EXAM%202_CHEM%2025_FALL%202008_FINAL

EXAM%202_CHEM%2025_FALL%202008_FINAL - CHEM 25: EXAM #2 05....

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1 CHEM 25: EXAM #2 05. NOVEMBER 2008 Name ___________________________ Please check the studio to which you are assigned: _____ Mon PM _____ Tues AM _____ Thurs AM _____Fri PM _____ Tues PM _____ Thurs PM This exam must be completed without the aid of books, notes or colleagues. You may use a non-programmable calculator; if your calculator is programmable, you must present it to a TA and have it cleared before you begin the exam. All answers must be clearly written in the space indicated and mathematical work must be shown for full credit to be awarded for numerical answers and for all answers for which calculations are carried out . Please write your name on the top of each page. A periodic chart is included as the last page of the exam. Good luck … And remember: “Democracy is the occasional necessity of deferring to the opinions of other people.” --Winston Churchill
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2 NAME:___________________________ Part I. Multiple choice: Clearly circle the TRUE answer(s) (MORE THAN ONE ANSWER CAN BE RIGHT ) for each of the following questions (2 pts ea.). Overall # of points: 38 1.Which of the following is untrue for energy? A) It cannot have mass. B) It can propagate through space. C) It cannot be converted from one form into the other. D) It can neither be created not destroyed. 2. How can you recognize that work is being done? A) An object is pulled by a force along a distance. B) The temperature changes. C) The volume of a gas increases. D) None of these. 3. Which statements are true for thermal energy? A) It is a microscopic form of potential energy (position at the molecular level). B) It is a macroscopic form of potential energy. C) It is a microscopic form of kinetic energy (motion at the molecular level). D) It is a macroscopic form of kinetic energy. 4. Bond energy is a form of: A) Potential energy. B) Thermal energy. C) .Kinetic Energy. D) None of the above. 5. Which of the following processes are endothermic? A) Combustion of methane. B) Solidification of a liquid. C) Melting of a solid. D) Condensation of a gas.
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3 NAME:__________________________ 6. Continental climates have larger temperature differences between summer and winter compared to oceanic climates. What is the major reason for this? A) Water has a higher heat capacity than soil. B) Water has a lower heat capacity than soil. C) Water can evaporate easily while soil does not. D) None of the above are major reasons. 7. Which of the following substances are not in their standard states? A) diamond (C diamond (s)) B) ozone (O 3 (g)) C) water vapor (H 2 O (g)) D) graphite (C graphite (s)) 8. Which reactions are standard formation reactions? A) N
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EXAM%202_CHEM%2025_FALL%202008_FINAL - CHEM 25: EXAM #2 05....

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