Electrons and Chemical Bonding Day 2

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Electrons and Chemical Bonding Day 2

  1. 1. Today in Science <ul><li>You Will Need: </li></ul><ul><ul><li>Pencil, Text Book- Periodic Table, Colored Pencils </li></ul></ul><ul><ul><li>½ sheet of paper – Bookshelf </li></ul></ul><ul><ul><li>3. Electrons and Chemical Bonding - 2 pages-4 sides (Picked up yesterday) </li></ul></ul><ul><ul><li>4. Test #4 Signed & Corrected Due Today </li></ul></ul>
  2. 2. Do You Remember? <ul><li>The substances on the right side of a chemical equation are called this….. </li></ul><ul><li>Metals and Nonmetals usually form this kind of bond? </li></ul><ul><li>Will Potassium become a cation or anion? Why? </li></ul><ul><li>The only way to balance a chemical equations is to change the ______________. </li></ul><ul><li>The type of substance that starts or speeds up a chemical reaction is a __________. </li></ul>
  3. 3. Do You Remember? <ul><li>The sublimation of carbon dioxide…is this a chemical or physical change? Why? </li></ul><ul><li>The one element all living things on earth share in their make-up is__________. </li></ul><ul><li>What does the Law of Conservation of Mass state? </li></ul><ul><li>How many more bonds does Sulfur need to have a full outer shell? </li></ul><ul><li>What subatomic particle determines the charge of an atom? </li></ul>
  4. 4. Let’s Make Some Ionic Compounds <ul><li>Go to Learning Point </li></ul><ul><li>Select “ Daily Assignments ” </li></ul><ul><li>Select this week: Jan 2 nd -6 th </li></ul><ul><li>Select Creating Ionic Compounds </li></ul><ul><li>REMEMBER : The reason these atoms are bonding is because they are oppositly charged. Positive to Negative Attraction. </li></ul><ul><li>Metals – Give away electrons </li></ul><ul><li>NonMetals – Take electrons </li></ul>
  5. 5. Forming Sodium Chloride Page 233
  6. 6. Explain What is Happening <ul><li>Why does Sodium become an Ion? Positive or Negative? Why? </li></ul><ul><li>Why does Chlorine become an Ion? Positive or Negative? Why? </li></ul><ul><li>Why do Sodium and Chlorine bond? </li></ul><ul><li>What is the overall charge of the compound? </li></ul><ul><li>Does NaCl have the same characteristics as Na and Cl or does the compound have its own unique characteristics? Explain. </li></ul>
  7. 7. Covalent Bonding <ul><li>Share pairs of electrons </li></ul><ul><li>More often between Nonmetals </li></ul>
  8. 8. Covalent Bonding <ul><li>Low Melting and Boiling points </li></ul><ul><li>Free flowing but can be brittle </li></ul><ul><li>Form molecules </li></ul><ul><li>Do Not have a specific shape (more flexible) </li></ul>C 6 H 10 O 5 C 12 H 22 O 11
  9. 9. Forming Water Molecule Page 237
  10. 10. Ionic or Covalent <ul><li>CO 2 </li></ul><ul><li>H 2 O </li></ul><ul><li>NaCl </li></ul><ul><li>CH 4 </li></ul><ul><li>C 6 H 12 O 6 </li></ul><ul><li>KCl </li></ul><ul><li>KI </li></ul>Covalent Ionic Covalent Ionic Covalent Covalent Ionic NonMetals NonMetals NonMetals NonMetals Metal & NonMetal Metal & NonMetal Metal & NonMetal Compound Covalent or Ionic Why?
  11. 11. Remember <ul><li>Signed & Corrected Test #4 – Due today </li></ul><ul><li>Complete Electrons & Chemical Bonding - Due tomorrow </li></ul>Homework

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