Download ATOMIC STRUCTURE

Warm Up….complete on the top third of page 9 in your notebook
1. Calculate the number of each subatomic particle for the following elements:
Yttrium (Y element 39)
Iridium (Ir element 77)
Silver (Ag element 47)
2. Review your venn diagram on page 3. Add additional information based on
our lesson last class period.
Homework:
Complete w/s 35%
Date
Session
#
9/9-10
4
Activity
Page
#
Bohr Model & Lewis Dot Practice
9
Bohr Model & Lewis Dot Diagram Rules
10
Y
Ir
Ag
8.P.1 Understand the properties of matter and
changes that occur when matter interacts in an
open and closed container.
8.P.1.1 Classify matter as elements, compounds,
or mixtures based on how the atoms are packed
together in arrangements.
TLW calculate Bohr Model & Lewis Dot model of
atomic structure by reading and annotating
“rules”, practicing on white boards and
completing review w/s.
Bringing it all together…
For example, OXYGEN is an element on the
periodic table.
It is made of only one type of atom
Actual Oxygen Atom
Oxygen on the Periodic Table
p8
KING KONG
CHEMISTRY
Atomic Number =
Protons =
Electrons
Mass Atomic Number =
Neutrons
Quick Quiz!!!
The periodic
table has ALL
the answers
Quiz
Powerschool passcode A-Day: FE5QA9F
P 10
How are subatomic particles
arranged?
• Bohr Model of the atom:
All of the
protons and
the neutrons
The 3rd ring
can hold up
to 8 e-
10P
11N
The 1st ring can
hold up to 2 eThe 2nd ring can
hold up to 8 e-
***once a ring is full, it will not give up any electrons in the full ring
Valence electrons determine:
P 10
•how an atom bonds with other atoms (or if it will
bond at all).
•atom’s reactivity (how easily it bonds with other
elements.)
•Atoms with a complete set of valence electrons are
stable. They don’t bond with other atoms: don’t
gain/lose electrons, don’t share electrons.
Word origin/stem
late Middle English: from late Latin valentia ‘power, competence,’ from valere ‘be well or strong.’
P9
Draw Bohr models (atomic models)
for
As a class:
• B (Boron, element 5)
• Na (Sodium, element 1)
On your own:
• O (Oxygen, element 8)
• Li (Lithium, element 3)
Lewis Dot Rules..read and annotate.
(mark important text, mark confusing text)
Lewis Dot Structures
The behavior of an atom is determined by the VALENCE
ELECTRONS…so wouldn’t it be easier to just draw those??
(because the others are in full rings and aren’t going anywhere)
Write the symbol for the element
Calculate the number of valence electrons (Use dots to represent the electrons.)
Place electron “dots” around the symbol, starting on the left and moving
clockwise.
Begin by placing only one electron dot per side of the element symbol.
More than 4 valence electrons? Add the second dot to each side (clockwise)
Max of two electron dots per side
Hydrogen
Helium
Lithium
Berylliu
m
Boron
Carbon
Nitrogen
Oxygen
Fluorine
Neon
Sodium
Magnesi
um
Aluminum
Silicon
Phosphor
us
Sulfur
Chlorine
Argon