1. Notes- Covalent Bonds 9/24/18

2. 2 Types of Forces
Intramolecular Force (stronger) holds elements together to make compounds, ex.)Ionic and Covalent
Intermolecular Force (weaker) holds molecules together to form solids, liquids, and gases, ex.)Hydrogen bond.

3. COVALENT BOND bond formed by the sharing of electrons between two nonmetals.

4. 2 Types of Covalent Bonds
Polar Covalent Bond – electrons are unevenly shared
Nonpolar Covalent Bond – electrons are evenly shared (diatomics)

5. Non PolarCovalent Bonds
Equal Sharing of electrons
H-H

8. O O N N DOUBLE bond TRIPLE bond atoms that share two e- pairs (4 e-)
atoms that share three e- pairs (6 e-)
N N

10. when electrons are shared but shared unequally
POLAR COVALENT BONDS
when electrons are shared but shared unequally
H2O

11. - water is a polar molecule because electrons are pulled closer to oxygen.

12. Water is a bent moleculeH H

13. Intermolecular Forces:holds molecules together, weaker force
EX.)Hydrogen Bond – when H bonds to N, O, or F of another molecule
Important in DNA (genetic material), proteins, and water molecules

14. Hydrogen “Bonding” Strong polar attraction
Like magnets
Occurs ONLY between H of one molecule and N, O, F of another
H “bond”

15. Intermolecular Force – between different molecules
Example: an interstate highway runs between different states

16. Covalent bond
Hydrogen bond

17. Water

18. Nomenclature-naming covalent Compounds