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Ionic Bonds

Ionic Bonds. 08/30 & 08/31. Catalyst. Take out your HW to be stamped . Mystery Elements: Forms an ion with a 2+ charge, found in milk. Forms an ion with a 2+ or 3+ charge, transition metal, atomic mass 50.9. Catalyst: Mystery Elements. Calcium. Calcium Carbonate Ca CO 3.

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Ionic Bonds

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  1. Ionic Bonds 08/30 & 08/31

  2. Catalyst • Take out your HW to be stamped. • Mystery Elements: • Forms an ion with a 2+ charge, found in milk. • Forms an ion with a 2+ or 3+ charge, transition metal, atomic mass 50.9.

  3. Catalyst: Mystery Elements • Calcium Calcium Carbonate Ca CO3

  4. Catalyst: Mystery Elements • 2. Vanadium

  5. Homework Baseball Answer the questions on a blank sheet of paper. Use your homework. • Ionic compounds form a structure called a… • Molecule • Crystal lattice • mixture • What forces hold together the ions in a salt?

  6. Homework Baseball Answers • Ionic compounds form a structure called a… • Crystal lattice • What forces hold together the ions in a salt? Attractive electrostatic forces between the positive cations and negative anions hold the ionic compound together. (HW Q 1)

  7. Homework Answers 8. (a) Chlorine and Bromine will not form an ionic bond because both are nonmetals (halogens) and both form negative ions (anions). • (b) Potassium and Helium will not form an ionic bond because Helium is a noble gas which is unreactive. • (c) Sodium and Lithium will not form an ionic bond because they are both metals (alkali metals) that form positive ions (cations). • 180: 6. (a) Sodium Oxide = Na2O • (b) Magnesium phosphide = Mg3P2 (c) Silver(I) Sulfide = Ag2S (d) Niobrium(V) chloride = NbCl5

  8. Objectives • I can predict the formula formed by any simple cation and anion. (i.e. Ca2+ + F- → CaF2) • I can predict the formula of an ionic compound based on its name (i.e. sodium nitride = Na3N) • CHALLENGE: I can use ionization energy data to explain ion formation.

  9. Agenda • Catalyst • Warmup: Find Your Ionic Bond! • Ionic Bond Practice Activity • Ionization Energy Graphing Challenge • Exit Ticket

  10. Find Your Ionic Bond! • Instructions: • You will get a card with an element symbol and the number of electrons the element must lose or gain to form a full valence shell (to meet the octet rule). • Your task is to find an ionic bond match in the class. • Example: If my card says “Ra - lose 2”, I would look for someone in class whose card says “gain 2”. • Once you find your match, come show Ms. Boon your cards. • HERE’S THE CATCH! THIS IS A SILENT ACTIVITY – FIND YOUR MATCH BY SHOWING YOUR CARD ONLY.

  11. Agenda • Catalyst • Warmup: Find Your Ionic Bond! • Ionic Bond Practice Activity • Ionization Energy Graphing Challenge • Exit Ticket

  12. 4 5 6 7 3 8 1 2 Write: groups tell us # valence electrons

  13. Ionic Bond Practice Activity • Work with the person next to you. • Materials: two sheets of ion puzzle pieces, one answer sheet, scissors, and glue stick. • Construct the ionic compounds listed on the answer sheet out of the puzzle pieces provided. • #1-5 Both the anion and cation puzzle pieces are provided. • #6-8 One puzzle piece is provided and you must use the octet rule to predict the rest of the compound. Draw the other half in. • Then write the formula of the compound formed. • Cleanup: Put all scraps of paper in the trash.

  14. Agenda • Catalyst • Warmup: Find Your Ionic Bond! • Ionic Bond Practice Activity • Ionization Energy Graphing Challenge • Exit Ticket

  15. Ionization Energy Investigation • Ionization energy is the energy required to remove an electron from an atom. • In this activity you will investigate the ionization energies of different atoms and use this information to explain and predict ion formation. • Follow the directions on the worksheet to graph the ionization energies for the 1st 20 elements. • Then, answer the 6 questions on a separate sheet of paper.

  16. Agenda • Catalyst • Warmup: Find Your Ionic Bond! • Ionic Bond Practice Activity • Ionization Energy Graphing Challenge • Exit Ticket

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