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A: 8 November 2011

A: 8 November 2011. Take out your element facebook page Objective : You will be able to: Review electron configuration, ionization and the valence shell Describe trends in atomic radius and electronegativity on the periodic table. Do now : Track your exit ticket (2.10-2.13)

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A: 8 November 2011

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  1. A: 8 November 2011 • Take out your element facebook page • Objective: You will be able to: • Review electron configuration, ionization and the valence shell • Describe trends in atomic radius and electronegativity on the periodic table. • Do now: Track your exit ticket (2.10-2.13) With your partner, correct the answers on your exit ticket.

  2. Agenda • Do now • Review for quiz • Unit 3 Objectives! • Trends in atomic radius and electronegativity Homework: Element Facebook Page: tomorrow Unit 2 Quiz Objectives 2.7-2.13 tomorrow

  3. Quiz Review – in your notebook • Draw the orbital notation for oxygen. • Electrons are represented by ______. • Each individual box represents ______. • Write the electron configuration notation for oxygen. • Circle the valence shell • What does the “1” stand for? “s”? “2”? • How many valence electrons does it have? • Draw its dot diagram.

  4. What do the dots represent? • How many protons does oxygen have? • Draw a picture of oxygen that shows the energy levels. Now, turn it into an ion of oxygen. • Write the electron configuration for the oxygen ion. • Write the symbol with the charge for the oxygen ion.

  5. Atoms vs. Ions • Venn Diagram

  6. What do Group 1 elements have in common? • http://www.youtube.com/watch?v=GVoJZkmAAfA

  7. If you finish early… • Work on your Element Facebook page • Start on the packet I just left on your desk • Study for a quiz you need to retake • Do other work silently

  8. A: 9 November 2011 • Take Out Homework: Element facebook page • Objective: You will be able to: • show what you know about electron configuration and ions • describe and sketch trends in electronegativity and atomic radius • Do now: What is one thing that atoms and ions have in common? One difference?

  9. Agenda • Do now • Objectives 2.7-2.13 Quiz • Trends on the periodic table • Graphing and analyzing trends: Example • Finish graphing and analyzing trends Homework: Graphing and Analyzing Trends: tomorrow

  10. Quiz • When you finish, silently: • Turn it over on your desk. • Track your 2.1 to 2.6 quiz that you just got back. Keep out your tracking sheet for stamps! • Stack up all your Unit 2 papers (Quizzes, Homework, Labs…) and paperclip them together. Put the Unit 2 Mastery Tracking Sheet on Top! • Start the Trends on the Periodic Table worksheet or • Work on other work

  11. Trends on the Periodic Table

  12. Atomic Radius (size of the atom) Atomic radius increases Atomic radius increases

  13. Atomic radius • As you move down the periodic table, more energy levels are added • This increases the size of the atom • As you move left to right across a period, more electrons are added to the SAME energy level • There is increasing attraction between more electrons and the positive nucleus • Atom size decreases!

  14. Electronegativity • The ability of an atom to attract electrons to itself. • Elements that want to lose electrons have lowelectroneg., • Elements that want to gain electrons have highelectroneg. • Increases going up a group • Increasesgoing across a period • The smaller the atom, the easier it can attract other electrons • Most reactive: F • Least reactive: Fr

  15. Electronegativity: ability of an atom to attract electrons Electronegativity Increases Electronegativity Increases

  16. Trends on the Periodic Table • With your partner and your periodic table, complete the front, ranking each row in order of increasing atomic radius. • Then, complete one table on the back using the special periodic table • Then, we’ll do one graph and analysis together.

  17. Homework • Trends in atomic radius worksheet (front + 4 graphs, 4 analysis paragraphs): tomorrow

  18. A: 11 November 2011 • Take Out Homework: Trends on the Periodic Table Graphing • Objective: You will be able to: • differentiate between ionic and covalent bonding and predict bond type • Do now: Write the symbol for the ion formed by calcium. Explain how you determined your answer.

  19. Agenda • Do now, collect homework • Ionic vs. covalent bonding: examples, modeling and practice problems • Exit Ticket Homework: Week 10/11 Homework #1-12: due Monday

  20. Modeling Bonding

  21. Ionic Bonding • To gain or lose electrons, atoms need to give or take them from other atoms • Ionic bond – one atom gives one or more electrons to another atom • The oppositely charged ions are attracted to one another (electrostatic attraction) • this causes them to become bonded together • Ions will transfer electrons (and bond) so that they both get 8 valence e-

  22. Ionic Compounds • How do you know if a compound is ionic? • One cation (left/middle of periodic table) + One anion (right of periodic table or a polyatomic anion) • Transfer electrons so that both atoms have a full valence shell. • Are bonded by electrostatic attraction.

  23. Color your periodic table

  24. Ionic Bonding F Li

  25. Cartooning Ionic Bonding • On your Week 10/11 Homework packet…

  26. Sodium metal reacts with chlorine gas to form solid sodium chloride Na+ + Cl- NaCl Na

  27. Covalent/Molecular Compounds • Two or more elements from the right side • Two or more nonmetals • Share electrons to make full valence shells

  28. Dot Diagrams of Covalent Bonds • Cl2 • F2 • H2

  29. Modeling Covalent Bonding

  30. Homework • Week 10/11 Homework #1-12: due Monday

  31. A: 15 November 2011 • Take Out Homework: Week 10/11 #1-11 • Objective: You will be able to: • differentiate between ionic and covalent bonds and write names for ionic compounds. • Do now: An atom of calcium meets an atom of sulfur. Describe what happens and what type of bond they make. (2 complete sentences)

  32. Agenda • Do now/homework check • Review ionic vs. covalent bonding • Naming ionic compounds: examples and practice problems • Hand back and track quizzes, celebrate progress Homework: Week 10/11 Homework #12-13: Weds. Quiz Thurs. Obj. 3.1-3.4

  33. Videos! • http://www.youtube.com/watch?v=QqjcCvzWwww • http://www.youtube.com/watch?v=yjge1WdCFPs&feature=PlayList&p=8D43FC9FA07913EF&playnext=1&playnext_from=PL&index=23

  34. Ionic or Covalent? • In your notebook, copy each example. Then, write an “I” for ionic or a “C” for covalent • NaCl • NO2 • N2Br • NaI • KNO3 • CaS • H2O • Cl2 • Cu(OH)2 • CCl4

  35. Naming ionic compounds • Write the cation name • Name of the element • Write the anion name • Beginning of element name + -ide • Ex 1: LiCl • Ex 2: Al2O3

  36. Practice Naming Ionic Compounds • CaF2 • BeO • Li2O • KBr • Rb2S • Al2O3 • SrCl2 • MgO

  37. Homework Week 10/11 Homework #12-13: Weds. Quiz Thurs. Obj. 3.1-3.4

  38. Videos! • http://www.youtube.com/watch?v=QqjcCvzWwww • http://www.youtube.com/watch?v=yjge1WdCFPs&feature=PlayList&p=8D43FC9FA07913EF&playnext=1&playnext_from=PL&index=23

  39. Ionic or Covalent? • In your notebook, copy each example. Then, write an “I” for ionic or a “C” for covalent • NaCl • NO2 • N2Br • NaI • KNO3 • CaS • H2O • Cl2 • Cu(OH)2 • CCl4

  40. A: 16 November 2011 • Take Out Homework: Week 10/11 #12-13 • Objective: You will be able to • write formulas and names for ionic compounds • Do now: Ionic or covalent? • a. CaCl2 • b. CO2 • c. AlF3

  41. Agenda • Do now/homework check • Exit ticket • Writing formulas for ionic compounds • Practice problems • Ionic bonding “speed dating” • Formulas for ionic compounds assignment Homework: Week 10/11 Homework p. 4 Quiz tomorrow (Obj. 3.1-3.4)

  42. Exit Ticket • When you finish, paperclip all your unit 2 materials together and raise your hand. • I’ll give one person at a time permission to put them in your green folder

  43. Writing Formulas for Ionic Compounds • Write each ion symbol with the charge • “Cross” the charges down to the bottom of the opposite element • Rewrite symbols with subscripts • Do not write + or –, or 1 Examples: Ex 1: aluminum oxide Ex 2: lithium sulfide Ex 3: magnesium oxide

  44. Writing formulas from names • potassium chloride • magnesium bromide • rubidium sulfide • beryllium fluoride • sodium oxide • magnesium sulfide • aluminum oxide • aluminum iodide

  45. IONS SPEED DATING • Fill in your 2 ion cards (6 minutes) • Mingle with your classmates to make 10 ionic compounds. Fill in all four columns of the chart. • Cation (+) FIRST! • Each correctly named compound will earn you 10 points. Each compound over 10 will earn you bonus points! • Check to be sure you write the CATION first! • If you run out of combinations, trade an ion with a classmate. Objective: SWBAT model atomic structure and relate valence shell electrons to trends on the periodic table.

  46. Before the end of the period Stay in your seat and… • Finish Week 10 HW Page 4 and get it stamped! • Be sure your mastery tracking sheet from Unit 2 is stamped • Organize your Unit 2 materials and paper clip them. • Leave them in your green folder. (One person up at a time, please) • Work quietly on other work

  47. Homework • Week 10/11 Homework p. 4: tomorrow • Quiz on 3.1-3.4: tomorrow

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