Warm-Up :Warm-Up Name the following ions: Mn+7 Br- Ba+2


Objectives :Objectives Given a name of a binary ionic compound, write the formula of the compound.


Formula Units :Formula Units Molecular substances Made of molecules Use prefixes in names Counted as molecules Ionic substances Made of ions (cations and anions) No prefixes in names Counted as formula units


Formula Units :Formula Units Formula units because… Ions are not bound together Elements are in simplest ratio


Calcium chloride is an ionic compound. What is its formula? :Calcium chloride is an ionic compound. What is its formula?


Calcium chloride is an ionic compound. What is its formula? :Calcium chloride is an ionic compound. What is its formula? Ca Write the symbol for calcium


Calcium chloride is an ionic compound. What is its formula? :Calcium chloride is an ionic compound. What is its formula? Ca 2+ Be sure to have the charge for calcium


Calcium chloride is an ionic compound. What is its formula? :Calcium chloride is an ionic compound. What is its formula? Cl Ca 2+ What is the symbol for chloride?


Calcium chloride is an ionic compound. What is its formula? :Calcium chloride is an ionic compound. What is its formula? Cl Ca 2+ - What is charge on chloride?


Calcium chloride is an ionic compound. What is its formula? :Calcium chloride is an ionic compound. What is its formula? Cl Ca 2+ - Make the number in the charge of the cation become the subscript for the anion


Calcium chloride is an ionic compound. What is its formula? :Calcium chloride is an ionic compound. What is its formula? Cl Ca 2+ - Make the number in the charge of the cation become the subscript for the anion


Calcium chloride is an ionic compound. What is its formula? :Calcium chloride is an ionic compound. What is its formula? Cl Ca 2+ - Make the number in the charge of the cation become the subscript for the anion


Calcium chloride is an ionic compound. What is its formula? :Calcium chloride is an ionic compound. What is its formula? Cl Ca 2+ - Make the number in the charge of the cation become the subscript for the anion


Calcium chloride is an ionic compound. What is its formula? :Calcium chloride is an ionic compound. What is its formula? Cl Ca 2+ - Make the number in the charge of the cation become the subscript for the anion


Calcium chloride is an ionic compound. What is its formula? :Calcium chloride is an ionic compound. What is its formula? Cl Ca 2+ - Make the number in the charge of the cation become the subscript for the anion


Calcium chloride is an ionic compound. What is its formula? :Calcium chloride is an ionic compound. What is its formula? Cl Ca 2 - Ignore the + and - signs.


Calcium chloride is an ionic compound. What is its formula? :Calcium chloride is an ionic compound. What is its formula? Cl Ca 2 - Make the number in the charge of the anion become the subscript for the cation


Calcium chloride is an ionic compound. What is its formula? :Calcium chloride is an ionic compound. What is its formula? Cl Ca 2 -1 Make the number in the charge of the anion become the subscript for the cation


Calcium chloride is an ionic compound. What is its formula? :Calcium chloride is an ionic compound. What is its formula? Cl Ca 2 -1 Make the number in the charge of the anion become the subscript for the cation


Calcium chloride is an ionic compound. What is its formula? :Calcium chloride is an ionic compound. What is its formula? Cl Ca 2 -1 Make the number in the charge of the anion become the subscript for the cation


Calcium chloride is an ionic compound. What is its formula? :Calcium chloride is an ionic compound. What is its formula? Cl Ca 2 -1 Make the number in the charge of the anion become the subscript for the cation


Calcium chloride is an ionic compound. What is its formula? :Calcium chloride is an ionic compound. What is its formula? Cl Ca 2 -1 Make the number in the charge of the anion become the subscript for the cation


Calcium chloride is an ionic compound. What is its formula? :Calcium chloride is an ionic compound. What is its formula? Cl Ca 2 1 Ignore the + and - signs.


Calcium chloride is an ionic compound. What is its formula? :Calcium chloride is an ionic compound. What is its formula? Cl Ca 2 Ignore 1 as a subscript.


Calcium chloride is an ionic compound. What is its formula? :Calcium chloride is an ionic compound. What is its formula? Cl Ca 2 Simplify if necessary.


Calcium chloride is an ionic compound. What is its formula? :Calcium chloride is an ionic compound. What is its formula? Cl Ca 2 Already simplest formula.


Calcium chloride is an ionic compound. What is its formula? :Calcium chloride is an ionic compound. What is its formula? Cl Ca 2 Done!


Tin(IV) oxide is used to make mascara. What is its formula? :Tin(IV) oxide is used to make mascara. What is its formula?


Tin(IV) oxide is used to make mascara. What is its formula? :Tin(IV) oxide is used to make mascara. What is its formula? Write the ions’ symbols


Tin(IV) oxide is used to make mascara. What is its formula? :Tin(IV) oxide is used to make mascara. What is its formula? Sn Write the ions’ symbols 4+


Tin(IV) oxide is used to make mascara. What is its formula? :Tin(IV) oxide is used to make mascara. What is its formula? O Sn 2- Write the ions’ symbols 4+


Tin(IV) oxide is used to make mascara. What is its formula? :Tin(IV) oxide is used to make mascara. What is its formula? O Sn 2- Make the charge numbers into subscripts. 4+


Tin(IV) oxide is used to make mascara. What is its formula? :Tin(IV) oxide is used to make mascara. What is its formula? O Sn 2- Make the charge numbers into subscripts. 4+


Tin(IV) oxide is used to make mascara. What is its formula? :Tin(IV) oxide is used to make mascara. What is its formula? O Sn 2- Make the charge numbers into subscripts. 4+


Tin(IV) oxide is used to make mascara. What is its formula? :Tin(IV) oxide is used to make mascara. What is its formula? O Sn 2- Make the charge numbers into subscripts. 4+


Tin(IV) oxide is used to make mascara. What is its formula? :Tin(IV) oxide is used to make mascara. What is its formula? O Sn 2- Make the charge numbers into subscripts. 4+


Tin(IV) oxide is used to make mascara. What is its formula? :Tin(IV) oxide is used to make mascara. What is its formula? O Sn 2- Make the charge numbers into subscripts. 4+


Tin(IV) oxide is used to make mascara. What is its formula? :Tin(IV) oxide is used to make mascara. What is its formula? O Sn 2- Make the charge numbers into subscripts. 4+


Tin(IV) oxide is used to make mascara. What is its formula? :Tin(IV) oxide is used to make mascara. What is its formula? O Sn 2 Ignore + and - signs 4


Tin(IV) oxide is used to make mascara. What is its formula? :Tin(IV) oxide is used to make mascara. What is its formula? O Sn 2 Reduce formula to simplest terms. 4 1 2


Tin(IV) oxide is used to make mascara. What is its formula? :Tin(IV) oxide is used to make mascara. What is its formula? O Sn 1 Reduce formula to simplest terms. 2


Tin(IV) oxide is used to make mascara. What is its formula? :Tin(IV) oxide is used to make mascara. What is its formula? O Sn Ignore 1 as subscript. 2


Tin(IV) oxide is used to make mascara. What is its formula? :Tin(IV) oxide is used to make mascara. What is its formula? O Sn Done! 2


A very good gold ore is gold(III) telluride. What is its formula? :A very good gold ore is gold(III) telluride. What is its formula?


A very good gold ore is gold(III) telluride. What is its formula? :A very good gold ore is gold(III) telluride. What is its formula? What do you do first?


A very good gold ore is gold(III) telluride. What is its formula? :A very good gold ore is gold(III) telluride. What is its formula? Te Au Write the ions’ symbols. 3+ 2-


A very good gold ore is gold(III) telluride. What is its formula? :A very good gold ore is gold(III) telluride. What is its formula? Te Au Now what? 3+ 2-


A very good gold ore is gold(III) telluride. What is its formula? :A very good gold ore is gold(III) telluride. What is its formula? Te Au Criss cross the charges 3+ 2-


A very good gold ore is gold(III) telluride. What is its formula? :A very good gold ore is gold(III) telluride. What is its formula? Te Au Criss cross the charges 3+ 2-


A very good gold ore is gold(III) telluride. What is its formula? :A very good gold ore is gold(III) telluride. What is its formula? Te Au Criss cross the charges 3+ 2-


A very good gold ore is gold(III) telluride. What is its formula? :A very good gold ore is gold(III) telluride. What is its formula? Te Au Criss cross the charges 3+ 2-


A very good gold ore is gold(III) telluride. What is its formula? :A very good gold ore is gold(III) telluride. What is its formula? Te Au Criss cross the charges 3+ 2-


A very good gold ore is gold(III) telluride. What is its formula? :A very good gold ore is gold(III) telluride. What is its formula? Te Au Criss cross the charges 3+ 2-


A very good gold ore is gold(III) telluride. What is its formula? :A very good gold ore is gold(III) telluride. What is its formula? Te Au Criss cross the charges 3+ 2-


A very good gold ore is gold(III) telluride. What is its formula? :A very good gold ore is gold(III) telluride. What is its formula? Te Au Criss cross the charges 3+ 2-


A very good gold ore is gold(III) telluride. What is its formula? :A very good gold ore is gold(III) telluride. What is its formula? Te Au Ignore the + and - signs. 3 2


A very good gold ore is gold(III) telluride. What is its formula? :A very good gold ore is gold(III) telluride. What is its formula? Te Au Reduce to simplest ratio. 3 2


A very good gold ore is gold(III) telluride. What is its formula? :A very good gold ore is gold(III) telluride. What is its formula? Te Au Done! 3 2


Practice Silver Oxide :Practice Silver Oxide O Ag 2- + O Ag 2 D


Practice :Practice


Practice :Practice


Practice :Practice


Practice :Practice


Practice :Practice


Practice :Practice


Practice :Practice


Practice :Practice


Practice :Practice


Practice :Practice


Sodium Sulfide :Sodium Sulfide


Sodium Sulfide :Sodium Sulfide S Na 2- + S Na 2 B


Chromium III Sulfide :Chromium III Sulfide


Chromium III Oxide :Chromium III Oxide O Cr 2- 3+ O Cr 2 A 3


Iron III Bromide :Iron III Bromide


Iron III Bromide :Iron III Bromide Br Fe - 3+ Br Fe 3


Calcium Phosphide :Calcium Phosphide


Calcium Phosphide :Calcium Phosphide P Ca 3- 2+ P Ca 2 3


Titanium III Oxide :Titanium III Oxide


Titanium III Oxide :Titanium III Oxide O Ti 2- 3+ . O Ti 3 2


Iron III Iodide :Iron III Iodide


Iron III Iodide :Iron III Iodide I Fe - 3+ . I Fe 3


Barium Oxide :Barium Oxide


Barium Oxide :Barium Oxide O Ba 2- 2+ . O Ba 2 2


Barium Oxide :Barium Oxide O Ba 2- 2+ 10. O Ba 2 2 Reduce


Lesson 3 Review :Lesson 3 Review O Ba 2- 2+ 10. O Ba


Assignment :Assignment Complete Workbook 15 Homework: Read and study Chapter 3 – Section 3.