Catalyst 11/28/11
LAST CHANCE TO SUBMIT ELECTRON
CONFIGURATION WORK FROM LAST TUESDAY. (Place
in homework bin during FIRST 7 minutes of class.)
1. Write the electron configuration for Manganese
and Zinc using electron configuration notation
and noble gas notation.
2. Draw the Bohr model of a Fluorine atom.
3. Blast from the past: An element is a poor
conductor of heat and electricity. Which
element could it be?
A. Flourine B. Nickel C. Scandium D. Zirconium
1.
2.
3.
4.
5.
6.
7.
8.
9.
Agenda
Catalyst (7 minutes)
Announcements (1 minute)
Verbal Drill (2 minutes)
Lab Report Data and Calculations Section
(For Periods 5 and 10)
Electron Config Issues (2 minutes)
Valence Electrons/Lewis Dot Structure Lesson
(10 minutes)
Class Practice (20 minutes)
*Honors Class: Quantum Numbers
Lesson/Material for Exam (5 minutes during
Class Practice)
Exit Slip (5 minutes)
Announcements
• Unit#4 Test TOMORROW, Tuesday,
11/29/11 (STUDY YOUR NOTES
INCLUDING QUANTUM NUMBERS,
ELECTRON CONFIGURATION, AND BOHR
MODEL)
• Tutoring available after school.
• Reminder: work on the data and
calculations section for your lab report
(Due THURSDAY)
Homework
• Study for exam!
Class Website:
http://mrgchem.weebly.com
Verbal Drill (2 minutes)
• One person speaking at a time (so everyone can
hear the question and answer!)
• You may only go once
• DO NOT CALL OUT IF ITS NOT YOUR TURN.
• If you don’t know the answer, have a classmate
help you. You still need to say the answer if its
your turn!
• Class with the most Verbal Drill points will receive
5 points in the Chapter 5 test
• P4: 0 pts P5: 0 pts P8: 0 pts P9: 0 pts
P10: 0 pts
Some Issues to Address
• Drawing Bohr Models
• Orbital Notation
• Ground-state electron configuration
(lowest energy arrangement)
Writing a Formal Lab
Report
A formal lab report has 6 major parts
1. Cover Page
2. Introduction
3. Materials and Methods
4. Data and Calculations 
5. Discussion and Conclusion
6. References
Data and Calculations
RESULTS/DATA (use tables, pictures,
calculations)
• This section should include any data tables,
observations, or additional notes you make
during the lab.
• All tables, graphs and charts should be
labeled appropriately.
• Use units for all measurements
• Include ALL calculations done. They should be
clearly shown and labeled, step-by-step
Data and Calculations
Section
Your typed rough draft should include:
1. The first mass chart of the different liquids
2. Three mass and density calculation
charts (one for tap water, coke, and
diet coke)
3. Density calculations with ALL WORK and
PROPER UNITS SHOWN (#3, #4, #5 in
conclusion questions section)
Due NEXT Thursday, 12/1/11
Objectives
SWBAT identify valence electrons using
electron configuration.
SWBAT draw Lewis structures using
valence electrons.
3 Different Ways of Showing
Electron Configuration
Orbital
Notation
Electron
Configuration
Notation
1s22s22p5
Noble Gas
Notation
[He]2p5
Electron configuration tells us how electrons
are arranged in an atom.
Valence Electrons (outer
shell electrons)
• Valence electrons are electrons found
in the electron shell with the highest
principal quantum number (which tells
you the main energy level.)
• Valence electrons are what
participate in chemical reactions
COPY THIS.
Identifying the valence
electrons in:
• Oxygen: 1s22s22p4
• Titanium: 1s22s22p63s23p64s23d2
• Potassium: 1s22s22p63s23p64s1
• Add up the electrons in the electron
shells with the HIGHEST PRINCIPAL
QUANTUM NUMBER.
Inner Shell Electrons
• Electrons that are not valence
electrons
• Inner shell electrons are NOT in the
electron shell with the highest principal
quantum number
COPY THIS.
Lewis Dot Structures
• ONLY for valence electrons
How to write Lewis Dot Structures for
Elements:
1. Determine number of valence
electrons
2. Write element symbol
3. use dots to represent valence
electrons around it
Practice
1. Write the electron configuration for the following elements. 2.
Using the element’s electron configuration, write how many
valence electrons each atom has. 3. Draw the Lewis dot
structures for the elements above.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
Fe
Cl
Ar
S
Kr
Mg
Se
F
Ne
C
Ti
Al
Exit Slip
On a half a slip of paper, answer the
following:
1. How many valence electrons does
Phosphorus have?
2. Write the Lewis dot structure for
Chlorine and Phosphorus.
Exceptional
Chemists
The following students have received an
80% or higher either as their 1st marking
period grade or their benchmark
exam#1.
Period 4
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Allan Blanco
James Martinez
Joshua Menendez
Epshan Porter
Luis Ramos
Christopher Venegas
Steven Ortiz
Period 5
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Lissette Diaz
Omar Duran
Andrea Lopez
Natalie Ocampo
Sadajah Myers
Manny Zapata
Maverick Perez
Period 8
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Evelina Cooke
Brandon Pazmino
Abigail Tuohy
Tania Coppi
Jermaine Cummings
Rood Meliscat
Maria Rivera
Period 9
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Stephanie Mendez
Rafael Rodriguez
Aaminah Thomas
Luis Cabrera
Brian Collado
Irma Granados
Jessica Nieves
Jennifer Rivera
Diana Santiago
Nicholas Turner
Brianna Wilkerson
Period 10
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Filipa Barbosa
Fioris Batista
Amanda Blake
Marvin Bonilla
Erica Contin
Deisy Echeverria
Luis Marmol
Tatyana Mckever
Katherine Mosquera
Kayla Rose
Daniela Sanchez
Kayla Black
Cintia Tello
Princess Woodard