Final Exam 1 with Solutions for Chemistry - Introduction Chemistry I |, Exams of Chemistry

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CHEM 10113-015 EXAM #1 NAME __ a. September 17, 2009 {Please Print) DIRECTIONS: « For Multiple Choice, write your answers as CAPITAL LETTERS. e For Short Answers, please write legibly. e For Mathematical Problems, SHOW ALL WORK using UNITS, INCLUDING ALL STEPS, and reporting your answer with appropriate SIG FIGS. — (42 points) Write correct formulas for the following compounds: 2 chromium (Ill) nitrate Cr (N02) b. zinc nitride Zn, No c. oxalic acid Hea laby barium hydroxide octahydrate Baloea ° ¥ 4,0 2 sodium thiosulfate. Naa S02 © pe (1 point) What is the name of the scientist who proposed the Law of Conservation of Mass in the late 1700's? Lovell ster 2 (1 point) What is the name of the scientist who reorganized the Periodic Table of the Elements in order of increasing ATOMIC NUMBER? MoseMuy 6 _ 4. (1 point) The boiling of water is a A) physical change because the water merely disappears. B) physical change because the gaseous water is chemically the same as the liquid. C) chemical change because heat is needed for the process to occur. D) chemical change because a gas (steam) is given off. E) chemical and physical damage. A 5. (4 point) Which of the fallowing pairs can be used fo illustrate the law of multiple proportions? A) SO and SO2 B) CO and CaCO3 C) HgO and C49H22044 D) H2SO4 and H2S E) KCl and KCIO2