Periodic Table Exam, STEM Fair Rubric, Ionic Compounds Lab

Objective – Today I will be able to: Demonstrate knowledge of the periodic table on an exam Correctly name and write the formula for ionic Apply writing ionic formulas to a lab to determine the compound that forms when two ions react. Describe the properties of ionic solids Evaluation/ Assessment – Informal assessment – Listening to group interactions as they complete the lab and review the ionic compounds practice – Formal Assessment – Analyzing student responses to the exit ticket, lab and periodic table exam Common Core Connection – Build Strong Content Knowledge – Look for and express regularity in repeated reasoning – Look for and make use of structure

Lesson Sequence Warm – Up Evaluate: Periodic Table Exam – Formal assessment Explain: STEM Fair Final Paper Expectations Elaborate: Naming Ionic Compounds Practice – Formal assessment/ Informal Assessment Explore/Elaborate: Ionic Compounds lab – Informal assessment Explain: Ionic Compound Properties Evaluate: Exit ticket – Formal assessment

Warm - Up Which element has the larger radius? Explain. – Be or O Which element has the smaller electronegativity? Explain. – Sr or Ra Which element has the greater ionization energy? Explain. – S or Cl

Objective Today I will be able to: – Demonstrate knowledge of the periodic table on an exam – Correctly name and write the formula for ionic – Apply writing ionic formulas to a lab to determine the compound that forms when two ions react. – Describe the properties of ionic solids

Homework Finish Lab STEM Fair – Final Research Paper due Monday December 17 – In Class Presentations Wednesday January 23

Agenda Warm – up Periodic Table Exam Review STEM Fair Final Paper Rubric Review naming and writing formulas for ionic bonds Ionic Compounds Lab Ionic bond properties Exit Ticket

Periodic Table Exam When you finish your exam bring your exam, answer sheet and periodic table to Ms. Ose. Take out your writing ionic formulas practice from last class and finish any problems that you did not complete.

Review STEM Fair Final Paper Rubric

Review Naming Ionic Compounds Worksheet Students will put responses on the board. We will discuss answers and make corrections as a class.

Writing formulas – Two Methods Snap it Together Method Na 1+ Cl 1- NaCl Criss-Cross Method

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 – BaCl 2 – 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 use a roman numeral – Examples FeCl 3 – Iron(III) Chloride FeCl 2 – Iron (II) Chloride PbCl 4 – Lead(IV) Chloride

Ionic Compounds Lab Complete the lab and the questions

Lab Safety Must wear goggles, aprons and closed toe shoes to participate If you spill a chemical on your hand, just rinse it off under water for a few minutes Dispose of compounds down the drain Make sure you clean the plates really well!

Properties of Ionic Compounds Notes

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

Exit Ticket Write the formula and name for the compound that results when you mix the following ions: – Ba 2+, SO 4 2- – Mg 2+, PO 4 3- – Al 3+, O 2-