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Tuesday, Nov. 19, 2013

Tuesday, Nov. 19, 2013. AGENDA: 1 – Bellringer 2 – Review homework 3 – CN: Predicting chemical formulas 4 – Practice skills (naming, identify ions, counting atoms, and naming formulas). Today’s Objective: Students will be able to predict the chemical formula (given a name) Homework

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Tuesday, Nov. 19, 2013

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  1. Tuesday, Nov. 19, 2013 AGENDA: 1 – Bellringer 2 – Review homework 3 – CN: Predicting chemical formulas 4 – Practice skills (naming, identify ions, counting atoms, and naming formulas) Today’s Objective: Students will be able to predict the chemical formula (given a name) Homework • WS… Naming Formulas • Toon Doo Peer Review tomorrow

  2. Tuesday, Nov. 19, 2013 Bell Ringer: Calculate the number of atoms of each element present: 2 MgCl2 Objective: Students will be able to predict the chemical formula (given a name).

  3. 4 MINUTES REMAINING…

  4. Tuesday, Nov. 19, 2013 Bell Ringer: Calculate the number of atoms of each element present: 2 MgCl2 Objective: Students will be able to predict the chemical formula (given a name).

  5. 3 MINUTES REMAINING…

  6. Tuesday, Nov. 19, 2013 Bell Ringer: Calculate the number of atoms of each element present: 2 MgCl2 Objective: Students will be able to predict the chemical formula (given a name).

  7. 2 MINUTES REMAINING…

  8. Tuesday, Nov. 19, 2013 Bell Ringer: Calculate the number of atoms of each element present: 2 MgCl2 Objective: Students will be able to predict the chemical formula (given a name).

  9. 1minute Remaining…

  10. Tuesday, Nov. 19, 2013 Bell Ringer: Calculate the number of atoms of each element present: 2 MgCl2 Objective: Students will be able to predict the chemical formula (given a name).

  11. 30 Seconds Remaining…

  12. Tuesday, Nov. 19, 2013 Bell Ringer: Calculate the number of atoms of each element present: 2 MgCl2 Objective: Students will be able to predict the chemical formula (given a name).

  13. BELL-RINGER TIME IS UP!

  14. Tuesday, Nov. 19, 2013 AGENDA: 1 – Bellringer 2 – Review homework 3 – CN: Predicting chemical formulas 4 – Practice skills (naming, identify ions, counting atoms, and naming formulas) Today’s Objective: Students will be able to predict the chemical formula (given a name) Homework • WS… Naming Formulas • Toon Doo Peer Review tomorrow

  15. Tuesday, Nov. 19, 2013 (answer it) Objective: Students will be able to predict the chemical formula (given a name). Bell Ringer: Calculate the number of atoms of each element present: 2 MgCl2 Total atoms: = subscript * coefficient Mg = 1 * 2 = 2 atoms Mg Cl = 2 * 2 = 4 atoms Cl

  16. Tuesday, Nov. 19, 2013 (answer it) Objective: Students will be able to predict the chemical formula (given a name). Bell Ringer: Calculate the number of atoms of each element present: 2 MgCl2 Total atoms: Mg = 2 Cl = +4 6 total atoms in 2 molecules MgCl2

  17. REVIEW: Ionic Bond • Between atoms of metals and nonmetals with very different electronegativity • Bond formed by transfer of electrons • Produce charged ions all states. Conductors and have high melting point. • Examples; NaCl, CaCl2, K2O

  18. REVIEW: Formation of Sodium Ion Sodium atom Sodium ion Na  – e Na + 2-8-1 2-8 ( = Ne) 11 p+ 11 p+ 11 e- 10 e- 01+

  19. Review: Some Typical Ions with Positive Charges (Cations) Group 1 Group 2 Group 13 H+ Mg2+ Al3+ Li+ Ca2+ Na+ Sr2+ K+ Ba2+

  20. Learning Check A. Number of valence electrons in aluminum 1) 1 e- 2) 2 e- 3) 3 e- B. Change in electrons for octet 1) lose 3e- 2) gain 3 e- 3) gain 5 e- C. Ionic charge of aluminum 1) 3- 2) 5- 3) 3+

  21. Solution A. Number of valence electrons in aluminum 3) 3 e- B. Change in electrons for octet 1) lose 3e- C. Ionic charge of aluminum 3) 3+

  22. Review: Fluoride Ion unpaired electron octet 1 - : F  + e: F :  2-7 2-8 (= Ne) 9 p+ 9 p+ 9 e- 10 e- 0 1 - ionic charge

  23. Review: Covalent Bond • Between nonmetallic elements of similar electronegativity. • Formed by sharing electron pairs • Stable non-ionizing particles, they are not conductors at any state • Examples; O2, CO2, C2H6, H2O, SiC

  24. Naming Chemical Formulas

  25. Now we will practice (on ELMO)

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