Unit 2: Atomic Model
draft—fall 2011
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
2.10
2.11
2.12
2.13
2.14
target
Define, apply, and distinguish among the following terms
atom
mass number
valence electrons
nucleus
isotopes
ion
protons
isotopic notation
cation
neutrons
orbital
anion
electrons
mole
energy level
atomic number
avogadro’s number
ground state
atomic mass
molar mass
excited state
Describe the atom, its parts (protons, neutrons, and electrons) and location of
these parts and their characteristics
Draw and recognize scientists’ models of the atom through time – from Greek
philosophers to modern day.
Write element symbols in isotopic notation
Distinguish between atoms and ions
Figure out the atomic number, mass number, and number of electrons in an
atom or ion.
Predict the particles and electromagnetic waves produced by different types of
radioactive decay and write equations for nuclear decays.
Describe the characteristics of alpha, beta, and gamma radiation and their
relative energies
Describe the mole as a counting unit and state “how much” a mole is - expressed
in scientific notation (Avogadro’s number)
Use the periodic table to determine molar mass.
Perform the following calculations (using dimensional analysis and considering sig
figs) with the mole
 grams to moles
 moles to grams
 moles to atoms (particles)
 atoms (particles) to moles
 grams to moles to atoms (particles)
 atoms (particles) to moles to grams
Explain what happens when electrons absorb/release different amounts of
energy
a. Relate the change in energy to the color of light and the electromagnetic
spectrum (Ex: The greater the energy released the higher the energy of light
emitted.)
b. Distinguish between ground state and excited state
c. Represent the process visually
Describe Bohr’s model and how it was useful in our present understanding of the
atom along with its short-comings (electrons don’t travel in defined paths).
Explain the basics of the Quantum model of the atom (current view of the atom)
and how electrons behave
a. describe what an orbital is.
b. relate the energy level number to the types of orbitals
c. relate the types of orbitals to the number of electrons allowed in each orbital
reading
homework
79-89
# 62 on p. 109
of text
87-88
87-88
101
101
101 -104
90-94
92
91
91
91
95
95
U1 #3
<li>atoms, protons/neutrons/electrons: pages <b>79-89</b>
<li>formulas of ionic compounds (salts): pages <b>176-180</b>
<li>balancing reactions: pages <b>267-274</b>
<li>reaction types: pages <b>275-284</b>
<li>molar masses: pages <b>237-240</b>
<li>mole-to-mass and mass-to-mole conversions: pages <b>100102</b>
<li>stoichiometry: pages <b>302-307</b>
<li>limiting reactant, yield: pages <b>312-318</b>
<li>Avogadro's number: pages <b>103-104, 224-233</b>
<li>atomic models, spectra, <b>pp. 90-94</b>
<li>electron configuration, <b>pp. 96-99</b>
<li>periodic table tour, <b>pp. 115-131</b>
<li>periodic trends, <b>pp. 132-141</b>