catalyst – september 3(5+2), 2010
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Catalyst – September 3(5+2), 2010
1. What is an engineer? 2. List at least 3 classes you need
to take to prepare for being an engineer?
3. List at least 3 places you could work as an engineer.
Today’s Agenda
CatalystLast Week’s Group of the Week! (3rd only)
Project Work TimeExit Question
Today’s Objectives
SWBAT work on their awesome Periodic Table Project!
This Week’s Agenda
Tuesday: Project Work DayWednesday: Unit 2 Review Day
Thursday: Unit 2 TestFriday: ACT Prep, Start Unit 3
Average Mastery Showdown
3rd Period: 90.93%4th Period: 86.39%PRIZE: 5 Bonus Pointson the Unit 2 Test!
Binder Quiz!
Take out your binder and one piece of paper
You will have 5 minutes to answer the following questions
Write your name on paper and answer all questions (do not write the question) and turn paper over when you are done
If you talk or cheat, you get an F Worth 100 Participation Points (just like
a Weekly Worksheet grade)
Binder Quiz Questions!Just write the answers!!!!
1. Ms. Stroh’s cell number is on the Class Syllabus. What is Ms. Stroh’s cell number?
2. How many quiz and test resumes should you have completed by now?
3. What topic did we take notes on for 2 days from September 8th to September 9th?
4. Go to your Electron Configuration Notes – Write what’s in the blanks you filled in on Key Point #2.
5. What was the last lab we did, on September 10th?s
Helpful Websites
webelements.comeducation.jlab.org/itselemental/
chemicalelements.comchemicool.com
Exit Question
1. What do you still need to do on your individual project before you turn it in on Friday?
2. What does your group still need to do on your group project before you turn it in on Friday?
Catalyst – September 8x-x (x=4), 2010WAY BACK WEDNESDAY!
Today’s Agenda
Catalyst Review with Ms. Stroh Personal Work Time Exit Question
Today’s Objectives
SWBAT get ready to
DOMINATE the Unit 2 Test!
Conclusion, Theory, Law
Democritus’ Big Contribution?
First ideas about the
atom!Named them!
Dalton’s Big Contribution?
First real theory about
the atom!
Thomson’s Big Contribution?
Atoms ARE divisible!
Discovered the electron!
Rutherford’s Big Contribution?
Discovered the nucleus!
-
-
- -+
-
-
-
-
Bohr’s Big Contribution?
First to talk about where
electrons hang out in the atom
– ORBITS!
Schrodinger’s Big Contribution?
No to orbits!YES to ORBITALS!
(also where electrons hang
out)
Subatomic Particles
Subatomic
Particle
Location Relative Mass
Relative Charge
Protons
Neutrons
Electrons
NUCLEUS
NUCLEUSOUTSIDE NUCLEU
S
1 amu
1 amu
1/1840 amu
(virtually zero!)
1+
NEUTRAL
1-
Relative means compared to
others
Periodic Law
Periodic Law is the statement that there is a periodic (patterned) repetition of chemical and physical properties of the elements when they are arranged in increasing atomic number
Metals, Metalloids, and Nonmetals
Major FamiliesAlkali Metals
Alkaline Earth Metals
Transition Metals
Halogens
Noble Gases
LanthanidesActininides
H
Be B C N O F
He
Ce
Th
Bohr Models of Atoms
Key Point #1: A Bohr model depicts an atom as a small, positively charged nucleus surrounded by electrons that travel in circular orbits around the nucleus
16 p+
16 no
Sulfur: 16 protons
16 neutrons
16 electrons
Energy Levels
Key Point #2: Energy levels (or shells) are paths around the nucleus where electrons travel Energy levels are also known as orbits
Energy increases as you move further from the nucleus
Valence Electrons
Key Point #3: Valence electrons (ve-) are electrons in the outermost energy level They are the furthest from the nucleus
An atom could have 1 ve-, 2 ve-, 3 ve-, etc.
Steps to Making a Bohr Model
1. Determine the number protons, neutrons, and electrons in the atom
2. Draw the nucleus (circle) with # p+ and # no
inside3. Draw the first energy level (circle around
nucleus) and draw up to 2 dots (electrons)4. If needed, draw second energy level (second
circle) and draw up to 8 dots (electrons)5. If needed, draw third energy level (third
circle) and draw up to 8 dots (electrons)6. If needed, draw fourth energy level (fourth
circle) and draw up to 18 dots (electrons)
Electron ConfigurationReviewFill in the table below on your notes.
Orbital Type
(s, p, d, or f)
Energy Level
# of Orbitals
Maximum # of
Electrons
s
p
5
14
1 2
3 6
d
f 7
10
1,2,3,4…
2,3,4…
3,4…
4…
Types of Electron Configuration Long Electron Configuration Noble Gas Configuration
Valence Electron Trendson the Periodic Table
You have this in your notes – back of the
Periodic Table Basics
Notes!
What is Atomic Radius?
Key Point #1: Atomic radius is how big an atom is and is also known as atomic size
What is Electronegativity?
Key Point #2: Electronegativity is the ability of an atom to attract electrons to itself in a chemical bond
How much an atom wants electrons
So as you go LEFT to RIGHT… Key Point #3: As you move left to right across the periodic table, positive charge increases so… ELECTRONEGATIVITY INCREASES
Therefore, ATOMIC RADIUS DECREASES
So as you go from TOP to BOTTOM…
Key Point #4: As you go from top to bottom on the periodic table, energy levels (shells) increase so… ATOMIC RADIUS INCREASES Therefore, ELECTRONEGATIVITY DECREASES
On the Diag….onal
How are atomic radius and electronegativity related?
Key Point #5: Atomic radius and electronegativity are indirectly/inversely related.
ELECTRONEGATIVITY
ATOMIC RADIUS
Exit Question
What do you need to do to prepare for the test tomorrow?
YOUR MISSION: DOMINATE THE TEST
TOMORROWTAKE NO ATOMIC PRISONERS IN
ANYKIND OF PERIODIC WAY!
Catalyst – September 7+22, 2010
NO CATALYST TODAY!!!You have 7 minutes to
study!Then, we will begin the
DOMINATION!
Today’s Agenda
CatalystUnit 2 Test = DOMINATION!
Today’s Objectives
SWBAT DOMINATE the Unit 2 Test!
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