1. Bell ringer- pick up your quiz from yesterday.
Get out paper and pencil. Copy these notes.
Here we go, 6 step cross-over time.
Not a dance :) It's how we write ionic formulas
1. Begin by identifying the metal and nonmetal.
2. Write symbols
3. Write charges (for transition metals, the charge of the metal is the number in the () after the metal name.
4. Cross-over the charges from top to bottom
5. Remove the charges
6. Simplify the numbers and remove 1's

2. 1. Begin by identifying the metal and nonmetal.
For the following compounds, give the formulas
sodium phosphide
aluminum sulfide
beryllium chloride
calcium oxide
1. Begin by identifying the metal and nonmetal.
2. Write symbols
3. Write charges (for transition metals, the charge of the metal is the number in the () after the metal name.
4. Cross-over the charges from top to bottom
5. Remove the charges
6. Simplify the numbers and remove 1's

4. 1. Begin by identifying the metal and nonmetal.
potassium sulfide
Calcium
fluoride
rubidium
arsenide
strontium
selenide
1. Begin by identifying the metal and nonmetal.
2. Write symbols
3. Write charges (for transition metals, the charge of the metal is the number in the () after the metal name.
4. Cross-over the charges from top to bottom
5. Remove the charges
6. Simplify the numbers and remove 1's

5. Barium
chloride
Cesium carbide

7. 1. Begin by identifying the metal and nonmetal.
For the following compounds, give the formulas
magnesium nitrate
calcium phosphate
ammonium sulfate
silver cyanide
1. Begin by identifying the metal and nonmetal.
2. Write symbols
3. Write charges (for transition metals, the charge of the metal is the number in the () after the metal name.
4. Cross-over the charges from top to bottom
5. Remove the charges
6. Simplify the numbers and remove 1's

8. Bell ringer- get out homework and check against screen
22.) Na3P
23.) Mg(NO3)2
25.) Ca3(PO4)2
29.) BeCl2
35.) CaO
36.) Mg(C2H3O2)2
39.) BaO

10. 1. Begin by identifying the metal and nonmetal.
For the following compounds, give the formulas
lead (II) sulfite
copper (I) arsenide
iron (III) oxide
vanadium (V) phosphate
1. Begin by identifying the metal and nonmetal.
2. Write symbols
3. Write charges (for transition metals, the charge of the metal is the number in the () after the metal name.
4. Cross-over the charges from top to bottom
5. Remove the charges
6. Simplify the numbers and remove 1's

13. Bell ringer

14. We will use the reverse of the 6 step cross-over to do this.
1. Separate the 2 elements or polyatomic ions.
2. Add 1's to elements with no number.
3. Cross-over bottom to top.
4. Add charges- 1st one is +, 2nd one is -
5. Make sure the charges match the expected charges in the PT or PAL.
6. Write the name. Metal stays the same, nonmetal drops its ending
and adds -ide. For transition metals, change the charge to roman numerals, place in parentheses following the metal name.
[Fe2+ would change to Iron (II) ]

16. Name the following ionic compounds,
please note that no Roman Numerals are needed.
Zn(OH)2
KCl
BeSO4
Al2S3
NaOH
Mg3P2
MgBr2
We will use the reverse of the 6 step cross-over to do this.
1. Separate the 2 elements or polyatomic ions.
2. Add 1's to elements with no number.
3. Cross-over bottom to top.
4. Add charges- 1st one is +, 2nd one is -
5. Make sure the charges match the expected charges in the PT or PAL.
6. Write the name. Metal stays the same, nonmetal drops its ending
and adds -ide. For transition metals, change the charge to roman numerals, place in parentheses following the metal name.
[Fe2+ would change to Iron (II) ]

17. Formulas Lesson 4_ Transition Metals Part 2.mp4

18. Roman Numerals are needed here, because these contain Transition Metals.
FeCl3
PbO
FeCl2
CrF2
We will use the reverse of the 6 step cross-over to do this.
1. Separate the 2 elements or polyatomic ions.
2. Add 1's to elements with no number.
3. Cross-over bottom to top.
4. Add charges- 1st one is +, 2nd one is -
5. Make sure the charges match the expected charges in the PT or PAL.
6. Write the name. Metal stays the same, nonmetal drops its ending
and adds -ide. For transition metals, change the charge to roman numerals, place in parentheses following the metal name.
[Fe2+ would change to Iron (II) ]

20. Binary Ionic Compounds
Binary Ionic Compounds part 2
Polyatomic part 1
Polyatomic part 2