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11/5/2012 Standards : 2 O bjectives :

11/5/2012 Standards : 2 O bjectives : a. Complete Zum - Formation of Ionic Cmpds (computer exercise) b. Be able to combine + and - ions in their proper ratios D O NOW : 1. Read and be able to report on Zum – Formation of Ionic Cmpds (today's lab) H OMEWORK :

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11/5/2012 Standards : 2 O bjectives :

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  1. 11/5/2012 Standards: 2 Objectives: a. Complete Zum - Formation of Ionic Cmpds (computer exercise) b. Be able to combine + and - ions in their proper ratios DO NOW: 1. Read and be able to report on Zum – Formation of Ionic Cmpds (today's lab) HOMEWORK: 1. Watch this video from YouTube. Write 1) Lattice Energy on first line. Go down 10 lines and write 2) Ionization Energy. Take 10 lines of notes on Lattice Energy and 2 lines on Ionization Energy. (first 4 min 30 sec) covers Lattice Energy. (7 min 15 sec – 9 min 15 sec) covers Ionization Energy (3pts) Std: 2 2. SN Ch 8.2 p. 97-98 (2 pts) Std: 2 ========================================================== NO STAMPING TODAY BLACK TRAY: Models of Ions - Cut & Paste – (5 pts) Std 2 WAIT !! ChemThink due tomorrow night by midnight

  2. Name: ____________ Date:______ Per:___ Models of Ions - Cut & Paste

  3. Mg2+ PO43- Mg2+ Mg2+ Mg2+ PO43- PO43- SO42- K1+ SO42- K1+ K1+

  4. 11/6/2012 Standards: 2 Objectives: a. Be able to describe how ions are formed. b. Be able to describe and write notation for ionic bond formation. DO NOW: 1. Write the electron configuration for each of the following ions: Na1+ Cl1- S2- HOMEWORK: 1. SN Ch 8.3 & 8.4 p. 99 – 102 (3 pts) Std 2 2. Ch 8.2 Assess p. 220 12-15 (2 pts) Std 2 =========================================================== STAMPS: Journal 11/5 1. SN Ch 8.2 p. 97-98 (2 pts) Std 2 2. Stamp: Watch this video from YouTube. Write " 1) Lattice Energy" on the first line. Go down 10 lines and write " 2) Ionization Energy". Take 10 lines of notes on Lattice Energy and 2 lines on Ionization Energy.

  5. ANNOUNCEMENTS: 1. Memorize Ions - 1 Thurs - 6 ions (6 pts) nitrate ion, acetate ion, sulfate ion, carbonate ion, phosphate ion, ammonium ion 2. IF YOU MISSED YESTERDATY'S LAB, or couldn't finish - make-ups during lunch or before school 3. Pics of Friday's rally (194 pics & vids) at Photobucket.com/GHSActivities (GHSActivities part is case sensitive) Free downloads of anything you want. 4. ChemThink due tonight at midnight.

  6. Example of noble gas electron configuration for an element and its ion: the element B [He] 2s2 2p1 the ion B3+ [He] or 1s2

  7. Show Interactive Chalkboard vid of reaction: 2 Na + Cl2 ----> 2 NaCl Example of chemical reaction

  8. Lattice Energies are always given as negative numbers SIZE Smaller ion ===> more lattice energy Larger ion ===> less lattice energy CHARGE Larger (+ or -) ===> more lattice energy INDIRECT INDIRECT DIRECT DIRECT Charge more important than size

  9. 1 Which of these ionic compuounds has the highest lattice energy? A B

  10. 2 Which of these ionic compuounds has the highest lattice energy? A B

  11. 11/7/2012 Standards: 2 (Chemical Bonding), 5 (naming cmpds) Objectives: a. Mem. Ions Quiz 1 tomorrow b. Be able to predict relative lattice energies of different molecules c. Run ChemThink.com for Ionic Cmpds to check answers (vid on HW page) DO NOW: 1. Write the individual ions for potassium sulfide & magnesium oxide 2. Write correct molecule formulas for each. (use criss cross method) 3. Which of these 2 compounds has the most LE (lattice energy) and why? HOMEWORK: 1. Ch 8 Assess p. 236 67-73 (5 pts) Std 2 ======================================================== STAMPS: Journal 11/6 1. Stamp: SN Ch 8.3 & 8.4 p. 99 – 102 (3 pts) Std 2 2. Ch 8.2 Assess p. 220 12-15 (2 pts) Note for teacher This worked really well today 11/17/11. I gave the quiz & allowed 6 min to take it. Then I had students pick + & - ions from columns 1,2,3,6, & 7 only. Common errors discussed as they showed up: if subscript is 1, we don't write any subscript if both charges are = but opposite - we have no subscript, because we only need 1 of ea for net zero if subscripts are odd & even, simply use criss cross to get subscripts symbols must be written in capital letter. If symbol is 2 letter, 2nd letter is lower case It was difficult to do 3 questions, not enough time. Questions answered with responders

  12. Eric P1

  13. Prop 30 passed :) Prop 32 defeated :) Prop 34 defeated :) Prop 38 defeated :( What can I say, were stuck with another 4 yrs of Obama. Good luck USA! :(

  14. DO NOW - figuring charge value & largest lattice energy potassium sulfide ions potassium sulfide formula potassium sulfide charge value magnesium oxide ions magnesium oxide formula magnesium oxide charge value Winner? Why?

  15. p

  16. Practice Problems K2S K 1+ S 2- 1. K & S MgO Mg 2+ O 2- 2. Mg & O *the subscripts cancel each other out NaF Na1+ F1- 3. Na & F *the subscripts cancel each other out

  17. Rules for Making Ionic CompoundsUse the oxidation # of element. For all representative elements, group # determines oxidation #. Group 1 = 1+ Group 2=2+, Gp 3=3+, Gp 6=2-, Gp 7=1- EXAMPLE: Write the correct formula with the following 2 elements: Ca & Cl 2+ 1- Ca Cl Since the charges are different you will need to use subscripts to indicate the ratio of ions in the formula -1 Step 1: Cross the charges over 2+ 1- Ca Cl Ca Cl 2+ 1- Step 2: Remove + and - signs Cl Ca ---> 1 2 Step 3: Write the completed formula, no 1's & smallest ratios CaCl2 ---

  18. Use course-2-assignment-ionic-formulas.notebook to intro how ions bond ====> ratios of ions

  19. Practice putting a metal (columns 1-3) with a non-metal (columns 6 or 7)

  20. 3 Answer? If the follwing 2 atoms react with each other to form an ionic molecule, what with the formula be? 49In + 34Se ----->

  21. 4 Answer? If the follwing 2 atoms react with each other to form an ionic molecule, what with the formula be? 11Na + 16S ----->

  22. 5 Answer? If the follwing 2 atoms react with each other to form an ionic molecule, what with the formula be? 39Sr + 8O ----->

  23. 11/8/2012 Standards: 2 Objectives: a. Be able to define "sea of electrons, substitutional and Interstitial alloys b. Demoes of Mg + O2 ---> and conductivity of salts in water. c. Be able to name some simple ionic compounds d. Be able to put + & - ions together in their proper ratios DO NOW: 1. Slap-it for the following ions: ammonium, nitrate, sulfate, photphate, acetate, carbonate HOMEWORK: 1. Ch 8.4 Sec Assess, p. 231 40-44 (2pts) Std: 2 2. Ch 8 Assess, p. 237 80-84 (3pts) Std: 2 ======================================================== STAMPS: Journal 11/7 1. Ch 8 Assess p. 236 67-73 (5 pts) Std 2

  24. ammonium, nitrate, sulfate, phosphate, acetate, carbonate

  25. See link in Web Helps > Ch 5 > Songs (the first one)

  26. 11/8/12 15 lines? YES BUT only 5 questions

  27. If you use pencil - you cannot get an error in grading corrected If you use pen - you can get an error in grading corrected, if and only if you do not have a cross out When done turn over quiz turn over ans sheet

  28. P3 stopped at formula on top

  29. 11/9/2012 Standards: 2 (Chemical Bonds) Objectives: a. Be able to define "sea of electrons, substitutional and Interstitial alloys b. Be able to name some simple ionic compounds c. Be able to put + & - ions together in their proper ratios DO NOW: 1. Write these pairs of atoms as ions, and then create the correct formulas for the molecules they will form: a. sodium & acetate b. beryllium and carbonate HOMEWORK: 1. HANDOUT - Writing Chemical Formulas from Ions (5 pts) Std 2 2. Card Dec for: Chromate ion, dichromate ion, chlorite ion ======================================================== BASKET: Journal 11/8 1. Ch 8.4 Sec Assess, p. 231 40-44 (2pts) Std: 2 2. Ch 8 Assess, p. 237 80-84 (3pts) Std: 2

  30. DO NOW

  31. Rules for Making Ionic CompoundsUse the oxidation # of element. For MOST representative elements, group # determines oxidation #. EXAMPLE: Write the correct formula with the following 2 elements: Ca & Cl 2+ 1- Ca Cl Since the charges are different you will need to use subscripts to indicate the ratio of ions in the formula -1 Step 1: Cross the charges over TAKE ABSOLUTE VALUE Ca Cl 2 1 Step 2: Write the completed formula, no 1's & smallest ratios CaCl2

  32. Naming Ionic Molecules Metal or positive ions (always written first) - use name of metal or name of positive ion Non-metal (negative) Ions of single atoms - name of atom but use ending -ide Polyatomic - use name of ion (see mem. ions) Practice Na carbonate sulfate Ba acetate Be chlorine Ca sulfur Mg oxygen Al ANSWERS: Na2CO3 Be(C2H3O2)2 MgS BaSO4 CaCl2 Al2O3

  33. Homework questions from last night

  34. Note blue haze represents “sea of electrons - text p. 228

  35. Show molecules of different types and how they are packed (other laptop)

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