Big Idea 1. All matter is composed of atoms.

Memorization work required for this chapter.

Memorize the electromagnetic spectrum in terms of relative energy, frequency, and wavelength.

Section 6.1: Wavelengths and Frequencies of Light

o Calculate the wavelength of electromagnetic radiation given its frequency or its frequency given its wavelength.

o Order the common kinds of radiation in the electromagnetic spectrum according to their wavelengths or energy.

Section 6.2: Quantized Energy and Photons

o Explain what photons are and be able to calculate their energies given either their frequency or wavelength.

Section 6.3: Bohr Model of the Hydrogen Atom

o Explain how line spectra relate to the idea of quantized energy states of electrons in atoms.

Section 6.4: Wave Behavior of Matter

o Calculate the wavelength of a moving object.

o Explain how the uncertainty principle limits how precisely we can specify the position and the momentum of subatomic particles such as electrons.

Section 6.5: Quantum Mechanics and Orbitals

o Relate quantum numbers to the number and type of orbitals and recognize the different orbital shapes.

Section 6.6: Representation of Orbitals

o Interpret radial probability function graphs for atomic orbitals.

Section 6.7: Many-Electron Atoms

o Explain how and why the energies of the orbitals are different in a many electron atom from those in the hydrogen atom.

Section 6.8: Electron Configurations

o Draw an energy level diagram for the orbitals in a many electron atom and describe how electrons populate the orbitals in the ground state of an atom, using the Pauli exclusion principle and Hund’s rule.

Section 6.9 Electron Configurations and the Periodic Table

o Use the periodic table to write condensed electron configurations and determine the number of unpaired electrons in an atom.