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Jeopardy

Jeopardy. Honors Chemistry Thermochemistry Change in Enthalpy, Calorimetry, Endothermic vs. Exothermic, Calculations, and Definitions. DIRECTIONS. GAME BOARD. Directions.

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Jeopardy

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  1. Jeopardy Honors Chemistry Thermochemistry Change in Enthalpy, Calorimetry, Endothermic vs. Exothermic, Calculations, and Definitions DIRECTIONS GAME BOARD

  2. Directions The Game Board Slide: Click on a dollar amount to see the question. After a question has been attempted the dollar amount will disappear. The Question Slides: Use the space bar or right arrow on the keyboard to see the answer. Click the Game Board button to return to the game board. Start with the game board. When a student or team selects a category and a dollar amount, click it with the mouse. The question will appear. Use the right arrow or space bar on the keyboard to see the answer. Click the game board button to return to the game board. Repeat. Press the Esc button on the keyboard to stop playing. GAME BOARD

  3. Thermochemistry Jeopardy Change in Enthalpy Calorimetry Endo vs. Exo Calculations Definitions $100 $100 $100 $100 $100 $200 $200 $200 $200 $200 $300 $300 $300 $300 $300 $400 $400 $400 $400 $400 $500 $500 $500 $500 $500 Final Jeopardy DIRECTIONS TITLE PAGE

  4. Change in Enthalpy$100 What must be held constant in a chemical reaction in order for the change in enthalpy (∆H) to equal the amount of heat (q) generated/released ? Use space bar or right arrow on keyboard to see answer. Pressure. GAME BOARD

  5. Change in Enthalpy$200 Write a formation equation for glucose, C6H12O6(s). Be sure to include the value of ∆Hf° Use space bar or right arrow on keyboard to see answer. 6 Cgraphite(s) + 6 H2(g) + 3 O2(g)  C6H12O6(s) ∆Hf°= -1273.02 kJ/mol GAME BOARD

  6. Change in Enthalpy$300 Calculate the standard enthalpy change for the following reaction: 3 Fe2O3(s) + CO(g)  2 Fe3O4(s) + CO2(g) Use space bar or right arrow on keyboard to see answer. ∆Hrxn°= -50.72 kJ GAME BOARD

  7. Change in Enthalpy$400 Find ∆Hf° for C4H4S(l) using the information given below: C4H4S(l) + 6 O2(g)  4 CO2(g) + SO2(g) + 2 H2O(l) ∆Hrxn° = 2523 kJ Use space bar or right arrow on keyboard to see answer. ∆Hf° for C4H4S(l) = +80.44 kJ/mol GAME BOARD

  8. Change in Enthalpy$500 Given the following equations and ∆H values, determine the heat of the following reaction: B2H6(g) + 6 Cl2(g)  2 BCl3(g) + 6 HCl(g) • BCl3(g) + 3 H2O(l)  H3BO3(g) + 3 HCl(g) ∆H= -112.5 kJ • B2H6(g) + 6 H2O(l)  2 H3BO3(g) + 6 H2(g) ∆H= -493.4 kJ • ½ H2(g) + ½ Cl2(g)  HCl(g) ∆H= -92.3 kJ Use space bar or right arrow on keyboard to see answer. ∆Hrxn= -1376 kJ GAME BOARD

  9. Calorimetry$100 What two conditions are needed in order for a reaction to be considered standard? Use space bar or right arrow on keyboard to see answer. 298K/25ºC and atmospheric pressure GAME BOARD

  10. Calorimetry$200 How much heat is needed to raise 14 g of a metal with a specific heat of 0.105 J/g.⁰C from 24.0⁰C to 98.3⁰C? Use space bar or right arrow on keyboard to see answer. 109.22 Joules GAME BOARD

  11. Calorimetry$300 1219 joules of heat raise the temperature of 250 g of metal by 64⁰C. What is the specific heat of the metal? Use space bar or right arrow on keyboard to see answer. 0.076 J/g.⁰C GAME BOARD

  12. Calorimetry$400 If a 28g sample of a metal is heated to 93⁰C and then dropped into 25g of water in a calorimeter, what is the specific heat of the metal if the temperature of the water rose from 20.4⁰C to 23.9⁰C? Use space bar or right arrow on keyboard to see answer. 0.19J/g.⁰C GAME BOARD

  13. Calorimetry$500 175 g of aluminum at 98⁰C is dropped into an insulated cup that contains 50mL of cold water at 16⁰C. Determine the temperature of thermal equilibrium if the specific heat of aluminum is 0.90J/gx⁰C Use space bar or right arrow on keyboard to see answer. 51.22⁰C GAME BOARD

  14. Endo vs. Exo$100 Is the following reaction endothermic or exothermic? 2NaHCO3 + 129kJ  Na2CO3 + H2O + CO2 Use space bar or right arrow on keyboard to see answer. Endothermic GAME BOARD

  15. Endo vs. Exo$200 Is the following reaction endothermic or exothermic? Fe2O3 + 3CO  2Fe + 3CO2 ∆H = -26.3kJ Use space bar or right arrow on keyboard to see answer. Exothermic GAME BOARD

  16. Endo vs. Exo$300 A person performs a chemical reaction inside a zip-lock bag. When the reaction is finished, the bag feels warm to the touch. Use space bar or right arrow on keyboard to see answer. Exothermic GAME BOARD

  17. Endo vs. Exo$400 In an exothermic reaction, is the enthalpy lower for the reactants or the products? Use space bar or right arrow on keyboard to see answer. Lower= Products GAME BOARD

  18. Enthalpy$500 Draw an enthalpy diagram for the following reaction: 2 Al2O3(s)  4 Al(s) + 3 O2(g) ∆H = + 3352 kJ Use space bar or right arrow on keyboard to see answer. Up-Hill Diagram GAME BOARD

  19. Calculations$100 What is the SI Unit for heat and energy? Use space bar or right arrow on keyboard to see answer. Joule GAME BOARD

  20. Calculations$200 Percent Daily Values on Nutrition Fact labels are based on a 2,000 Calorie diet. What would this be in joules? Use space bar or right arrow on keyboard to see answer. 8,368,000 or 8.368x106 joules GAME BOARD

  21. Calculations$300 A given system does 37kJ of work upon its surroundings and then releases 61kJ of heat. Calculate the internal energy, ∆E, of the system. Use space bar or right arrow on keyboard to see answer. -98 kJ GAME BOARD

  22. Calculations$400 2Na + Cl2  2NaCl ∆H= -190kJ If 2.67 moles of sodium were used in this reaction, how much heat (in kJ) would be produced? Use space bar or right arrow on keyboard to see answer. -253.65 kJ GAME BOARD

  23. Calculations$500 S + O2 SO2 ∆H= -297kJ If 501.19 kJ were released in the above reaction, how many grams of oxygen were used? Use space bar or right arrow on keyboard to see answer. 54 g GAME BOARD

  24. Definitions$100 The portion of the universe that we single out for study. Use space bar or right arrow on keyboard to see answer. System GAME BOARD

  25. Definitions$200 The energy that an object possesses by virtue of its motion. Use space bar or right arrow on keyboard to see answer. Kinetic Energy GAME BOARD

  26. Definitions$300 The movement of an object against some force. Use space bar or right arrow on keyboard to see answer. Work GAME BOARD

  27. Definitions$400 The law which states that energy is conserved in any process. Use space bar or right arrow on keyboard to see answer. First Law of Thermodynamics GAME BOARD

  28. Definitions$500 The heat evolved in a given process can be expressed as the sum of the heats of several processes that, when added, yield the process of interest. Use space bar or right arrow on keyboard to see answer. Hess’s Law GAME BOARD

  29. Final Jeopardy How many kilojoules of heat are given off when 0.28 moles of water is cooled from 75⁰C to 25⁰C? Use space bar or right arrow on keyboard to see answer. GAME BOARD

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