Fit any two cards together to make an ionic compound.

2. 10 9 8 7 6 5 4 3 2 1 11/14 Balancing Charges • Fit any two cards together to make an ionic compound. • What type of element (Metal or Non-metal?) are the blue cards? How do you know? Are they gaining OR losing e-? • 3. What type of element (Metal or Non-metal?) are the pink cards? How do you know? Are they gaining OR losing e-? • 4. How many valence e- are in the outermost orbit of each card? What does this tell you. • Try to write the formula of this compound. • If you’ve finished, make another different compound and write the formula.

4. Systematic Nomenclature systematic Chemists use a _______________ set of rules to write and name compounds. Every ionic compounds must be electrically ___________, meaning the total positive and negative charge is ______________. It is also a rule that the ___________ cation is written first and the ______________ anion second (element name changed to the _______ suffix). neutral Al3+ N3- balanced metal AlN non-metal -ide

5. X Y + Formula = XY

6. X Y + + Formula = XY

7. X Y + + + Formula = XY

9. XX Y + + X2Y Formula =

10. X Y Y + + XY2 Formula =

11. Systematic Nomenclature bottom A number in the _________ ________ of the element symbol tells us ______ _______ of those atoms there are in a compound. For example, _____________ means that there are ____ Na atoms and ____ O atoms. 2 right how many Cl- Ba2+ Na2O BaCl2 2 1

12. Systematic Nomenclature Transition metals have ___________ ion charges that are shown using roman numerals. For example, ____ is called _______. 3a variable Cu2+ O2- CuO Cu+ Cr3+ O2- Copper (I) Cr2O3

13. + + + + + + X2Y3

14. + + + + + + X3Y2

16. Practice Problems

17. 10 9 8 7 6 5 4 3 2 1 11/13 Formula Writing Which of the following is the correct formula for the ionic bonding between Aluminum and Oxygen? Show how you got your answer in your notebook and then vote. • Al3O2 • AlO2 • Al3O • Al2O3 Al3+ O2-

18. 10 9 8 7 6 5 4 3 2 1 11/12 Polyatomic Ions Make at least 4 different POLYATOMIC compounds using combinations of BLUE and PINK cards. Raise your hand when done.

19. Systematic Nomenclature There are also many____________ ions (ex. ____________________________). These groups of atoms form groups with their own special names and specific charges. Polyatomic ions should be treated as a ________ object or group. The subscripts of a polyatomic ion can ____ be changed. polyatomic OH- , NH4+ , SO42- , CO32- , NO31- , PO43- PO43- Na+ Na3PO4 single NOT

20. Systematic Nomenclature Chemists use _________________ to show when there is more than one polyatomic ion, for example __________ means that there are _______________. These rules are called _____________ and it allows scientists from all over the world to communicate and ___________. parentheses NO3- Sr2+ Ca(NO3)2 Sr(NO3)2 2 NO3 groups nomenclature SO42- NH4+ collaborate (NH4)2SO4

21. Polyatomic Bonding

22. Polyatomic Bonding

23. Formula Writing Which of the following is the correct formula for the ionic bonding between Ammonium and Phosphate? • NH4PO4 • NH4(PO4)3 • (NH4)3PO4 • (NH4)3(PO4) NH4+ PO43-

25. Formula Writing Which of the following is the correct formula for the ionic bonding between ______________ and _______________? • _________ • _________ • _________ • _________

27. Example Problems Group 1 Group 7 Y X XY X+ Yˉ

28. Example Problems Group 2 Group 6 X Y XY X2+ Y2-

29. Example Problems Group 3 Group 5 X Y XY X3+ Y3-

30. Example Problems Y Group 2 Group 7 XY2 X Y X2+ Yˉ Yˉ

31. Example Problems Group 1 Group 6 X Y X2Y X X+ Y2ˉ X+

32. Example Problems X2+ Group 2 Group 5 Y3ˉ X Y X2+ Y3ˉ X2+ X Y X3Y2 X

33. Example Problems Y2ˉ Group 3 Group 6 X3+ Y2ˉ X X3+ Y2ˉ X X2Y3