Test 2 WI05 Version A Solution

Test 2 WI05 Version A Solution - SCI220 Test #2 VERSION A...

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SCI220 Test #2  VERSION A NAME_____________________ March 3, 2005 ABC _______ Closed Book and Closed Note Provided Periodic Table and Calculator Permitted Questions 1-17 Multiple Choice (3 points each).  Choose ONE BEST answer.   1) How many valence electrons does bromine (Br,  atomic no. = 35) have? a) 1 b) 7 c) 21 d) 28 e) 35 2) If a neutral atom gains two electrons, what is the  electrical charge of the atom? a) -1 b) +1 c) -2 d) +2 e) neutral 3) Which of the following elements will most likely  form an ion with a +2 charge? a) Na b) Mg c) Ne d) Si e) Cl 4) What is the formula of the ionic compound  formed from iodine (I) ions and barium (Ba) ions? a) BaI 2 b) BaI c) Ba 56 I 53 d) Ba 2 I e) Ba 2 I 2 5) Which of the following bonds would be the most  polar? a) C-F b) C-Cl c) C-Br d) C-I e) All are equally polar 6) Which of the following is a covalent compound  composed of nonpolar covalent bonds? a) H 2 b) H 2 O c) CF 4 d) CH 4 e) NaF 7) Which of the following attractive forces causes  nitrogen molecules, N 2 , to stick together in the  liquid phase? a) Ion-dipole b) covalent bonding c) Dipole-induced dipole d) Induced dipole-induced dipole e) Dipole-dipole 8) The separation of charges within a polar  molecule is called a(n) _____ a) Dipole b) Dipole-dipole c) Ionic bond d) Strong attraction e) Polar bond 9) Which of the following is the main form of  attraction between water molecules? a) Dipole-dipole b) Induced dipole-induced dipole c) Covalent bonding d) Ion-dipole e) Polar-induced polar 10) Under which of the following conditions would  you expect the highest solubility of oxygen gas in  water? a) High temperature and low pressure b) Low temperature and high pressure
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SCI220 Test #2  VERSION A Page 2 of 6 March 3, 2005 c) Low temperature and low pressure d) High temperature and high pressure 11) Soap and grime are attracted to each other by  what type of electrical attraction? a) Covalent bonding b) Ionic bonding c) Dipole-dipole  d) Induced dipole-induced dipole e) Grime and soap are not electrically attracted 12) Which of the following is soluble in water a) Vitamin A because it is non-polar b) Vitamin A because it causes water molecules  to break apart into hydrogen and oxygen c) Vitamin C because it is polar
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This note was uploaded on 02/09/2010 for the course HIST 1246 taught by Professor Dr.brosky during the Spring '10 term at Abilene Christian University.

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Test 2 WI05 Version A Solution - SCI220 Test #2 VERSION A...

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