120exams_Exam_1 - Exam #1 CHEMISTRY 120A Name Section/TA _...

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Exam #1 July 17, 2003 CHEMISTRY 120A 1 Name __________________________________ Section/TA __________________________________ Useful information: 1 cal = 4.184 J E = s x m x T s (iron) =0.45 J/g o C Multiple choice, fill in the blank, or short answer: (3 points each) 1. A __________________ is a summary of observed behavior and __________________ is an explanation of behavior: a. law, measurement b. theory, scientific method c. theory, law d. law, theory e. hypothesis, theory 2. The appropriate number of significant figures in the result of 15.234 x 15.20 is: a. 2 b. 3 c. 4 d. 5 e. 6 3. The SI prefix that corresponds to a factor of 10 -3 is: a. kilo b. deci c. cent d. milli e. none of these 4. Using the rules of significant figures, calculate the following: 12.67 + 13.005 = a. 25.675 b. 25 c. 20 d. 25.68 e. 25.7
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Exam #1 July 17, 2003 CHEMISTRY 120A 2 5. The number 14.809 rounded to three significant figures: a. 15.0 b. 14.9 c. 14.81 d. 14.8 e. 14.0 6. The correct A Z X notation for the following atom: 6e- 6p 7n 13 6 C 7 6 C 7 6 Li 13 6 N 13 7 N 7. The state of matter for an object that has a definite volume but not a definite shape is ________________________________ 8. If iodine melts at 114 o C and boils at 184 o C, what is its physical state at 120 o C?
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This note was uploaded on 05/17/2008 for the course CHEM 120 taught by Professor Gammon during the Fall '07 term at University of Washington.

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120exams_Exam_1 - Exam #1 CHEMISTRY 120A Name Section/TA _...

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