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Predicting Products

Predicting Products. Warm Up. EQ: What are the rules for predicting the products of rxns? HOT Q1: When will a single replacement rxn occur? HOT Q2: How do I predict the product of single replacement rxns? HOT Q3: How do I predict the product of double replacement rxns?

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Predicting Products

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  1. Predicting Products

  2. Warm Up • EQ: What are the rules for predicting the products of rxns? • HOT Q1: When will a single replacement rxn occur? • HOT Q2: How do I predict the product of single replacement rxns? • HOT Q3: How do I predict the product of double replacement rxns? • Students will identify the characteristics of an endothermic reaction WKSHT #3 OUT!! • What is the formula of calcium chloride? • Does AuSO4 have a polyatomic ion? What is it? 3. What is the difference between double and single replacement?

  3. Agenda • Warm Up • Predicting Products • Exit Ticket • ANNOUNCEMENTS: WKSHT #4 is HW, Quiz TOMORROW, test on Tuesday (when you get back from break)

  4. Warm Up Sheet Return / Packets

  5. What is the difference between double and single replacement?

  6. Double or Single? ____Ba + ____AuSO4 ____ PbSO4 + ____ AgNO3 ____ KMnO4 + ____ ZnCl2

  7. Predicting Products – Single Replacement

  8. Notes Predicting Products – Single Replacements Definition: One elementreplaces another element A +BC  AC +B

  9. Who would have an easier time getting a date? Or If you were dating Jabba the Hut, would you replace it with Megan Fox ?

  10. Lithium (Li) is likeMeghan Fox. She will always be able to get a date with another element. Jabba the Hut is like Mercury (Hg). If he gets a date he can easily be replaced.

  11. Notes A. Elements higher on the activity series can replace elements lower on the chart. - Ex: Lithium (Li) can replace Mercury (Hg) B. Elements loweron the chart CANNOT replace elements higheron the chart. - Ex: Nickel (Ni)cannot replace Sodium (Na)

  12. Notes Example Problem: C. Could this reaction occur? K + BaCl2 Ba + KCl __________ Why? ______________________________________________________________

  13. Single Replacement Partner Problems • With your partner, decide if the following reactions will occur. • Rb + LiF  RbF + Li • BaF2 + Mg  MgF2 + Ba • Na2S + K  K2S + Na

  14. Single Replacement – Predicting the Products STEPS: Find the nonmetal element Will the nonmetal element trade up? (Look at activity series) If the reaction will occur, swap, drop, and chop it to make the new compound • Predict the products of the following reactions: Ex. KF + Li 

  15. You Try! Predict the products of the following reactions: 1. BaO + Rb  2. HgO + Na 

  16. Predicting Products – Double Replacement

  17. Notes Predicting Products – Double Replacement Double Replacement: Elements switchpartners AB + CD  AD + BC

  18. Notes Predicting Products – Double Replacement A. You can predict products if you follow the general equation. A B + C D A D + C B CaCl2 + AgNO3Ca(NO3)2 + AgCl B. You will also have to use your PToE and the polyatomic ion chart to swap, drop, and chop charges

  19. Double Replacement Sample Problems 1. __NaOH + __KNO3 STEPS: Write the general equation above the reaction Swap, drop and chop charges to make the products

  20. Partner Practice 2. CaSO4 + Mg(OH)2

  21. Partner Practice 3. __MgSO4 + __AgNO3

  22. Partner Practice 4. NaBr + Ca(OH)2 

  23. Partner Practice 5. __Li2O + __NaNO3 

  24. Exit Ticket 1. Consider this incomplete chemical equation: Ba + CuCl2 What are the products of this equation? • BaCl2 and CuCl2 • BaCuCl2 and Ba • BaCl2 and Cu • BaCu and Cl2 BIG QUIZ TOMORROW!! WORKSHEET #4 is HOMEWORK!

  25. Icy/Hot Lab • Grab two baggies for your table. • With a marker label one Baking Soda, the other Yeast. • Fill the Baking Soda baggie with a few drops of Vinegar. Shake. • Fill the Yeast baggies with a few drops of Hydrogen Peroxide. Shake it like a Polaroid picture. • DESCRIBE IN DETAIL WHAT HAPPENS IN EACH BAGGIE.

  26. Hot Pack/ Cold Pack Mini Lab • Grab two baggies for your table. • With a marker label one Baking Soda, the other Yeast. • Fill the Baking Soda baggie with a few drops of Vinegar. Shake. • Fill the Yeast baggies with a few drops of Hydrogen Peroxide. Shake it. DATA/ANALYSIS: Describe in detail what happened in each reaction. • Vinegar & Baking Soda: • Hydrogen Peroxide & yeast:

  27. Consensus Law of Conservation of Energy: What two types of energy have we learned about so far? 3rd Type: Chemical energy = energy stored in chemical bonds • EXOTHERMIC (energy EXits the system) • Chemical energy stored in the reactants is converted to thermal energy • Thermal energy leaves the system (gives off energy)  feels warm or hot • ENDOTHERMIC (energy goes INTO the system) • Thermal energy from the system is absorbed during the rxn feels cold! • Thermal energy is converted to chemical energy and is then stored in the products

  28. Quiz Return

  29. Exit Ticket

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