Template by Becky Afghani, 2007 Jeopardy Honors Chemistry Thermochemistry Change in Enthalpy, Calorimetry, Endothermic vs. Exothermic, Calculations, and Definitions GAME BOARDDIRECTIONS

Template by Becky Afghani, 2007 Directions GAME BOARD 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.

Template by Becky Afghani, 2007 DIRECTIONSTITLE PAGE Change in Enthalpy CalorimetryCalculations Endo vs. Exo Definitions $100 $200 $300 $400 $500 Thermochemistry Jeopardy Final Jeopardy

Template by Becky Afghani, 2007 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 ? Pressure. GAME BOARD Use space bar or right arrow on keyboard to see answer.

Template by Becky Afghani, 2007 Change in Enthalpy $200 Write a formation equation for glucose, C 6 H 12 O 6 (s). Be sure to include the value of ∆H f ° 6 C graphite (s) + 6 H 2 (g) + 3 O 2 (g)  C 6 H 12 O 6 (s) ∆H f °= kJ/mol GAME BOARD Use space bar or right arrow on keyboard to see answer.

Template by Becky Afghani, 2007 Change in Enthalpy $300 Calculate the standard enthalpy change for the following reaction: 3 Fe 2 O 3 (s) + CO(g)  2 Fe 3 O 4 (s) + CO 2 (g) ∆H rxn °= kJ GAME BOARD Use space bar or right arrow on keyboard to see answer.

Template by Becky Afghani, 2007 Change in Enthalpy $400 Find ∆H f ° for C 4 H 4 S(l) using the information given below: C 4 H 4 S(l) + 6 O 2 (g)  4 CO 2 (g) + SO 2 (g) + 2 H 2 O(l) ∆H rxn ° = kJ ∆H f ° for C 4 H 4 S(l) = kJ/mol GAME BOARD Use space bar or right arrow on keyboard to see answer.

Template by Becky Afghani, 2007 Change in Enthalpy $500 Given the following equations and ∆H values, determine the heat of the following reaction: B 2 H 6 (g) + 6 Cl 2 (g)  2 BCl 3 (g) + 6 HCl(g) a.BCl 3 (g) + 3 H 2 O(l)  H 3 BO 3 (g) + 3 HCl(g) ∆H= kJ b.B 2 H 6 (g) + 6 H 2 O(l)  2 H 3 BO 3 (g) + 6 H 2 (g) ∆H= kJ c.½ H 2 (g) + ½ Cl 2 (g)  HCl(g) ∆H= kJ ∆H rxn = kJ GAME BOARD Use space bar or right arrow on keyboard to see answer.

Template by Becky Afghani, 2007 Calorimetry $100 What two conditions are needed in order for a reaction to be considered standard? 298K/25ºC and atmospheric pressure GAME BOARD Use space bar or right arrow on keyboard to see answer.

Template by Becky Afghani, 2007 Calorimetry $200 How much heat is needed to raise 14 g of a metal with a specific heat of J/g. ⁰ C from 24.0 ⁰ C to 98.3 ⁰ C? Joules GAME BOARD Use space bar or right arrow on keyboard to see answer.

Template by Becky Afghani, 2007 Calorimetry $ joules of heat raise the temperature of 250 g of metal by 64 ⁰ C. What is the specific heat of the metal? J/g. ⁰ C GAME BOARD Use space bar or right arrow on keyboard to see answer.

Template by Becky Afghani, 2007 Calorimetry $400 If a 28g sample of a metal is heated to 93 ⁰ C 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 20.4 ⁰ C to 23.9 ⁰ C? 0.19J/g. ⁰C GAME BOARD Use space bar or right arrow on keyboard to see answer.

Template by Becky Afghani, 2007 Calorimetry $ g of aluminum at 98 ⁰ C is dropped into an insulated cup that contains 50mL of cold water at 16 ⁰ C. Determine the temperature of thermal equilibrium if the specific heat of aluminum is 0.90J/gx ⁰ C ⁰C GAME BOARD Use space bar or right arrow on keyboard to see answer.

Template by Becky Afghani, 2007 Endo vs. Exo $100 Is the following reaction endothermic or exothermic? 2NaHCO kJ  Na 2 CO 3 + H 2 O + CO 2 Endothermic GAME BOARD Use space bar or right arrow on keyboard to see answer.

Template by Becky Afghani, 2007 Endo vs. Exo $200 Is the following reaction endothermic or exothermic? Fe 2 O 3 + 3CO  2Fe + 3CO 2 ∆H = -26.3kJ Exothermic GAME BOARD Use space bar or right arrow on keyboard to see answer.

Template by Becky Afghani, 2007 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. Exothermic GAME BOARD Use space bar or right arrow on keyboard to see answer.

Template by Becky Afghani, 2007 Endo vs. Exo $400 In an exothermic reaction, is the enthalpy lower for the reactants or the products? Lower= Products GAME BOARD Use space bar or right arrow on keyboard to see answer.

Template by Becky Afghani, 2007 Enthalpy $500 Draw an enthalpy diagram for the following reaction: 2 Al 2 O 3 (s)  4 Al(s) + 3 O 2 (g) ∆H = kJ Up-Hill Diagram GAME BOARD Use space bar or right arrow on keyboard to see answer.

Template by Becky Afghani, 2007 Calculations $100 What is the SI Unit for heat and energy? Joule GAME BOARD Use space bar or right arrow on keyboard to see answer.

Template by Becky Afghani, 2007 Calculations $200 Percent Daily Values on Nutrition Fact labels are based on a 2,000 Calorie diet. What would this be in joules? 8,368,000 or 8.368x10 6 joules GAME BOARD Use space bar or right arrow on keyboard to see answer.

Template by Becky Afghani, 2007 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. -98 kJ GAME BOARD Use space bar or right arrow on keyboard to see answer.

Template by Becky Afghani, 2007 Calculations $400 2Na + Cl 2  2NaCl ∆H= -190kJ If 2.67 moles of sodium were used in this reaction, how much heat (in kJ) would be produced? kJ GAME BOARD Use space bar or right arrow on keyboard to see answer.

Template by Becky Afghani, 2007 Calculations $500 S + O 2  SO 2 ∆H= -297kJ If kJ were released in the above reaction, how many grams of oxygen were used? 54 g GAME BOARD Use space bar or right arrow on keyboard to see answer.

Template by Becky Afghani, 2007 Definitions $100 The portion of the universe that we single out for study. System GAME BOARD Use space bar or right arrow on keyboard to see answer.

Template by Becky Afghani, 2007 Definitions $200 The energy that an object possesses by virtue of its motion. Kinetic Energy GAME BOARD Use space bar or right arrow on keyboard to see answer.

Template by Becky Afghani, 2007 Definitions $300 The movement of an object against some force. Work GAME BOARD Use space bar or right arrow on keyboard to see answer.

Template by Becky Afghani, 2007 Definitions $400 The law which states that energy is conserved in any process. First Law of Thermodynamics GAME BOARD Use space bar or right arrow on keyboard to see answer.

Template by Becky Afghani, 2007 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. Hess’s Law GAME BOARD Use space bar or right arrow on keyboard to see answer.

Template by Becky Afghani, 2007 Final Jeopardy How many kilojoules of heat are given off when 0.28 moles of water is cooled from 75 ⁰ C to 25 ⁰ C? GAME BOARD Use space bar or right arrow on keyboard to see answer.