Unit-2-electrons-in-atoms-and-quantum-mechanics-notes-2011 by stariya


									Unit 2: Electrons in Atoms and Quantum Mechanics

Big Idea: Quantum theory provides a foundation for the atomic model and the
understanding of electron behavior and arrangement.

Core Concepts and Generaliztions:
Electrons are arranged in energy levels with sublevels that specify particular
shapes and geometry.

Evidence for the movement of electrons between different energy levels can be
observed through absorption and emission spectra.


Absorbance spectrum       Atomic motion            Energy level        Kernel
Bright line spectrum      Electromagnetic          Emission spectra    Orbital
Electromagnetic radiation Electromagnetic          Excited state       Sublevel
Electromagnetic spectra   Electron                 Ground state        Quantum
Quantum numbers           Release of energy        Wavelength          Hertz
Valence electrons         Wave amplitude           Quantum energy      photons
Probability               Aufbau principle         Hund’s rule         Frequency
Heisenberg uncertainty

To Do:

      Read Chapter 5
C2.4c I can explain why an atom can absorb only certain wavelengths of light.

       C2.4a I can describe energy changes in flame tests of common elements in terms of the
(characteristic) electron transitions.
       C2.4b I can contrast the mechanism of energy changes and the appearance of absorption
and emission spectra.
       C4.8h I can describe the shape and orientation of s and p orbitals.
       C4.8i I can describe the fact that the electron location cannot be exactly determined at
any given time.
Tier I: What is a photon?
        What is a quanta?
        What is an energy level?
        What is an atomic orbital?
        What does the term “emission of light” mean?
        What is a flame test?
        What does “frequency of light” mean?
        What does “wavelength of light” mean?
        What is an atomic line spectra?
        What is the quantum mechanical model of the atom?
        What are quantum numbers?
        Who is Niels Bohr and what is his role in understanding the structure of
        Who is Werner Heisenberg and what is his role in understanding the
structure of atoms?
        What is Heisenberg’s uncertainty principle?
        What is a ground state?
        What is an excited state?
        What is an atomic emission spectra?
        What is a quantum leap?
C2.4d I can compare various wavelengths of light (visible and nonvisible) in terms of
frequency and relative energy.

Tier I: What is frequency of light?
        What is wavelength of light?
        What is the electromagnetic spectrum?
        How are frequency and wavelength of light related to each other?
        How is frequency of electromagnetic light related to energy?
        How does the speed of light compare to other forms of electromagnetic

C4.8e I can write the complete electron configuration of elements in the first four rows
of the periodic table.
       C4.8f I can write kernel structures for main group elements.
Tier I: What   is   electron configuration notation?
        What   is   a kernel structure?
        What   is   the aufbau principle?
        What   is   Hund’s Rule?
        What   is   the Pauli exclusion principle?
        What   is   orbital notation?

To top