RESPONDERS. 12/5/2011 Standards : 1 (Str of Atom) and O bjectives : 2 (Chem Bonds) a. Test for understanding – Std 1 – Structure of the Atom b. Be able to draw at least 1 Lewis Structure for a covalent molecule D O NOW : - PowerPoint PPT Presentation
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except: responders, blank paper (headed Std 1 Quiz Notes ), pencil 12/5/2011 Standards : 1 (Str of Atom) and Objectives : 2 (Chem Bonds) a. Test for understanding – Std 1 – Structure of the Atom b. Be able to draw at least 1 Lewis Structure for a covalent molecule DO NOW : Get responders, after paper pick-up, & stamping Clear desks of everything HOMEWORK : 1. ChemThink.com - Molecular Shapes Tutorial take careful notes (3 pts) Molecular Shapes Question Set (7 pts). (total 10 pts) Std 2 (due 12/8) 2. PRINT Polarity in Bonds vs Polarity in Molecules (1 pts) Std 2 3. PRINT MOLECULAR GEOMETRY, LEWIS STRUTURES AND VSEPR - lab for Wednesday (1 pts) Std 2 =========================================================== STAMPS : Journal 12/1 (Th) 1. Page 244 PP's 1-5 (Lewis Structures) (5 pts) Std 2 On-Line ChemThink.com - Covalent Bonding Tutorial and Questions should be completed before mid-night tonight. RESPONDERS
Transcript
except: responders, blank paper (headed Std 1 Quiz Notes), pencil
12/5/2011 Standards: 1 (Str of Atom) and Objectives: 2 (Chem Bonds)a. Test for understanding – Std 1 – Structure of the Atomb. Be able to draw at least 1 Lewis Structure for a covalent molecule DO NOW: Get responders, after paper pick-up, & stamping Clear desks of everything
HOMEWORK: 1. ChemThink.com - Molecular Shapes Tutorial take careful notes (3 pts) Molecular Shapes Question Set (7 pts). (total 10 pts) Std 2 (due 12/8) 2. PRINT Polarity in Bonds vs Polarity in Molecules (1 pts) Std 2 3. PRINT MOLECULAR GEOMETRY, LEWIS STRUTURES AND VSEPR -
lab for Wednesday (1 pts) Std 2===========================================================STAMPS: Journal 12/1 (Th) 1. Page 244 PP's 1-5 (Lewis Structures) (5 pts) Std 2On-Line ChemThink.com - Covalent Bonding Tutorial and Questions should be
completed before mid-night tonight.
RESPONDERS
formula
Lewis Structure
H H
OH2O
H2
O
Total
Unshared
bonding
Atoms Valence Electrons
A bonding pair of electrons =
Check 2 things to have a correct Lewis Structure1. Every atoms has 8 electrons except H (only needs 2)2. Total electrons in Lewis Structure = total of all valence electrons
from the individual atoms.
Lewis Structures For Covalent Molecules Std 2
12/6/2011 Standards: 2 (Chemical Bonds) Objectives:a. Std 1 Quiz (40 pts)b. Be able to draw Lewis Structures for covalent molecules (who is central
atom).c. Be able to use VSEPR to predict shapes (5) of molecles c. Be able to perform LAB - Molecular Geometry, Lewis Str & VSEPR.DO NOW: 1. Clear desks and floors - keep responders and blank paper for scratch 2. The Lewis Structures for these molecules:
Cl2 Br2 PCl3 3. Define VSEPR (what each letter means and what the theory states).HOMEWORK: NONE - watch vids on-line to help understand drawing Lewis Str.======================================================STAMPS: NONE
RESPONDERS
Moleculeformula
Start Lewis Strw layout of atoms
Put in bondingpairs to connectall atoms(redraw here)
Calculate total valence electronsand sub bondingelectrons
Check step1. all have 8 except H, Be, B2. TOTAL electrons correct
12/7/2011 Standards: 2 (Chemical Bonds) Objectives:a. Be able to draw Lewis Structures for covalent molecules.b. Be able to use VSEPR to predict shapes (5) of molecules c. Be able to perform LAB - Molecular Geometry, Lewis Str & VSEPR. DO NOW: 1. p. 255-257 30, 32, 34 HOMEWORK: 1. p. 255-257 PP's 30-38 (5 pts) Std 2 2. Read through lab at least once and be sure you understand the 3 reasons
for molecular shapes ========================================================STAMPS:
Journal 12/5 & 12/6 1. PRINT Polarity in Bonds vs Polarity in Molecules (1 pts) Std 2 2. PRINT MOLECULAR GEOMETRY, LEWIS STRUTURES
AND VSEPR – lab (1 pts) Std 2ANNOUNCEMENTS:Mr. Wigger & son Jacob will only perform on Friday night. Will give you preview today (end of period).
This is how we get more than one bond - WE ARE OUT OF ELECTRONS
2. put in bonding electrons
total left for the rest of the Lewis Structure
Not enough to go around N doesn't have 8
4. Start Sharing
N still doesn't have enough electrons
5. m
ore
shar
ing
1. basic layout
1. H has 2, C has 8, N has 8Total electrons = 8
Total valence electrons
Subtract bonding electrons
3. add in leftovers
Moleculeformula
1
Start Lewis Strlay out atoms
2
Put in bondingpairs to connectall atoms(redraw here)
3
Calculate total valence electronsand sub bondingelectrons
4
Check step1. all have 8 except H Be B 2 4 62. TOTAL electrons correct5
`
12/8/2011 Standards: 2 (Chemical Bonding) Objectives:a. Prep for tomorrow's lab - MOLECULAR GEOMETRY, LEWIS
STRUCTURES AND VSEPR - Zum (computer)b. Be able to identify all 5 shapes from the VSEPR theoryc. Be able to predict shape based on central atom having share or unshared DO NOW: 1. Draw Lewis Structures for BeBr2 SO2 CO2
Show columns 3-5HOMEWORK: 1. Memorize Ions Quiz 3 coming next Tuesday. Start studying.
16 ions will be on this quiz. 2. PRINT Lewis Structures and Molecular Geometry - Ball & Stick
Put in bondingpairs to connectall atoms(redraw here)
3
Calculate total valence electronsand sub bondingelectrons
4
Check step1. all have 8 except H Be B 2 4 62. TOTAL electrons correct5
As a Man thinketh, so is
he.By: Tim Allen
Lazy thoughts crystallize into habits of uncleanness and
dishonesty. This solidifies into circumstances of foulness and
begging.16:50
Molecular Shapes
1. Linear
Remember that all atoms want ____ valence electrons.8O O
N
2. Trigonal Planar
Molecular Shapes
3. Tetrahedral 4. Trigonal Pyramidal
5. Bent
does have unshared pairson central atom
does not have unshared pairson central atom
12/9/2011 Standards: 2 (Chemical Bonding)Objectives: (20 pts)a. LAB - Lewis Structures and Molecular Geometry - Zum -
Copy FORMULAS of all molecules before starting lab.DO NOW: 1. Read lab SILENTLY Pay special attention to #5HOMEWORK: 1. Ch 9.4 p. 262 49-52. DO NOT FOLLOW DIRECTIONS IN TEXT.
Draw Lewis Structure & show total valence electrons & shape as you will do in today's lab. 2. Lab - Lewis Str & Molecular Geo - Ball & Stick (Shapes) (1 pt) Std 2 3. Remember Memorize Ions 3 next Wed - All 13 ions and first 3 acids (15 points)============================================================STAMPS: NONE
