9 23 09

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class notes from chemistry 9-23-09

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9 23 09

  1. 1. Introduction to Chapter 5 Naming Compounds<br />9/23/09<br />
  2. 2.
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  4. 4. Two Types of Compounds<br />Type 1 Molecular compounds<br />Made by joining nonmetal atoms together into molecules.<br />Type 2 Ionic compounds<br />Made by combining two ions.<br />Cation and an anion. +/-<br />Metals and Nonmetals<br />
  5. 5. Two Types of Compounds<br /><ul><li>Ionic Compounds (cont.)</li></ul>The electrons lost by the cation are gained by the anion<br />The cation and anions surround each other<br />Smallest piece is a FORMULA UNIT<br />
  6. 6. Chemical Formulas<br />Shows the kind and number of atoms in the smallest piece of a substance<br />Molecular formula- number and kinds of atoms in a molecule<br />CO2<br />C6H12O6<br />
  7. 7. Formula Unit<br />The smallest whole number ratio of atoms in an ionic compound<br />Ions surround each other so you can’t say which is hooked to which<br />
  8. 8. Charges on ions<br />For most of the Group A elements, the Periodic Table can tell what kind of ion they will form from their location<br />Elements in the same group have similar properties<br />Including the charge when they are ions <br />
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  10. 10. What about the others?<br />What about the transition metals<br />They can form more than one type of ion<br />We have to figure those out some other way<br />More on this later<br />
  11. 11. Naming ions<br />We will use the systematic way<br />Cation- if the charge is always the same (Group A) just write the name of the metal.<br />Na+1Sodium<br />Ca+2Calcium<br />Al+3Aluminum<br />Li+1 Lithium<br />
  12. 12. Write Formulas for these<br />Potassium ion<br />Magnesium ion <br />Calcium ion<br />Cesium ion<br />Barium ion<br />Hydrogen ion<br />
  13. 13. Naming Anions<br />Anions are always the same<br />Change the element ending to -ide<br />F-1 Fluorine<br />
  14. 14. Naming Anions<br />Anions are always the same<br />Change the element ending to -ide<br />F-1 Fluoride<br />
  15. 15. Name these<br />Cl-1<br />N-3<br />Br-1<br />O-2<br />I-<br />Chloride<br />Nitride<br />Bromide<br />Oxide<br />Iodide<br />
  16. 16. Write these<br />Sulfide ion<br />iodide ion<br />phosphide ion<br />Strontium ion<br />

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