1. 3738 Valence Electrons Starter Practice: Connection: Answer questions using Periodic Basics 1. What patterns do you see? 2. What do the vertical columns have in common? 3. What do the horizontal columns have in common? 4. What changes move across the table from left to right? Exit: Pick an element between 1-20 and make a Bohr model. Please label the protons, neutrons, and electrons. Sep 23, 2013 Glue it in after the notes What do you think valence electrons are? Valence Electrons Sep 23, 2013 Application: Work on Periodic Basic coloring and questions

2. Starter What do you think valence electrons are?

3. DateLecture/ Activity/ Lab Page 8/28 Syllabus /Notebook Guidelines 1-2 8/28 Periodic Table/ Formula 3-4 8/28 Tools/ Measurement 5-6 8/28 Lab Report/ Investigations7-8 8/28 Restroom passes/Homework Log 9-10 8/29 Safety equipment 11-12 8/30 Atoms Vocabulary 13-14 9/3Atomic Theory Research notes 15-16 9/4 Observation Activity 17-18 9/5 Model Activity 19-20 9/6Atoms Notes 21-22 9/9 Atomic Charges 23-24 9/10 APEMAN 25-26 9/11 Build An Atom 27-28 9/16 Test Corrections 29-30 9/18 Atomic Math and Bohr Models 31-32 9/19 Periodic Table Notes 33-34 9/20 Periodic Basics 35-36 9/23 Periodic Basics II 37-38 Table of Contents

4. 3738 Valence Electrons Starter Practice: Connection: Answer questions using Periodic Basics 1. What patterns do you see? 2. What do the vertical columns have in common? 3. What do the horizontal columns have in common? 4. What changes move across the table from left to right? Exit: Pick an element between 1-20 and make a Bohr model. Please label the protons, neutrons, and electrons. Sep 23, 2013 Glue it in after the notes What do you think valence electrons are? Valence Electrons Sep 23, 2013 Application: Work on Periodic Basic coloring and questions

5.  The electrons in the outer energy level are called valence electrons What are valence electrons? Practice

6. How do we know how many valence electrons does an element have? The group number tells us how many valence electrons are in each element.

7. Atoms of elements in the same group have the same number of electrons in the outer orbitals/levels of their atoms Exceptions: Transition elements (3-12) Helium (actually has 2 valence electrons) Except for He, it has 2 electrons www.chem4kids.com

8. Examples of Group Elements with the same # of valence electrons 87 Fr (223) 55 Cs 132.905 37 Rb 85.468 19 K 39.098 11 Na 22.990 3 Li 6.941 1 H 1.008 How many electrons do each of these atoms have in their outer orbital/level? What group (family) do these elements belong to?

9. Highlight the outer energy level Name of element # valence electrons Group #

10. 3738 Valence Electrons Starter Practice: Connection: Answer questions using Periodic Basics 1. What patterns do you see? 2. What do the vertical columns have in common? 3. What do the horizontal columns have in common? 4. What changes move across the table from left to right? Exit: Pick an element between 1-20 and make a Bohr model. Please label the protons, neutrons, and electrons. Sep 23, 2013 Glue it in after the notes What do you think valence electrons are? Valence Electrons Sep 23, 2013 Application: Work on Periodic Basic coloring and questions

11. { Periodic Table Basics 1 ________ B 2 ________ 3 _________ 4 P = ____ N= ____ E=____ 5 Step 1. Complete the card for each element. Complete the top section for each element by adding the element’s 1. atomic number 2. name and 3. atomic mass. 4. Determine the number of protons, neutrons, and electrons in each element. 5. Create a Bohr diagram for each element. 5 Boron (10.81)=11 5 6 5 Application:

12. Periodic Table Basics Periodic Table Basics Step 2. Use color pencils to shade in the card for each element.  not Colored=Hydrogen  Green= Li & Na  Orange= B & Al  Pink= O & S  Red= C & Si  Blue= Be & Mg  Tan= N & P  Purple= F & Cl  Yellow= He, Ne & Ar

13. Periodic Table Basics Periodic Table Basics Step 3. Cut the cards apart and arrange according to atomic number in the pattern shown below on a large sheet of construction paper. Step 4. After you have arranged the cards in the correct order, glue them to the paper. 12 345678910 1112131415161718

14. Connection: Answer questions using Periodic Basics 1. What patterns do you see? 2. What do the vertical columns have in common? 3. What do the horizontal columns have in common? 4. What changes move across the table from left to right?

15. 3738 Valence Electrons Starter Practice: Connection: Answer questions using Periodic Basics 1. What patterns do you see? 2. What do the vertical columns have in common? 3. What do the horizontal columns have in common? 4. What changes move across the table from left to right? Exit: Pick an element between 1-20 and make a Bohr model. Please label the protons, neutrons, and electrons. Sep 23, 2013 Glue it in after the notes What do you think valence electrons are? Valence Electrons Sep 23, 2013 Application: Work on Periodic Basic coloring and questions

16. Exit: Pick an element between 1-20 and make a Bohr model. Please label the protons, neutrons, and electrons.

17. 3738 Valence Electrons Starter Practice: Connection: Answer questions using Periodic Basics 1. What patterns do you see? 2. What do the vertical columns have in common? 3. What do the horizontal columns have in common? 4. What changes move across the table from left to right? Exit: Pick an element between 1-20 and make a Bohr model. Please label the protons, neutrons, and electrons. Sep 23, 2013 Glue it in after the notes What do you think valence electrons are? Valence Electrons Sep 23, 2013 Application: Work on Periodic Basic coloring and questions