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Bond Energies thermo December 19, 2017

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Presentation on theme: "Bond Energies thermo December 19, 2017"— Presentation transcript:

1 Bond Energies thermo December 19, 2017
Learning Target: I CAN Apply concepts of Lewis Dot structures, bonding, and enthalpy calculations to determine bond energies in reactions

2 December 19, 2017 Do Now (4 min) Learning target: I CAN Apply concepts of Lewis Dot structures, bonding, and enthalpy calculations to determine bond energies in reactions Do Now (Answer on your Do Now Sheet): Draw the molecular structures for the following compounds in the reaction: 2H2 + O2  2H2O Learning Target: I CAN Apply concepts of Lewis Dot structures, bonding, and enthalpy calculations to determine bond energies in reactions

3 announcements Afterschool tutoring – every Wednesday 3 – 4:30 PM
December 19, 2017 announcements Afterschool tutoring – every Wednesday 3 – 4:30 PM Lab report Final draft due today 12/18 Thermo exam: Thursday 12/21 Mastering Chem CH19 – HW due tues 12/19 night Mastering Chem CH 20 – HW due Fri 12/22 night Learning Target: I CAN Apply concepts of Lewis Dot structures, bonding, and enthalpy calculations to determine bond energies in reactions

4 Lewis Dot structures Draw lewis dot structures for atoms: Cl Na O C F
December 19, 2017 Lewis Dot structures Draw lewis dot structures for atoms: Cl Na O C F Learning Target: I CAN Apply concepts of Lewis Dot structures, bonding, and enthalpy calculations to determine bond energies in reactions

5 December 19, 2017 Lewis Dot structures Draw lewis dot structures for ions: Cl- Na+ O2- C4- F- Learning Target: I CAN Apply concepts of Lewis Dot structures, bonding, and enthalpy calculations to determine bond energies in reactions

6 December 19, 2017 Lewis Dot structures Draw lewis dot structures for the most common ions: S Mg B N Li Learning Target: I CAN Apply concepts of Lewis Dot structures, bonding, and enthalpy calculations to determine bond energies in reactions

7 December 19, 2017 Lewis Dot structures Draw lewis dot structures for the molecules: H2O H2O2 Learning Target: I CAN Apply concepts of Lewis Dot structures, bonding, and enthalpy calculations to determine bond energies in reactions

8 December 19, 2017 Lewis Dot structures Draw lewis dot structures for the molecules: NH3 NH4+ NO3- NO- Learning Target: I CAN Apply concepts of Lewis Dot structures, bonding, and enthalpy calculations to determine bond energies in reactions

9 December 19, 2017 Lewis Dot structures Draw lewis dot structures for the molecules: CH4 CO32- CO2 CO Learning Target: I CAN Apply concepts of Lewis Dot structures, bonding, and enthalpy calculations to determine bond energies in reactions

10 December 19, 2017 Lewis Dot structures Draw lewis dot structures for the molecules: O2 N2 Cl2 O3 Learning Target: I CAN Apply concepts of Lewis Dot structures, bonding, and enthalpy calculations to determine bond energies in reactions

11 December 19, 2017 Lewis Dot structures Problem 1: Enthalpy change for the reaction: H-H + Cl-Cl  2 H-Cl Learning Target: I CAN Apply concepts of Lewis Dot structures, bonding, and enthalpy calculations to determine bond energies in reactions

12 Lewis Dot structures Problem 2: Enthalpy change for the reaction:
December 19, 2017 Lewis Dot structures Problem 2: Enthalpy change for the reaction: Learning Target: I CAN Apply concepts of Lewis Dot structures, bonding, and enthalpy calculations to determine bond energies in reactions

13 December 19, 2017 Lewis Dot structures Problem 6: Enthalpy change for the reaction: H2 (g) + CO2 (g)  H2O (g) + CO (g) Learning Target: I CAN Apply concepts of Lewis Dot structures, bonding, and enthalpy calculations to determine bond energies in reactions

14 December 19, 2017 Pairwork Work in pairs Show all work on a separate sheet of paper, including all lewis dot structures, and calculations Due at the end of the period! Learning Target: I CAN Apply concepts of Lewis Dot structures, bonding, and enthalpy calculations to determine bond energies in reactions

15 December 19, 2017 Exit ticket (3 min) On a separate sheet of paper: What does it say about the stability of the reactants / products when a reaction is endothermic? Learning Target: I CAN Apply concepts of Lewis Dot structures, bonding, and enthalpy calculations to determine bond energies in reactions


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