Ionic Bonding/Naming

Objective Today I will be able to: Correctly name and write the formula for ionic compounds Describe the properties of ionic compounds Evaluation/ Assessment Informal assessment – Listening to group interactions as they complete the naming and writing formulas worksheets. Formal Assessment – Analyzing student responses to the exit ticket and naming/writing formulas worksheet Common Core Connection Build Strong Content Knowledge Look for and express regularity in repeated reasoning

Lesson Sequence Warm – Up Elaborate: Writing Ionic Formulas Practice Formal assessment Explain: Naming Ionic Compounds and Properties of Ionic Compounds Notes Elaborate: Naming Ionic Compounds Practice Explain: Ionic Compound Properties and Naming Covalent Compounds Evaluate: Exit ticket

Warm - Up Try to solve these problems without your ions sheet first! What is the symbol for the following ions? Sulfate Carbonate Phospate Write the ionic formula for the following ions Ca2+ PO43-

Objective Today I will be able to: Correctly name and write the formula for ionic compounds Describe the properties of ionic compounds

Homework Finish Classwork Lab Wednesday, Wear Closed Toe Shoes

Agenda Warm Up Collect HW Ionic Bonds Writing formulas Practice Properties and Naming Notes Naming formulas Practice Exit Ticket

Writing Ionic Formulas Practice – Pick 7 rows to complete! Review responses as a class, students will keep responses as a study tool Writing Ionic Formulas Practice – Pick 7 rows to complete!

Bonding

Why do elements form bonds? Every element wants a full outer energy level to satisfy the octet rule They achieve this by gaining, losing and sharing electrons

Ionic Bonds

Ionic Bonds Formed by the transfer of electrons from one atom to another Generally between a metal and a nonmetal Held together by electrostatic forces (opposite charges attracting)

Properties of Ionic Compounds Crystalline Solid at room temperature High melting and boiling points Soluble in water (when they dissolve in water they conduct electricity)

Properties of Ionic Compounds Cont. Ionic compounds are hard, rigid and brittle Crystalline Structure – crystal retains it shape until enough energy is applied to shift the positions and crack the crystal

Ionic Compounds Properties Cont. Molten state can also conduct electricity Solid ionic compound Molten ionic compound Ionic compound dissolved in water

Naming Ionic Compounds Standard Naming Rules Write the full name of the metal first Then write the second element, take off the ending and add the suffix –ide If the second ion is a polyatomic ion, use the full name of the ion Examples CaO – Calcium Oxide BaCl2 – Barium Chloride

Naming Ionic Compounds Exceptions Transition metals can have multiple oxidation numbers Standard naming rules apply but we need to account for the oxidation number Two Naming Systems Classical Stock

Use the Stock Method for transition metals Stock method - use a roman numeral Examples FeCl3 – Iron(III) Chloride FeCl2 – Iron (II) Chloride PbCl4 – Lead(IV) Chloride We will discuss an additional method called the classical method tomorrow Stock is more standard

Naming Ionic Compounds Practice Complete the worksheet. Please ask Ms. Ose for help with questions. Naming Ionic Compounds Practice

Exit Ticket What’s wrong with the following formula/ name of compound? Mg2Cl MgSO4 – Magnesium sulfide Baride Chlorine