Chemical Bonding
Chemical Bond <ul><li>Attractive force that holds atoms together </li></ul><ul><li>Valence electrons contribute to chemica...
Bonds form = energy released Bonds break = energy required
Types of Bonding Ionic Covalent
Ionic Bonding <ul><li>Bonding between metals and non-metals </li></ul>
Covalent Bonding <ul><li>Bonding between non-metals </li></ul>
Remember Octet: Atoms seek stability of filled valence shell.
Ionic Bond <ul><li>Electrostatic attraction between cations and anions </li></ul><ul><li>Electrons are  transferred  from ...
Recall: Metals  lose  e -    cations Non-metals  gain  e -     anions
Compounds must be neutral;  total charge from cations must equal total charge from anions
Ex. What is the chemical formula of the compound made with sodium and oxygen?
Ex. What is the chemical formula of the compound made with sodium and oxygen? Na +   O 2- Na 2 O “ Sodium Oxide”
Ex. What is the chemical formula of the compound made with calcium and phosphorus?
Ex. What is the chemical formula of the compound made with calcium and phosphorus? Ca +2   P -3 Ca 3 P 2 “ Calcium Phosphi...
<ul><li>non-metals  share  valence electron pairs </li></ul><ul><li>NOT from ions </li></ul><ul><li>form molecules with no...
 
<ul><li>show valence electrons with dots </li></ul>Lewis Dot Structures
 
<ul><li>Formulas that show the arrangement of covalent compounds </li></ul><ul><li>Combine Lewis dot structures </li></ul>...
<ul><li>Show lone pairs (extra) with dots </li></ul><ul><li>Show shared pairs (bonds) with a line.   </li></ul>
Ex <ul><li>Diatomic hydrogen </li></ul><ul><li>Hydrochloric acid, HCl </li></ul><ul><li>Phosphorus trichloride, PCl 3 </li...
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  1. 1. Chemical Bonding
  2. 2. Chemical Bond <ul><li>Attractive force that holds atoms together </li></ul><ul><li>Valence electrons contribute to chemical bonds </li></ul><ul><li>Bonds form to increase stability (lower energy) </li></ul>
  3. 3. Bonds form = energy released Bonds break = energy required
  4. 4. Types of Bonding Ionic Covalent
  5. 5. Ionic Bonding <ul><li>Bonding between metals and non-metals </li></ul>
  6. 6. Covalent Bonding <ul><li>Bonding between non-metals </li></ul>
  7. 7. Remember Octet: Atoms seek stability of filled valence shell.
  8. 8. Ionic Bond <ul><li>Electrostatic attraction between cations and anions </li></ul><ul><li>Electrons are transferred from a metal to a non-metal </li></ul>
  9. 9. Recall: Metals lose e -  cations Non-metals gain e -  anions
  10. 10. Compounds must be neutral; total charge from cations must equal total charge from anions
  11. 11. Ex. What is the chemical formula of the compound made with sodium and oxygen?
  12. 12. Ex. What is the chemical formula of the compound made with sodium and oxygen? Na + O 2- Na 2 O “ Sodium Oxide”
  13. 13. Ex. What is the chemical formula of the compound made with calcium and phosphorus?
  14. 14. Ex. What is the chemical formula of the compound made with calcium and phosphorus? Ca +2 P -3 Ca 3 P 2 “ Calcium Phosphide”
  15. 15. <ul><li>non-metals share valence electron pairs </li></ul><ul><li>NOT from ions </li></ul><ul><li>form molecules with no net charge </li></ul>Covalent Bond
  16. 17. <ul><li>show valence electrons with dots </li></ul>Lewis Dot Structures
  17. 19. <ul><li>Formulas that show the arrangement of covalent compounds </li></ul><ul><li>Combine Lewis dot structures </li></ul>Structural Formulas
  18. 20. <ul><li>Show lone pairs (extra) with dots </li></ul><ul><li>Show shared pairs (bonds) with a line. </li></ul>
  19. 21. Ex <ul><li>Diatomic hydrogen </li></ul><ul><li>Hydrochloric acid, HCl </li></ul><ul><li>Phosphorus trichloride, PCl 3 </li></ul>
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