1. Chemical Bonds

2. IONIC BOND formed between two ions by the transfer of electrons

3. Ionic Bond Between atoms of metals and nonmetals
Form good conductors with high melting points.

4. COVALENT BOND bond formed by the sharing of electrons

5. Covalent Bond
Between two nonmetallic elements of similar electronegativity.
Low Melting Point
Poor Conductor

6. 2. Covalent bonds- Two atoms share one or more pairs of outer-shell electrons.
Oxygen Atom
Oxygen Atom
Oxygen Molecule (O2)

7. METALLIC BOND bond found in metals; sharing electrons freely holds metal atoms together very strongly

8. Metallic Bond Formed between atoms of metallic elements
Electron cloud around atoms
Good conductors, lustrous, very high melting points

9. Ionic Bonding Naming
1 )Metals(or the cation) go first and do not change their name when they become an ion
2) Non-metals(or the anion) go second and lose their ending and gain –ide
3) Write the atoms as ions with their charge
4) Cross them over to the bottom of the opposite atom. (Simplify if you can)

10. Ionic Bonding Sodium  Na Bromine  Br
Sodium Bromide  Na+1 + Br-1  NaBr
Magnesium  Mg Chlorine  Cl Magnesium Chloride Mg +2 + Cl-1 MgCl2

11. Ionic Bonding Calcium  Ca Oxygen  O
Calcium Oxide  Ca+2 + O-2  CaO Why?
Calcium Nitride 
Cesium Fluoride 
Barium Iodide 

12. Ionic Bonding with Transition Metals
Transition metals will tell you what their oxidation state is with roman numerals
Chromium (II)  Cr +2
Iron (III)  Fe +3
Lead (IV)  Pb +4
The only exceptions are Silver (+1), Zinc (+2), and Aluminum (+3)

13. Ionic Bonding with Transition Metals
Chromium (II) ChlorideCr+2 + Cl-1 CrCl2
Iron (III) Oxide 
Lead (IV) Oxide 
Zinc Nitride 
Silver Bromide 
Osmium (VI) Sulfide 

14. Ionic Bonding with Polyatomic Ions
Treat the polyatomic ion as one atom and bond like normal. Leave everything in the polyatomic ion as it started.
Calcium Nitrate  Ca+2 + NO3-1  Ca(NO3)2
The parenthesis tell you that there are 2 nitrates.

15. Ionic Bonding with Polyatomic ions
Sodium SulfateNa+1 + SO4-2Na2SO4
Calcium bromate
Strontium nitrite
Aluminum acetate
Zinc Carbonate

16. Summarize what you learned
What are the 3 types of bonds and what makes them different from one another?
What part of the atom is involved in bonding?
Summarize in your own words.