1. Teacher Notes for Science ATC lesson on Oct. 25, 2011 Lesson Objective: 10 th grade ATC students will use Lewis Electron Dot structures of various elements in order to show and create an ionic bond between a metal and a non metal Lesson Objective: 10 th grade ATC students will use Lewis Electron Dot structures of various elements in order to show and create an ionic bond between a metal and a non metal Please have the students go over the Power Point provided. On a notebook sheet of paper, they will draw and complete the charts shown on the presentation. Please have the students go over the Power Point provided. On a notebook sheet of paper, they will draw and complete the charts shown on the presentation.

2. Ionic Bonding Science ATC Lesson for Oct. 25, 2011

3. Essential Question: What is an ionic bond and how can one form an ionic compound using the Lewis electron dot structures to show the loss and gain of electrons? Definition: An ionic bond is the electrostatic force that holds oppositely charged particles together in an ionic compound. Definition: An ionic bond is the electrostatic force that holds oppositely charged particles together in an ionic compound. A binary ionic compound (which means it contains 2 elements) can be formed by combining a metal and a non-metal element. The metal will lose electrons as the nonmetal will gain electrons. A binary ionic compound (which means it contains 2 elements) can be formed by combining a metal and a non-metal element. The metal will lose electrons as the nonmetal will gain electrons. Source: Glencoe Chemistry Matter and Change pg. 215

4. ElementsLithiumOxygen Metal or Non-metal MetalNon-metal # of valence electrons 16 Lewis electron dot structure LiO Oxidation # or charge +1-2 Does it lose or gain electrons? Lose 1 Gain 2 Example

5. Diagram showing loss and gain of electrons between Lithium and Oxygen Li O Notice how oxygen is still missing 1 electron to complete the octet rule (eight valence electrons) Notice how oxygen is still missing 1 electron to complete the octet rule (eight valence electrons) You need another Lithium that will lose 1 electron to the oxygen You need another Lithium that will lose 1 electron to the oxygen Li

6. Your Turn Instructions: On your own piece paper you will need to copy and complete the charts found on the next two slides. At the end of each chart, draw a diagram showing the movement of electrons as in the previous example. Instructions: On your own piece paper you will need to copy and complete the charts found on the next two slides. At the end of each chart, draw a diagram showing the movement of electrons as in the previous example.

7. Set 1 ElementsSodiumSulfur Metal or Non- metal # of valence electrons Lewis electron dot structure Oxidation # or charge Does it lose or gain electrons? Diagram: Diagram:

8. Set 2 ElementsMagnesiumOxygen Metal or Non- metal # of valence electrons Lewis electron dot structure Oxidation # or charge Does it lose or gain electrons? Diagram: Diagram:

9. The End!!