ObjecQve. Class Work 12/13/ Ionic Bonding. SWBAT identify, describe and name ionic compounds.
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1 Unit 5 SPARK (Take out your textbook work!) 1. Name the following compounds: a. MgCl b. NaF c. SrO NAME Class Work 12/13/ Ionic Bonding ObjecQve SWBAT identify, describe and name ionic compounds.
2 Agenda: SPARK/ObjecQve Review chemical formulas Lesson PracQce Exit Ticket Homework Objective: SWBAT explain trends in electronegativity
3 Thought Provoker LeVers : Words :: Elements :?? Chemical Formulas are the language of chemistry!
4 Formula Review! Paper Clip AcQvity! Subscript number of atoms in a compound that is chemically bonded Ex. The 2 in H 2 O Coefficient the total number of compounds Ex. The 3 in 3NaCl
5 BuVerfly clips = X Big paper clips = Y Small paper clips = Z Formula Review! Paper Clip AcQvity!
6 CreaQng a model: Let s make, Z 2 Y Formula Review! Paper Clip AcQvity! What about 2X? And X(YZ) 2?
7 Formula Review! Paper Clip AcQvity! Using the materials in front of you, create the following models: 1. X 2 Y 4 2. ZX Y 4. X 2 Z 5. X 2 (YZ 3 ) 3 Raise your hand to get your models approved!
8 Formula Review! Paper Clip AcQvity! Create at least five models (add more to the back!) and quiz your partner! Turn in this sheet when you are finished and make sure the following words are in your glossary: 1. Ionic Radius 2. Ionic Compound 3. Covalent Compound
9 Review of ElectronegaQvity What is electronegaqvity in your own words?
10 ElectronegaQvity The tendency of an atom to a.ract electrons to itself when it is bonded to another atom
11 ElectronegaQvity and Bonding The greater the difference in electronegaqvity, the more likely a transfer of electrons or an ionic bond will occur. Type of Bond Difference in Electronega;vity Ionic >2.0 Covalent 2.0
12 ElectronegaQvity and Bonding What is the difference in electronegaqvity of Li and F? Li and F form a bond because What is the difference in electronegaqvity of H and S? H and S form a bond because
13 Use Table S to determine what kind of bond will form between the following atom pairs: 1) H and H 2) H and F 3) H and C 4) Rb and F 5) C and O
14 IONIC Compounds CATIONS Typically formed by metals. Naming Rule: element ion ANIONS Typically formed by nonmetals. Naming Rule: root + ide ion
15 Naming Ionic Compounds What compound would Lithium and Fluoride form? Li + is called a Lithium ion F - is called a Fluoride ion The ionic compound LiF is called Lithium Fluoride.
16 KEY IDEAS! Metals lose electrons, nonmetals gain electrons. Electrons lost must equal electrons gained. Total charge of the compound will equal zero.
17 Ionic Compound Naming #1 Lewis Dot Method 1) Find electron config 2) Determine electrons lost/gain 3) Write chemical equaqon in Lewis Dot Diagrams Ex. Potassium and Oxygen
18 Your Turn! 1) Find electron config 2) Determine electrons lost/gain 3) Write chemical equaqon in Lewis Dot Diagrams Ex. Calcium and Chlorine
19 Ionic Compound Naming #2 Criss Cross Method 1. Find the charges of the ions (use your periodic tables and reference sheet!) 2. CRISS CROSS! Example: Aluminum Oxide Al 3+ O 2- Al 2 O 3 Al 2 O 3 Name of cation Name of anion Aluminum Oxide
20 Your Turn! Ex. Potassium and Oxygen
21 Ionic Compound Naming #1 Box Method! Find the chemical formula of Potassium and chloride
22 Ionic Compound Naming #1 Box Method! Find the chemical formula of Magnesium and Bromine
23 PracQce #1 IdenQfy the formula for Magnesium Nitride.
24 PracQce #2 IdenQfy the formula for Potassium Bromide.
25 CFU! For the following ionic compounds: write the name of the compound for: BaCl 2 write the formula of the compound for: Sodium Oxide
26 5.2 Independent Work! PracQce problems on your own.
27 Exit Ticket Write the formula for a compound formed between: 1) Rb and O 2) Ba and N 3) Why is NaCl a ionic compound?
28 HOMEWORK Finish 5.2 independent pracqce sheet! Objective: SWBAT demonstrate mastery of Unit 4 topics!
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