TYPES OF CHEMICAL BONDING. chemical bonds

Types of chemical bonding

1. Opening Prayer Lord, thank you for the opportunity to be in this class today. I trust your wisdom as I seek to work hard to make it secure and prosperous. May good practice be the cornerstone of everything I do. Come reveal new openings and areas for expansion and development. May each of us grow and flourish, creating great opportunity and provision for all those involved. Amen.

2. What is the atomic number of Silicon? Silicon Atomic number: 14

3. How many elements are there in this compound, Cu ( SO 4 ) 2 ? There are 3! Copper Sulfur Oxygen

4. How many atoms are there in each element in the chemical formula, Cu (SO 4 ) 2 ? Copper? Sulfur? Oxygen?

5. What is the valence electron of fluorine?

6. At the end of the lesson, I can describe how elements bond; I can explain how valence electrons relate to chemical bonds; and I will know the importance of chemical bonding in the different states of matter around.

7. TYPES OF BONDING

8. Types of Bonding IONIC BOND COVALENT BOND METALLIC BOND

9. IONIC BOND Between atoms of metals and nonmetals with very different electronegativity Bond formed by transfer of electrons Produce charged ions all states. Conductors and have high melting point. Examples: NaCl , CaCl 2 , K 2 O

10. Ionic Bonds: One Big Greedy Thief Dog!

11. 1). Ionic bond – electron from Na is transferred to Cl, this causes a charge imbalance in each atom. The Na becomes (Na + ) and the Cl becomes (Cl - ), charged particles or ions.

12. COVALENT BOND bond formed by the sharing of electrons

13. COVALENT BOND Between nonmetallic elements of similar electronegativity. Formed by sharing electron pairs Stable non-ionizing particles, they are not conductors at any state Examples; O 2 , CO 2 , C 2 H 6 , H 2 O, SiCl 4

14. Covalent Bonds

15. when electrons are shared equally NONPOLAR COVALENT BONDS H 2 or Cl 2

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

17. when electrons are shared but shared unequally POLAR COVALENT BONDS H 2 O

18. Polar Covalent Bonds: Unevenly matched, but willing to share.

19. - water is a polar molecule because oxygen is more electronegative than hydrogen, and therefore electrons are pulled closer to oxygen.

20. Metallic bond

21. METALLIC BOND - bond found in metals; holds metal atoms together very strongly

22. Metallic Bond Formed between atoms of metallic elements Electron cloud around atoms Good conductors at all states, lustrous, very high melting points Examples; Na, Fe, Al, Au, Co

23. Metallic Bonds: Mellow dogs with plenty of bones to go around.

24. metallic Bond, A Sea of Electrons

25. Any Questions?