Catalyst – September 3(5+2), 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  Catalyst  Last Week’s Group of the Week! (3 rd only)  Project Work Time  Exit Question

Today’s Objectives  SWBAT work on their awesome Periodic Table Project!

This Week’s Agenda  Tuesday: Project Work Day  Wednesday: Unit 2 Review Day  Thursday: Unit 2 Test  Friday: ACT Prep, Start Unit 3

Average Mastery Showdown  3 rd Period: 90.93%  4 th Period: 86.39% PRIZE: 5 Bonus Points on 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 8 th to September 9 th ? 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 10 th ?s

Helpful Websites  webelements.com  education.jlab.org/itselemental/  chemicalelements.com  chemicool.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), 2010 WAY 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 LocationRelative MassRelative Charge Protons Neutrons Electrons NUCLEUS OUTSIDE NUCLEUS 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 Families Alkali Metals Alkaline Earth Metals Transition Metals Halogens Noble Gases Lanthanides Actininides H BeBCNOF 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 n o 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 # n o inside 3. 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 Configuration Review Fill in the table below on your notes. Orbital Type (s, p, d, or f) Energy Level# of OrbitalsMaximum # of Electrons s p d f ,2,3,4… 2,3,4… 3,4… 4…

Types of Electron Configuration  Long Electron Configuration  Noble Gas Configuration

Valence Electron Trends on 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 h ow 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 TOMORROW TAKE NO ATOMIC PRISONERS IN ANY KIND 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  Catalyst  Unit 2 Test = DOMINATION!

Today’s Objectives  SWBAT DOMINATE the Unit 2 Test!