Bellwork Balance the following Ionic compounds: How is an ionic bond formed? Potassium and Sulfur Na and Nitrogen

October 21, 2009 SWBAT Name ionic compounds SWBAT distinguish between ionic and covalent compounds Catalyst Show the formation of the following ionic compounds: – Strontium and Oxygen – Aluminum and Iodine

Agenda Catalyst HW Check Kriss Kross’ll make ya… Naming Practice

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…

Kris Kross Method! Ca 3 As 2 Ca 2+ As 3-

Write down the stable ions and cross the oxidation numbers (charges) to make them subscripts Na 1+ Cl 1- NaCl Pb 4+ O 2- Pb 2 O 4

Ionic Compounds K F Ba N Ga O Ca Cl K Si Group Charge

Ionic Compounds K + F - Ba N Ga O Ca Cl K Si Group Charge

Ionic Compounds KF Ba N Ga O Ca Cl K Si Group Charge

Ionic Compounds KF Ba 2+ N 3- Ga O Ca Cl K Si Group Charge

Ionic Compounds KF Ba 3 N 2 Ga O Ca Cl K Si Group Charge

Ionic Compounds KF Ba 3 N 2 Ga 3+ O 2- Ca Cl K Si Group Charge

Ionic Compounds KF Ba 3 N 2 Ga 2 O 3 Ca Cl K Si Group Charge

Ionic Compounds KF Ba 3 N 2 Ga 2 O 3 Ca 2+ Cl - K Si Group Charge

Ionic compounds KF Ba 3 N 2 Ga 2 O 3 CaCl 2 K Si Group Charge

Ionic compounds KF Ba 3 N 2 Ga 2 O 3 CaCl 2 K + Si 4- Group Charge

Balancing Chemical Reactions KF Ba 3 N 2 Ga 2 O 3 CaCl 2 K 4 Si Group Charge

For Polyatomics it gets a bit more complex Pb 4+ SO 4 3- Pb 3 (SO 4 ) 4 (NH 4 ) 1+ PO 4 3- (NH 4 ) 3 PO 4

Practice with writing formulas for ionic compounds Group Charge

Naming Ionic Compounds

Draw a mental line.

Naming Ionic Compounds Binary Ionic Compounds – an ionic compound composed of two elements.

Naming Ionic Compounds 1)Ignore subscripts! 2)Second element ends in -ide.

Naming Ionic Compounds ZnO

Naming Ionic Compounds ZnO Zinc Oxide

Naming Ionic Compounds CaCl 2

Naming Ionic Compounds CaCl 2 Calcium Chloride

Naming Ionic Compounds Al 2 O 3

Naming Ionic Compounds Al 2 O 3 Aluminum Oxide

Naming Ionic Compounds Ternary Ionic Compounds – an ionic compound with more than 2 elements.

Naming Ionic Compounds Ionic Cheat Sheets!

Naming Ionic Compounds Do not lose this…you will need it the rest of your life (in my class).

Naming Ionic Compounds The way you use it…

Naming Ionic Compounds 1) Look up the ions on the cheat sheet and write the words next to them.

Naming Ionic Compounds BaCO 3

Naming Ionic Compounds BaCO 3 Normally the first element is the first piece (cation) and the rest is the second piece (anion).

Naming Ionic Compounds BaCO 3 Barium

Naming Ionic Compounds If the first element is +2, where should we find the second? (Remember, charges must balance!)

Naming Ionic Compounds BaCO 3 Barium

Naming Ionic Compounds BaCO 3 Barium Carbonate

Naming Ionic Compounds AlPO 3

Naming Ionic Compounds AlPO 3 Aluminum

Naming Ionic Compounds AlPO 3 Aluminum Phosphite

Naming Ionic Compounds H 3 PO 4

Naming Ionic Compounds H 3 PO 4 Hydrogen

Naming Ionic Compounds H 3 PO 4 Think: H +, we have 3 which means +3, where will PO 4 be?

Naming Ionic Compounds H 3 PO 4 Hydrogen Phosphate

Naming Ionic Compounds FeSO 4

Naming Ionic Compounds FeSO 4 Notice Iron appears in +2 and +3…

Naming Ionic Compounds FeSO 4 Sulfate

Naming Ionic Compounds FeSO 4 Since Sulfate is -2, Fe must be +2

Naming Ionic Compounds FeSO 4 Iron(II) Sulfate

Naming Ionic Compounds FeSO 4 Iron(II) Sulfate or Ferrous Sulfate

Practice! Use the Kriss Kross method to show what ionic compound will form for the following: – Na and Sulfur – Lead (II) and Oxygen – Chromium (III) and Nitrite – Lithium and Phosphate Name the following compounds: (watch out for transition metals!) – Na 3 PO 4 – Hg 3 BO 3 – Al(CN) 3 – PbBr 4 – Sb 2 (Cr 2 O 7 ) 3