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Jan uary 10, 2014

Jan uary 10, 2014. AGENDA: 1 – Bell Ringer 2 – Review HW 3 – Cornell Notes: Balancing Chemical Reactions 4 – Practice 5 – BrainPop : Chemical Equations. Today’s Goal: Students will be able to balance chemical reactions. Homework Balancing Chemical Reactions Practice Problems

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Jan uary 10, 2014

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  1. January 10, 2014 AGENDA: 1 – Bell Ringer 2 – Review HW 3 – Cornell Notes: Balancing Chemical Reactions 4– Practice 5– BrainPop: Chemical Equations Today’s Goal: Students will be able to balance chemical reactions. Homework • Balancing Chemical Reactions Practice Problems • Next week is the last week before exams! So make sure to finish any missing work this weekend to turn in by next Friday at the LATEST!

  2. Friday, January 10 Objective: Students will be able to balance chemical reactions. Bell Ringer: Classify the following reactions: (as synthesis (S), decomposition (D), combustion (C), single-replacement (SR) or double-replacement (DR)) • FeCl3 + NaOH Fe(OH)3 + NaCl • N2 + H2  NH3 • Ag2O  Ag + O2

  3. 4 MINUTES REMAINING…

  4. Friday, January 10 Objective: Students will be able to balance chemical reactions. Bell Ringer: Classify the following reactions: (as synthesis (S), decomposition (D), combustion (C), single-replacement (SR) or double-replacement (DR)) • FeCl3 + NaOH Fe(OH)3 + NaCl • N2 + H2  NH3 • Ag2O  Ag + O2

  5. 3 MINUTES REMAINING…

  6. Friday, January 10 Objective: Students will be able to balance chemical reactions. Bell Ringer: Classify the following reactions: (as synthesis (S), decomposition (D), combustion (C), single-replacement (SR) or double-replacement (DR)) • FeCl3 + NaOH Fe(OH)3 + NaCl • N2 + H2  NH3 • Ag2O  Ag + O2

  7. 2 MINUTES REMAINING…

  8. Friday, January 10 Objective: Students will be able to balance chemical reactions. Bell Ringer: Classify the following reactions: (as synthesis (S), decomposition (D), combustion (C), single-replacement (SR) or double-replacement (DR)) • FeCl3 + NaOH Fe(OH)3 + NaCl • N2 + H2  NH3 • Ag2O  Ag + O2

  9. 1 MINUTE REMAINING…

  10. Friday, January 10 Objective: Students will be able to balance chemical reactions. Bell Ringer: Classify the following reactions: (as synthesis (S), decomposition (D), combustion (C), single-replacement (SR) or double-replacement (DR)) • FeCl3 + NaOH Fe(OH)3 + NaCl • N2 + H2  NH3 • Ag2O  Ag + O2

  11. 30 seconds Remaining…

  12. Friday, January 10 Objective: Students will be able to balance chemical reactions. Bell Ringer: Classify the following reactions: (as synthesis (S), decomposition (D), combustion (C), single-replacement (SR) or double-replacement (DR)) • FeCl3 + NaOH Fe(OH)3 + NaCl • N2 + H2  NH3 • Ag2O  Ag + O2

  13. 10 Seconds Remaining…

  14. BELL-RINGER TIME IS UP!

  15. January 10, 2014 AGENDA: 1 – Bell Ringer 2 – Review HW 3 – Cornell Notes: Balancing Chemical Reactions 4– Practice 5– BrainPop: Chemical Equations Today’s Goal: Students will be able to balance chemical reactions. Homework • Balancing Chemical Reactions Practice Problems • Next week is the last week before exams! So make sure to finish any missing work this weekend to turn in by next Friday at the LATEST!

  16. Cornell Notes • Topic: Balancing Chemical Reactions • Date: 1/10/2014 MgO Mg + O2 Reactants  Products Reflection Question: Why do we balance chemical equations? Things reacting Things produced

  17. Cornell Notes (continued) Law of Conservation of Mass/Matter = = = Mass of reactants Mass of products # of each element of the reactants # of each element of the products

  18. Cornell Notes (continued) Reactants ___ MgO Mg = 1 O = 1 Products ___ Mg + ___ O2 Mg = 1 O = 2 Example: 2 2 1 Coefficients x 2 = 2 x 2 = 2 x 2 = 2 x 1 = 2 Balanced Chem. Eqn. = 2 MgO 2 Mg + 1 O2 = Mg = O  +

  19. Cornell Notes (continued) “How to Balance” Steps: • Draw a line between reactants & products. • Count up all atoms of reactants & products. • Determine multiplier (coefficient)  LCD (Lowest Common Denominator). • Place multiplier (coefficient) in front of compound. • Repeat as necessary until all elements are balanced.

  20. Practice Counting Atoms: O2 O = 2 Fe2O3 Fe = 2 O = 3 2 NaOH Na = 2 O = 2 H = 2 2 Ca(NO3)2 Ca = 2 N = 4 O = 12 …or… …or… 2 Ca(NO3)2 Ca = 2 NO3= 4 2 NaOH Na = 2 OH = 2

  21. Practice (continued) Reactants ___ Ag + ___CuCl2 Ag = 1 Cu = 1 Cl = 2 Products ___ Cu + ___ AgCl Ag = 1 Cu = 1 Cl = 1 Example: 2 1 1 2 x 2 = 2 x 2 = 2 x 1 = 1 x 1 = 1 x 1 = 2 x 2 = 2

  22. Reflection • In the summary section of your Cornell Notes, complete both of the following sentence strands in 5 minutes: • It is important to balance chemical equations because… • I can balance chemical reactions by…

  23. BrainPop: Chemical Equations http://www.brainpop.com/science/matterandchemistry/chemicalequations/

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