ATOMIC CONCEPT SEPTEMBER 30, 2015

DO NOW– 9/30/2015 You are silent and seated In your Notebook, write the Header (Name, Today Date) and write today AIM (located on whiteboard) and then answer the following questions: ◦ Q1: what is ground state? ◦ Q2: In regard to the electrons located in the first and second shells, which electrons have more energy? ◦ Q3: How do you determine the number of valence electrons for an atom?

REMINDER QUIZ 3 MAKEUP AND RETAKE TODAY FROM 2:40 – 3:15PM QUIZ 4 THIS FRIDAY NOTEBOOK CHECK THIS FRIDAY

AIM IS THE GROUND STATE DIFFERENT FROM THE EXCITED STATE?

Excited State Electron Configurations TAKE 2 MINUTES TO READ AND ANNOTATE THIS SECTION SILENTLY

THE SCIENCE Sodium has an electron configuration of ◦ Where can I find the electron configuration information? ◦ Is this excited or ground state? ◦ Why?

THE SCIENCE CONTINUE When the electron configuration changes for sodium to 2-7-2, what happens? ◦ Does the number of electrons change? ◦ Can an atom maintain this electron configuration? ◦ What happens when the electron loses energy?

GROUND VS EXCITED Nitrogen (2-5): Iron ( ): Potassium ( ): Lithium (1-2): Silver ( ): Chromium ( ):

WHAT IS THE GROUND STATE Aluminum (2-7-4):

WHAT IS THE GROUND STATE Aluminum (2-7-4): Arsenic ( ): Chlorine (2-6-9): Copper ( ) Sulfur (2-6-8): Iodine ( ):

BOHR MODEL COMPLETE THE TABLE. ◦ CARBON ELECTRON CONFIGURATIO N EXCITED ELECTRON CONFIGURATION DIAGRAM (BOHR model)

SODIUM ELECTRON CONFIGURATIO N EXCITED ELECTRON CONFIGURATIO N DIAGRAM

POST LAB Q1 EXPLAIN THE DIFFERENCE BETWEEN GROUND STATE AND EXCITED STATE.

SUMMARY: TODAY LESSON

HOMEWORK REMINDER ◦ Review elements 1-6 ◦ Save the Scientist Performance Task is due TODAY by 5PM. Make sure you submit it via Google Drive