of protons in an atom

5.      Define mass number

6.      Describe an isotope in terms of neutrons and protons/atomic number

7.      Define atomic mass as a function of the mass numbers of known isotopes and % occurrences.

Chapter 13- Electrons in Atoms

1.      Identify and describe the history of the Atomic Models

a.       Historical models and quantum mechanical model

2.      Identify the various atomic orbitals and define the 4 quantum numbers for electrons

3.   Define electron configuration and relate to fundamental principles:

a.      Aufbau Principle

b.      Pauli Exclusion Principle

c.       Hundís Rule

d.      Identify elemental electron configurations

e.       Identify some exceptions to electron configurations

4.   Relate Light and Atomic Spectra as a function of electron configurations

         5.   Define Planckís Quantum Theory

         6.   Describe Photoelectric Effect as related to electron energies

7.      Explain energies associated with the following series in terms of atomic spectra

a.       Lyman, Balmer, & Paschen Series.

8.      Describe Heisenbergís uncertainty principle in relation to position and velocity of an object