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Chemistry Bonding Ionic Bonding

Chemistry Bonding Ionic Bonding. Do Now : Take out HW to check CALCULATORS NOT REQUIRED PERIODIC TABLES REQUIRED. An ionic bond is a bond formed from a transfer of electrons from one atom to another . (Metal + Nonmetal) Ex. sodium and chlorine Sodium loses one electron, becomes Na +

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Chemistry Bonding Ionic Bonding

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  1. ChemistryBondingIonic Bonding Do Now: Take out HW to check CALCULATORS NOT REQUIRED PERIODIC TABLES REQUIRED

  2. An ionic bond is a bond formed from a transfer of electrons from one atom to another. (Metal + Nonmetal) Ex. sodium and chlorine Sodium loses one electron, becomes Na+ Chlorine gains that electron, becomes Cl- The electric attraction between positive Na+and negative Cl-makes the ionic bond. Ionic Bonding

  3. Use the Lewis structure to show the transfer of electrons: Use brackets whenever an atom/compound is charged, put the charge in the upper-right corner (just like in a formula) Valence shells must either be empty or full, signifying a stable octet Example: CaCl2: Using Lewis Structures

  4. All the electrons must be accounted for, and each atom will have a noble gas configuration (which is stable). Ionic Bonding Lets do an example by combining calcium and phosphorus: Ca P

  5. Ionic Bonding Ca P

  6. Ionic Bonding Ca2+ P

  7. Ionic Bonding Ca2+ P Ca

  8. Ionic Bonding Ca2+ P 3- Ca

  9. Ionic Bonding Ca2+ P 3- Ca P

  10. Ionic Bonding Ca2+ P 3- Ca2+ P

  11. Ionic Bonding Ca Ca2+ P 3- Ca2+ P

  12. Ionic Bonding Ca Ca2+ P 3- Ca2+ P

  13. Ionic Bonding Ca2+ Ca2+ P 3- Ca2+ P 3-

  14. Ionic Bonding = Ca3P2 Formula Unit This is a chemical formula, which shows the kinds and numbers of atoms in the smallest representative particle of the substance. For an ionic compound, the smallest representative particle is called a: Formula Unit

  15. Crystalline solids - a regular repeating arrangement of ions in the solid Ions are strongly bonded together. Structure is rigid. High melting points Properties of Ionic Compounds

  16. Conducting electricity means allowing charges to move. In a solid, the ions are locked in place. Ionic solids are insulators. When melted, the ions can move around. Melted ionic compounds conduct. NaCl: must get to about 800 ºC. Dissolved in water, they also conduct (free to move in aqueous solutions) Do they Conduct?

  17. - Page 198 The ions are free to move when they are molten (or in aqueous solution), and thus they are able to conduct the electric current.

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