111%20Final%20Fall%202007

111%20Final%20Fall%202007 - Name _ Chemistry 111 Section _...

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Name _________________________ Chemistry 111 Section ____________ FINAL EXAM Total Points = TA ___________________________ Wednesday, 3:20 PM 200 December 12, 2007 Directions: 1. Each student is responsible for following directions. Read this page carefully. 2. Write your name and other requested information on this page and on the separate answer sheet. 3. CODE your name on the answer sheet using an ordinary (#2) pencil. 4. CODE your correct 10-digit identification number (PUID) on the answer sheet. THIS IS VERY IMPORTANT! 5. CODE your section number on the answer sheet. Please use all four digits, 0101, 0102, 0201, etc. This is also very important! 6. Put all calculations on the examination pages. DO NOT PUT ANY EXTRA MARKS ON THE COMPUTER ANSWER SHEET! 7. This exam consists of 40 multiple-choice questions worth 5 points each. Choose the one best or correct answer for each question and write it both on your exam paper and on the computer answer sheet. The computer answer sheet is the only one that will be graded! 8. This exam consists of 9 pages plus a Periodic Table. Please check to be sure that you have them all! Useful Information Avogadro’s number = 6.022 x 10 23 1 END OF EXAM 1) Please make sure that you have entered 40 answers on your scan sheet. 2) Make sure that you have entered your name, ID number, and lab section number (4 digits). 3) You MUST turn the scan sheet in to your TA before leaving the exam!
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Chem 111 – Final Exam – 12/12/07 _____ 1. The density of ice is slightly lower than the density of water. This means: (a) Water is a homogeneous mixture. (b) Converting water to ice is a chemical change. (c) Ice will sink in water. (d) Converting water to ice involves a loss of atoms. (e) Converting water to ice involves volume change _____ 2. Which of the following are chemical changes? i) rusting of a nail ii) a cookie being metabolized iii) decomposition of water into hydrogen and oxygen gases iv) alcohol being evaporated v) butter melting in a heated copper pot (a) i (b) i, ii (c) i, ii, iii (d) i, ii, iii, iv (e) i, ii, iii, iv, v _____ 3. Which of the following conversions is correct? (a) 1 cm = 0.001 m (b) 12.5 cm = 125 mm (c) 0.092 m = 9.2 mm (d) 20 mL = 0.2 L (e) 0.3 g = 30 mg _____ 4. How many significant figures should there be in the answer to the following? (3.15
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111%20Final%20Fall%202007 - Name _ Chemistry 111 Section _...

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