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

• • • 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

• • • • • • 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

Warm - Up • Name the following compounds: – NO 2 – Al 2 O 3 – NCl 3 – KCl

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

Homework • • • Finish Mixed Practice Worksheet Wear Closed Toe Shoes Tomorrow!

Bonding Mini – Exam on Thursday – More details to come

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

Metallic Bonding Notes

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

Electron Movement in Metallic Bonds

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

Drawing Lewis Structures

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

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

Lewis Structures • C 1s 2 2s 2 2p 2 • C • • •

Lewis Structures • Examples Mg 1s 2 2s 2 2p 6 3s 2 Mg ••

Lewis Structures • Cl 1s 2 2s 2 2p 6 3s 2 3p 5

Lewis Structures   Cl 1s 2 Cl -1 1s 2 2s 2 2s 2 2p 6 2p 6 3s 2 3s 2 3p 5 3p 6 [ ] -1

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

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.

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