05/09/12 - dr. block aim: how do the electrons impact our world? skills addressed/objective: -...
TRANSCRIPT
05/09/12 - Dr. Block
AIM: How do the electrons impact our world?
Skills Addressed/Objective: - Compose Lewis Dot Diagrams for Ions- Compose Basic Ionic Formulas- Predict Nobel Gas electron configuration for the elements in an Ionic Compound
Do Now:1. Write the Lewis Dot Diagram for K, Mg, P and S2. Write the Electron Configuration for 2 Nobel Gasses
HW: #4-2: Finish the POGIL “Chemical Formulas and Names of Ionic
Compounds”
05/11 - Quiz #4-2 (Lewis Structures, Ionic Formulas, Energy Relationship to bonding & Nobel Gas Electron Configurations of Ions)
Revised on 05/07/12
For the weeks of 05/07 - 5/1105/07 - Post Unit Exam Review, Identify Periodic Trends as they relate to Simple Ionic Formulas & Predict Ionic Formulas05/08 - No Class05/09 - Ionic Formulas, Nobel e-Config & Lewis Structures 05/10 - No Class05/11 - Quiz & Lab - Ionic Bonding
Announcements05/11 - Quiz #4-2 (Lewis Structures, Ionic Formulas, Energy to bonding & Nobel Gas Electron Configurations of Ions)
Today's Agenda- Go over DN ………..........…...................................…... 10 min- Note the Ionic Tendencies for Metals and Non
Metals...................................................................… 10 min- Compose the Electron Configuration of the
Metal and Non Metal Ions ..................................… 15 min- Compose Lewis Dot Diagrams for Metal and Non
Metal Ions ……….................................................… 10 min- POGIL (Chemical Formulas and Their Name of
Ionic Compounds ……............................................. 40 min- Closure …………….........................……………………. Balance
Do Now Solution1. Write the Lewis Dot Diagram for K, Mg, P and S
2. Write the Electron Configuration for 2 Nobel Gasses
Metals vs. Non Metals
Metals like to lose electrons and become cations. This will alter their electron configuration.
Metal e-Config What is the charge on this cation?
Oxidation Number
Na 2-8-1 +1 1+
Li 2-1
Be 2-2
Ca 2-8-8-2
K 2-8-8-1
Nonmetals (other than the Nobel Gasses) like to gain electrons and become anions. This will alter their electron configuration.
Metal e-Config What is the charge on this cation?
Oxidation Number
F 2-7 -1 1-
O 2-6
P 2-8-5
Cl 2-8-7
Ar 2-8-8
- are the result of a complete transfer of electrons from a metal (cation) to a nonmetal (anion).
- form compounds that take the shape of a crystal lattice.
EX: NaCl
Ion
ic B
on
ds
http://web.jjay.cuny.edu/~acarpi/NSC/5-bonds.htm
Sodium Chloride
Magnesium SulfidePotassium IodideRubidium Chloride
Lithium Fluoride Lithium Bromide
Element
e-Config e-config of ion The Nobel gas it now looks like.
Na 2-8-1 2-8 Ne
O
Ca
Cl
P
When Metals and Nonmetals gain or lose electrons, their electron configuration is altered and they now look like a Nobel Gas.
When Metals and Nonmetals ionize, their Lewis Dot Structure is altered.
Element Dot structure Dot structure of ion Oxidation Number
NaNa Na +1
OO O
Br
Ca
N
Fill in the missing information for the following Ionic Compounds
Formula Name Dot Diagram
NaCl
Potassium Cloride
CaBr2
Iron (III) Iodide
Sodium Nitrate
Mg(MnO4)2
Calcium Hydroxide
Change this to be an activity for composing Lewis Dot Diagrams for Ions
POGIL - Chemical FOrmulas and Names of Ionic Compounds
Portions from the exercise are on the next two slides
Closure: Pass it on
Ionic bonds __________________
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