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!