Metallic Bonding, Lewis Structures, Mixed Ionic and Covalent Bond Practice

1. Metallic Bonding, Lewis Structures, Mixed Ionic and Covalent Bond Practice

2. Objective • Today I will be able to: • Explain the movement of electrons in metallic bonds • Draw Lewis Structures to represent the valance electrons in an atom • Correctly name and write formulas for ionic and covalent compounds • Evaluation/ Assessment • Informal assessment – Listening to group interactions as they complete the ionic and covalent Lewis structure practice and the naming compounds practice. • Formal Assessment – Analyzing student responses to the lab questions and the naming ionic and covalent compounds practice. • Common Core Connection • Build Strong Content Knowledge • Reason abstractly and quantitatively • Look for and express regularity in repeated reasoning

3. Lesson Sequence • Warm – Up • Explain: Metallic Bonding • Explain: Lewis Structure Notes • Elaborate: Illustrating Ionic/Covalent Compounds with Lewis Structures Practice • Formal assessment • Elaborate: Ionic and Covalent Mixed Practice • Formal assessment • Evaluate: Exit Ticket • Formal assessment

4. Warm - Up • Name the following compounds: • NO2 • Al2O3 • NCl3 • KCl

5. Objective • Today I will be able to: • Explain the movement of electrons in metallic bonds • Draw Lewis Structures to represent the valance electrons in an atom • Correctly name and write formulas for ionic and covalent compounds

6. Homework • Finish Mixed Practice Worksheet • Wear Closed Toe Shoes Tomorrow! • Bonding Mini – Exam on Thursday • More details to come

7. Agenda • Warm – Up • Pass out Study Guide • Metallic Bonding and Lewis Structure Notes • Lewis Structure Practice • Ionic and Covalent Naming Mixed Practice • Exit Ticket

8. Metallic Bonding Notes

9. Metallic Bonds • Loosely bound valance electrons which are called mobile electrons because they are free to move around • delocalized • Allow the transition metals and rare earth metals to have multiple charges

10. Electron Movement in Metallic Bonds

11. Properties of Metallic Bonds • Solids at room temperature (except Mercury) • Ductile • Malleable • Good conductors

12. Drawing Lewis Structures

13. Lewis Structures • Visual representation of the number of valance electrons in an atom

14. How to draw Lewis structures • Write the symbol of the element • Pretend there are 4 sides • Use dots to represent the valance electrons around the symbol • Place one dot on each side of the element before you form pairs • Exception: If there are only 2 valance electrons, they both go on the same side

15. Lewis Structures • C 1s2 2s2 2p2 • • • C •

16. Lewis Structures • Examples Mg 1s2 2s2 2p6 3s2 • Mg •

17. Lewis Structures • Cl 1s2 2s2 2p6 3s2 3p5 • • • • Cl • • •

18. Lewis Structures • Cl 1s2 2s2 2p6 3s2 3p5 • Cl-1 1s2 2s2 2p6 3s2 3p6 • • -1 [ • ] • • Cl • • •

19. Illustrate Ionic and Covalent Bonds with Lewis Structures Complete the worksheet using the examples. Ask Ms. Ose if you need help with questions.

20. Ionic and Covalent Compounds Practice Complete the practice with the people around you. Whatever you do not finish in class will become homework. We will review next class.

21. Exit Ticket • Draw Lewis Structures for the following elements: • F • Al • He • C • F-1