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18 Oct. 2010

18 Oct. 2010. Take out Homework: Week 6 Homework #6-9 AND class work from Friday Objective : SWBAT model and describe the structure of atoms and trends in ionization.

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18 Oct. 2010

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  1. 18 Oct. 2010 • Take out Homework: Week 6 Homework #6-9 AND class work from Friday • Objective: SWBAT model and describe the structure of atoms and trends in ionization. • Do now: Sketch an atom of sodium. Draw an arrow pointing to the valence shell. How many valence electrons are there? What ion does sodium form? Write the symbol.

  2. Agenda • Do now, homework check • Review from last week • Clicker “quiz” (counts as classwork grade) • Hand back papers and progress reports Homework: none

  3. Review from last week

  4. Ions formed by group - Add to your PTE 1+ 1 8 2+ 2 3 3+ 4 3- 5 6 2- 7 1- Gain e- Lose e- Anions Cations Objective: SWBAT model atomic structure and relate valence shell electrons to trends on the periodic table.

  5. How many TOTAL electrons does an atom of Lithium (Li) have? • 2 • 1 • 3 • 7 Objective: SWBAT model atomic structure and relate valence shell electrons to trends on the periodic table.

  6. How many TOTAL electrons does an atom of Magnesium (Mg) have? • 2 • 3 • 12 • 24 Objective: SWBAT model atomic structure and relate valence shell electrons to trends on the periodic table.

  7. How many TOTAL electrons does an atom of Chlorine (Cl) have? • 2 • 7 • 17 • 35 Objective: SWBAT model atomic structure and relate valence shell electrons to trends on the periodic table.

  8. How many VALENCE electrons does an atom of Lithium (Li) have? • 1 • 2 • 3 • 7 Objective: SWBAT model atomic structure and relate valence shell electrons to trends on the periodic table.

  9. How many VALENCE electrons does an atom of Magnesium (Mg) have? • 2 • 3 • 12 • 24 Objective: SWBAT model atomic structure and relate valence shell electrons to trends on the periodic table.

  10. How many VALENCE electrons does an atom of Chlorine (Cl) have? • 2 • 7 • 17 • 35 Objective: SWBAT model atomic structure and relate valence shell electrons to trends on the periodic table.

  11. Since Chlorine has 7 valence electrons, to satisfy the octet rule, it must: • Do nothing • Gain one electron • Lose one electron • Lose 7 electrons Objective: SWBAT model atomic structure and relate valence shell electrons to trends on the periodic table.

  12. Since Lithium has 1 valence electron, to satisfy the octet rule, it must: • Do nothing • Gain one electron • Lose one electron • Gain 7 electrons Objective: SWBAT model atomic structure and relate valence shell electrons to trends on the periodic table.

  13. Since Magnesium has 2 valence electrons, to satisfy the octet rule it must: • Do nothing • Gain 2 electrons • Lose 2 electrons • Gain 6 electrons Objective: SWBAT model atomic structure and relate valence shell electrons to trends on the periodic table.

  14. Since neon (Ne) has 8 valence electrons, to satisfy the octet rule it must: • Do nothing • Gain 2 electrons • Lose 8 electrons • Gain 8 electrons Objective: SWBAT model atomic structure and relate valence shell electrons to trends on the periodic table.

  15. Ions formed by group - Add to your PTE 1+ 1 8 2+ 2 3 3+ 4 3- 5 6 2- 7 1- Gain e- Lose e- Anions Cations Objective: SWBAT model atomic structure and relate valence shell electrons to trends on the periodic table.

  16. What is the correct symbol for a Lithium ion? • Li+ • Li- • Li2+ • Li2- Objective: SWBAT model atomic structure and relate valence shell electrons to trends on the periodic table.

  17. What is the correct symbol for a Magnesium ion? • Mg+ • Mg- • Mg2+ • Mg2- Objective: SWBAT model atomic structure and relate valence shell electrons to trends on the periodic table.

  18. Which of the following pairings is correct? • Magnesium/Cation • Chlorine/Anion • Lithium/Cation • Sulfur/Anion • All of the above Objective: SWBAT model atomic structure and relate valence shell electrons to trends on the periodic table.

  19. What is the name of the ion formed from the element Fluorine? • Fluorine • Fluorate • Fluorite • Fluoride Objective: SWBAT model atomic structure and relate valence shell electrons to trends on the periodic table.

  20. What is the name of the ion formed from the element Lithium? • Lithium • Lithiate • Lithite • Lithide Objective: SWBAT model atomic structure and relate valence shell electrons to trends on the periodic table.

  21. C: 19 Oct. 2010 Ionic Bonding • Copy in notebook: Objective: SWBAT model ionic bonding and write names and formulas for ionic compounds • Do now: On handout!! • Draw a picture of one atom of sulfur. Draw an arrow showing the valence shell. Answer the questions to the right. • Total number of electrons: ___________ • Number of valence electrons: ___________ • Gain or lose electrons to form a full valence shell? ________ • How many will it gain or lose? ______ • Symbol with charge: _________

  22. Agenda • Do now • Ionic bonding notes • Naming compounds practice • Ionic bonding modeling • Writing formulas practice • Ionic bonding “Speed Dating” Homework: Finish Week 6 Homework SWBAT model ionic bonding and write names and formulas for ionic compounds

  23. A: 19 Oct. 2010 Ionic Bonding • Copy in notebook: Objective: SWBAT model ionic bonding and write names and formulas for ionic compounds • Do now: On handout!! • Draw a picture of one atom of sulfur. Draw an arrow showing the valence shell. Answer the questions to the right. • Total number of electrons: ___________ • Number of valence electrons: ___________ • Gain or lose electrons to form a full valence shell? ________ • How many will it gain or lose? ______ • Symbol with charge: _________

  24. Agenda • Do now • Ionic bonding notes • Naming compounds practice • Ionic bonding modeling • Writing formulas practice Homework: Finish Week 6 Homework SWBAT model ionic bonding and write names and formulas for ionic compounds

  25. 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- SWBAT model ionic bonding and write names and formulas for ionic compounds

  26. Illustrating ionic bonding • Dot Structures – show the element symbol with the valence electrons surrounding it on 4 sides F Li SWBAT model ionic bonding and write names and formulas for ionic compounds

  27. Ionic Bonding Demo with marbles SWBAT model ionic bonding and write names and formulas for ionic compounds

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

  29. A: 20 Oct. 2010 • Take Out Homework: Week 6 Homework • Objective: SWBAT model ionic bonding and write names and formulas for ionic compounds. • Do now: On your handout: Write the formula or the name of the ionic compounds below: • magnesium chloride • CaO • sodium sulfide • AlBr3 • aluminum iodide

  30. Agenda • Do now • Homework check • Review writing names and formulas for ionic compounds • Ionic bonding “Speed Dating” Homework: Revise your Week 6 Homework

  31. 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 SWBAT model ionic bonding and write names and formulas for ionic compounds

  32. Practice Naming Ionic Compounds • CaF2 • BeO • Li2O • KBr • Rb2S • Al2O3 • SrCl2 • MgO SWBAT model ionic bonding and write names and formulas for ionic compounds

  33. 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 – Example: Ex 1: lithium chloride Ex 2: aluminum oxide Ex 3: lithium sulfide

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

  35. IONS SPEED DATING • Fill in your 4 ion cards (8 minutes) • Mingle with your classmates to make 10 ionic compounds. Fill in all four columns of the chart • 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! Objective: SWBAT model atomic structure and relate valence shell electrons to trends on the periodic table.

  36. Share out results of “speed dating”

  37. Homework • Revise Week 6 Homework SWBAT model ionic bonding and write names and formulas for ionic compounds

  38. A: 21 Oct. 2010 • Take out homework: Week 6 Homework • Objective: SWBAT write names and formulas for ionic compounds with polyatomic ions • Do now: Write the formula or the name of the ionic compounds below: • magnesium oxide • CaS • lithium oxide • AlF3 • cesium sulfide

  39. Agenda • Do now • Homework check: any remaining questions? • Review of writing formulas from compound names • Compounds with polyatomic ions Homework: Week 7 Homework #1-30

  40. So far, each ionic compound has had only two elements. • Can they have more than 2? • yes!

  41. Polyatomic Ions • Ions made of more than one element • Have an overall charge • Ex: NO3- • This is a nitrogen atom, bonded to three oxygen atoms • The whole thing has a charge of 1-

  42. Polyatomic Ions to Memorize • NO2- nitrite • NO3- nitrate • OH- hydroxide • SO42- sulfate • CO32- carbonate • PO43- phosphate • NH4+ ammonium

  43. Naming ionic compounds with polyatomic ions • Cation name + anion name • If the anion is a polyatomic ion, use the name of the polyatomic ion • Ex 1) KNO3 • Ex 2) Ca3(PO4)2

  44. Writing names of ionic compounds • Given the formula, write the name: • NaNO2 • Ca(NO3)2 • Rb2SO4 • AlPO4 • NH4Cl • Al2(CO3)3 • Mg(OH)2

  45. Writing Formulas for Ionic Compounds with Polyatomic Ions • Write the symbols/formulas with charges for the anion and the cation • “Cross” the charge down to the bottom of the other side • Do not write the + or – • Rewrite formula without charges, but with the subscripts only • Ex 1) sodium sulfate • Ex 2) magnesium nitrate

  46. Writing Formulas • Write formulas for the following ionic compounds: • sodium nitrite • sodium nitrate • magnesium sulfate • aluminum carbonate • calcium hydroxide • ammonium oxide • ammonium chloride • magnesium nitrate

  47. Homework • Week 7 Homework #1-30

  48. C: 22 Oct. 2010 • Take Out Homework: Week 7 #1-30 • Objective: SWBAT write names and formulas of ionic compounds that use the stock system. • Do now: Write the formula or the name of the ionic compounds below. Don’t forget to use parenthesis when you cross the charges! • magnesium nitrate • CaSO4 • lithium hydroxide • AlPO4 • ammonium iodide

  49. Agenda • Do now • Homework check • Stock system: Names and formulas • Mixed practice: Writing names and formulas of ANY ionic compound! Homework: Week 7 Homework #

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