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Valence Electrons

37. 38. Valence Electrons. Valence Electrons. Sep 23, 2013. Sep 23, 2013. S tarter. A pplication: Work on Periodic Basic coloring and questions. What do you think valence electrons are?. C onnection: Answer questions using Periodic Basics 1. What patterns do you see?

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Valence Electrons

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  1. 37 38 Valence Electrons Valence Electrons Sep 23, 2013 Sep 23, 2013 Starter Application: Work on Periodic Basic coloring and questions What do you think valence electrons are? • 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? Practice: Glue it in after the notes Exit: Pick an element between 1-20 and make a Bohr model. Please label the protons, neutrons, and electrons.

  2. What do you think valence electrons are? Starter

  3. Table of Contents Date Lecture/ 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/ Investigations 7-8 8/28 Restroom passes/Homework Log 9-10 8/29 Safety equipment 11-12 8/30 Atoms Vocabulary 13-14 9/3 Atomic Theory Research notes 15-16 9/4 Observation Activity 17-18 9/5 Model Activity 19-20 9/6 Atoms 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

  4. 37 38 Valence Electrons Valence Electrons Sep 23, 2013 Sep 23, 2013 Starter Application: Work on Periodic Basic coloring and questions What do you think valence electrons are? • 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? Practice: Glue it in after the notes Exit: Pick an element between 1-20 and make a Bohr model. Please label the protons, neutrons, and electrons.

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

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

  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) Group 8 = 8 electrons Group 1 = 1 electron Except for He, it has 2 electrons Group 2 = 2 electrons 3,4,5,6,7 www.chem4kids.com

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

  9. Highlight the outer energy level

  10. 37 38 Valence Electrons Valence Electrons Sep 23, 2013 Sep 23, 2013 Starter Application: Work on Periodic Basic coloring and questions What do you think valence electrons are? • 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? Practice: Glue it in after the notes Exit: Pick an element between 1-20 and make a Bohr model. Please label the protons, neutrons, and electrons.

  11. Application: 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

  12. 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 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.

  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. 37 38 Valence Electrons Valence Electrons Sep 23, 2013 Sep 23, 2013 Starter Application: Work on Periodic Basic coloring and questions What do you think valence electrons are? • 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? Practice: Glue it in after the notes Exit: Pick an element between 1-20 and make a Bohr model. Please label the protons, neutrons, and electrons.

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

  17. 37 38 Valence Electrons Valence Electrons Sep 23, 2013 Sep 23, 2013 Starter Application: Work on Periodic Basic coloring and questions What do you think valence electrons are? • 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? Practice: Glue it in after the notes Exit: Pick an element between 1-20 and make a Bohr model. Please label the protons, neutrons, and electrons.

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