Download
october 4 5 1 1 1 1 2009 n.
Skip this Video
Loading SlideShow in 5 Seconds..
October 4*5*1/1/1*1, 2009 PowerPoint Presentation
Download Presentation
October 4*5*1/1/1*1, 2009

October 4*5*1/1/1*1, 2009

100 Vues Download Presentation
Télécharger la présentation

October 4*5*1/1/1*1, 2009

- - - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

  1. October 4*5*1/1/1*1, 2009 Objectives • SWBAT show the formation of ionic bonds • SWBAT make create balanced ionic compounds • SWBAT Track tests Catalyst • How many electrons will the following atoms need to gain or lose to be stable?? • Na • Cl • Pb • Xe • Ca

  2. Catalyst Review Tracking Formation of Ionic Compounds! Agenda

  3. Unit 3 CHAMPIONS!! (90% and above) Period 2 (79% Avg) Period 3 (80% Avg) Jasmine Castro Jonathan Cordero Christina DeArmas Taylor Delaune Kaynetra Hunter Angelle Johnson Harpreet Kaur Jontrel Mackey Kevin Martin Isaac Wallis Steven Webb • DiQuan Forcell • Ruben Garcia • Dalvin Hickerson • Iesha Nelson • Jahaira Sanchez • Brandon Toney

  4. Ionic Bonds!

  5. Formation of an ion • How many electrons do the following atoms gain or lose to become stable? • Na • Cl • We have a new method of writing this: • We call it showing the formation of an ion • What is different about how we write each one? Lose 1e- Gain 1e- Losing electrons Na  Na+ + 1e- Cl + 1e-  Cl- Gaining electrons

  6. Formation of ion practice • Show the formation of the following ions: • First figure out if it will gain or lose e- • Then show the formation of the ion • H • B • Mg • O • I

  7. Ionic BONDS • Forms between metal and non-metal • Forms between a cation and anion

  8. Ionic BONDS! • When an ionic bond forms, we need to balance out the oxidation numbers (charges) to equal ZERO. • In other words, the same number of electrons need to be gained or lost overall

  9. Ionic BONDS! • If we wanted to form an ionic bond between Sodium and Chlorine… 1. Show the formation of the stable ions • Na  Na+ + 1e- • Cl + 1e-  Cl- 2. Make sure the same number of electrons have been transferred, if not then multiply to make them the same • Write out your final expression showing the number of each atom Na+ + Cl-  NaCl

  10. Let’s try another one! • Show what ionic compound will form from Potassium and Sulfur. • Show the formation of the stable ions • Make sure the same number of electrons have been transferred, if not multiply to make them the same. • Write out your final expression

  11. The hardest example you’ll see… • Show what ionic compound will form from Aluminum and Oxygen

  12. Try these on your own • Show what ionic compounds will form: • Aluminum and Oxygen • Rubidium and Iodine • Magnesium and Oxygen • Strontium and Nitrogen

  13. Alright… • That process takes a long time…scientists aren’t going to do it every single time. • WE HAVE A SHORCUT TO FIND WHAT IONIC COMPOUND WILL FORM! • Get ready for it…

  14. Ca2+As3- Kris Kross Method! Ca3As2

  15. Write down the stable ions and cross the oxidation numbers (charges) to make them subscripts Na1+Cl1- NaCl Pb4+O2- Pb2O4

  16. K F Ba N Ga O Ca Cl K Si Ionic Compounds

  17. K+F- Ba N Ga O Ca Cl K Si Ionic Compounds

  18. KF Ba N Ga O Ca Cl K Si Ionic Compounds

  19. KF Ba2+N3- Ga O Ca Cl K Si Ionic Compounds

  20. KF Ba3N2 Ga O Ca Cl K Si Ionic Compounds

  21. KF Ba3N2 Ga3+O2- Ca Cl K Si Ionic Compounds

  22. KF Ba3N2 Ga2O3 Ca Cl K Si Ionic Compounds

  23. KF Ba3N2 Ga2O3 Ca2+Cl- K Si Ionic Compounds

  24. KF Ba3N2 Ga2O3 CaCl2 K Si Ionic compounds

  25. KF Ba3N2 Ga2O3 CaCl2 K+Si4- Ionic compounds

  26. KF Ba3N2 Ga2O3 CaCl2 K4Si Balancing Chemical Reactions

  27. For Polyatomics it gets a bit more complex Pb4+SO43- Pb3(SO4)4 (NH4)1+PO43- (NH4)3 PO4

  28. Practice with writing formulas for ionic compounds

  29. Exit Ticket • What do the two charges in an ionic compound have to balance to? • Write the formulas for the following ions: A) K O B) Na Br C) Mg S