Exam 1 - Please Print First Name Please Print Last Name...

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Please Print First Name:_________________________ Please Print Last Name:________________________ Signature: ____________________________________ Student ID #: _________________________________ Chemistry 111A FIRST EXAM October 6, 2008 Professors Loomis/Frey 6:30 - 8:00 p.m. 1.5 HOURS will be allowed for the exam. No books, notes, other students, other students’ exams, or any other resource materials are allowed. No form of white-out may be used on the exam. The examination contains (8) questions on (17) numbered pages. Some of the questions contain more than one part. You must clearly and neatly show your work and your reasoning used to arrive at the correct answer in the space provided, in order to receive full credit. Clearly identify your final answers. Partial credit will be given for partially correct reasoning in support of incorrect or correct final answers. No credit will be given unless the answers are legibly written in the spaces provided. If you run out of space, use the scratch page at the end of the exam, you may not use your own scratch paper. Clearly indicate on the page where the problem is written where the continuation of your response is located. Do not write on the backside of the exam pages, they will not be graded. PLEASE WRITE YOUR NAME ON EACH PAGE OF THE EXAM. TURN IN THE ENTIRE EXAM WHEN YOU ARE FINISHED! REGRADE INFORMATION: Read the syllabus section on regrades on the general information sheet. Regrade requests must be placed in the wood cabinet labeled “Regrades,” by the racks on the 2 nd floor of the Lab Sciences Building. Attach the regrade form to the front of the exam stating which questions you would like regraded and the grading errors that have been made. DO NOT MAKE ANY MARKS OR CHANGES ON THE EXAM ITSELF. DO NOT WRITE ANYTHING ON THE EXAM! Regrade requests must be turned in by 4:30 PM on Monday, October 13, 2008. For Grading Only: 1. __________ (6 pts) 5. __________ (14 pts) 2. __________ (8 pts) 6. __________ (17 pts) 3. __________ (17 pts) 7. __________ (10 pts) 4. __________ (18 pts) 8. __________ (10 pts) Total Points: __________ (100 pts)
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Print Last Name: ____________________ First Name: ____________________ 2 1. (6 Total pts.) The ancient Greek philosopher Democritus observed that the sand on the seashore when viewed from afar looks to be a single body, a “beach.” Therefore, so also may all matter be made up of tiny little granules of matter – the smallest of which he called atoms, which in Greek means, “uncuttable.” By virtue of the name itself, an atom in Democritus’ theory was the smallest thing in existence. a) (3 pts.) In two sentences or less, describe one way that Democritus’ observation is consistent with Dalton’s atomic theory of matter. Only the first two sentences will be graded. (Grading: Overall, 2 pts for Dalton’s theory and 1 pt for beach analogy). According to Dalton, atoms are the smallest indivisible particles ( 2 pts ) _characteristic of a specific element, just like the grains of sand are the smallest indivisible pieces of a beach. A beach appears to be a single body from a distance, but upon closer examination, it is composed of multiple pieces (grains of sand) ( 1 pt ) .
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This note was uploaded on 10/20/2008 for the course CHEM 111A taught by Professor Hockings during the Fall '08 term at Washington University in St. Louis.

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Exam 1 - Please Print First Name Please Print Last Name...

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