Chemistry Fall Semester Exam

Chemistry Fall Semester Exam - Name: Class: Date: ID: A...

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Unformatted text preview: Name: Class: Date: ID: A Chemistry First Semester Exam - Level Multiple Choice Identify the Choice that best completes the statement or answers the question. 1. Name the compound CF4. a. carbon tetrafluoride c. calcium fluoride b. monocarbon quadrafluoride d. carbon fluoride 2. To which group do fluorine and chlorine belong? a. halogens c. alkaline-earth metals b. actinides d. transition elements A.Cl—H= BJHiCl: cake]: l).H—C::I= 3. Looking at the structures above, what is the Lewis structure for HCl? a. A b. B c. C d. D 4. The number of significant figures in the measurement 170040 ion is a. 4. b. 3. c. 6. d. 5. 5. A positively charged particle with mass 1.673 x 1044 g is a(n) a. positron. e. neutron. b, electron. d. proton. 6. What is the formula for aluminum sulfate? a. AleO4 C. b. AlSO4 d. Al(SO4)3 7. The person whose work led to a periodic table based on increasing atomic number was a. Cannizzaro. c. Moseley. b. Rutherford. d. Mcndeleev. 8, Name the compound 1360102)} a. ferric nitrate c. ferrous nitride b. iron(ll) nitrate d. iron(ll) nitrite 9. Chemistry is defined as the study of the composition and structure of materials and a. the electrical currents in matter. 0. the categories of matter. b. the changes in matter. d. molecules in living things. l0. The average distance between the Earth and the moon is 386 000 km. Expressed in scientific notation, this distance is a. 38 x 104 km. 0. 386 x 103 km. b. 3.86 x 105km. d. 3.8 x 105 km. l 1. Elements to the right side of the periodic table (p-block elements) have properties most associated with a. nonmetals. c, gases. b. metals. (‘1. metalloids. Name: ID: 12. An example ofa chemical change is a. melting ice. c. milk going sour. b. sanding wood. d. vaporizing gasoline. l3. Zinc-66 has a. 30 neutrons. c. 96 neutrons. b. 36 neutrons. d. 33 neutrons. l4. Isotopes of an element contain different numbers of a. nuelides. c. protons. b. electrons. cl. neutrons. 15. Which of the following observations is quantitative? a. The liquid is cloudy. c. The liquid tastes bitter. b. The liquid turns blue litmus paper red. d. The liquid boils at l000C. 16. The element with electron configuration 152 2.512 2p6 3S3 3;)2 is a. C. b. S. 0. Mg. d. Si. l7. The chemical bond formed when two atoms share electrons is called a(n) a. ionic bond. c. orbital bond. b. covalent bond. d. Lewis structure. 18. These values were obtained as the mass of products from the same reaction; 8.83 g; 8.84 8.82 g. The known mass of products from that reaction is 8.60 g. The values are a. accurate. c. both accurate and precise. b. precise. d. neither accurate nor precise. 19. An aluminum isotope consists 01'13 protons. l3 electrons, and 14 neutrons, Its mass number is a. 14. h. 27. c. 40. d. 13. 20. A horizontal row of blocks in the periodic table is called a(n) a. octet. b. family. c. period. d. group. 21. Predict the shape ofthe molecule. HCl. a. tetrahedral b. trigonal planar c. linear d. bent 22. The product of 13 cm and 5.7 cm is correctly reported as a, 74 c1113. c. 74.l cmg. b. 75 mpg. d. 74.0 CTIIZ. 23. The number of significant figures in the measurement 0.000 305 kg is a. 4. b. 3. c. 6. d. 5. 24. Predict the shape ofthe molecule. C11. a. tetrahedral c. trigonal planar 1). linear d. bent 25. The mass ofa 5.00 cm3 sample ofgold is 96.5 g. The density ofgold is a. 19.3 g/em3. c. 483 g/cm‘. b. 101.5 g/cm‘. d. 0.0518 g/cm3. Name: 26. What is the electron configuration for nitrogen, atomic number 7? a. Is2 2s3 2p' e. ls2 233 2p2 35' b. ls2 2S2 2p3 d. ls2 253 2])3 27. A physical property may be investigated by a. melting ice. c. burning wood. b. allowing silver to tarnish. d. letting milk turn sour. 28. What is the formula for the compound calcium chloride? a. CaCl c. CagCl b. CaClg d. CaCl3 29. What is the formula for barium hydroxide? a. BaOH; c. BaOH b. Ba(OH) d. Ba(OH)g 30. The nucleus of most atoms is composed of a. loosely connected protons and electrons. c. tightly packed protons. b. tightly packed neutrons. d. tightly packed protons and neutrons. 31. What does the 218 in polonium-218 represent? a. the atomic number c. the neutron number b. the mass defect ' d. the mass number 32. The number of significant figures in the measurement 210 cm is a. 2. b. 4. c. l. d. 3. 33. The sum of3l4.53 km and 32 km is correctly expressed as a. 346.5 km. c. 346.53 km. b. 346 km. (1. 347 km. 34. What does the 101 in Md represent? a. the atomic number c. the nuclide number b. the mass number d. the number ofneutrons 35. Name the compound KC-lOg. a. potassium chlorate c. hypochlorite b. potassium trioxychlorite _ d. potassium chloride 36. How many valence electrons does bromine have? a. 7 c. 18 b. 35 d. 17 37. Argon, krypton. and xenon are a. lanthanides. c. noble gases. b. aetinides. d. alkaline earth metals. 38. Name the compound N204. a. hinitrogen oxide c. dinitrogen tetroxide b. nitrous oxide d. sodium tetroxide Name: ID: 39. Written in scientific notation, the measurement 0.000 065 cm is a. 6.5 x 10'5 cm. c. 6.5 X 10'4 cm. b. 6.5x100cm. d. 65x 10"1 cm. 40. What is the formula for diphosphorous pentoxidc? a. PO; 0. P213005 b. P205 d. P204 41. Balance the following equation: 239 U 9SNp—>7~1~_l e 239 238 941)“ C. 94])u 239 239 b. 90Th d. 92U —-2. 1.06 L of water is equivalent to a. 0.001 06 mL. b. 1060 mL. c. 106 mL. (1. 10.6 mL. —-3. The element that has the greatest electronegativity is a. chlorine. b. fluorine. c. sodium. d. oxygen. 44. Which element has the following noble gas configuration: [Xe] 6.3-1? 3. Radon b. Cesium c. Xenon d. Iodine 45. Chlorine has atomic number 17 and mass number 35. It has a. 17 protons. 17 electrons, and 52 neutrons. b. 18 protons, 18 electrons. and 17 neutrons. c. 35 protons. 35 electrons, and 17 neutrons. d. 17 protons, 17 electrons, and 18 neutrons. 46. The elements that border the zigzag line in the periodic table are a. nonmetals. b. inactive. c. metalloids. d. metals. 47. Mendeleev is credited with developing the first successful a. use ofX rays. b. method for determining atomic number. 0. test for radioactivity. d. periodic table. 48. Ag—109 has 62 neutrons. The neutral atom has a. 40 electrons. b. 47 electrons. c. 53 electrons. d. 62 electrons. 49. Which of the following forms of radiation has the greatest penetrating power? a. alpha particles b. gamma rays 0. positrons d. beta particles 50. Which ofthc following observatiOns is qualitative? a. The pH ofa liquid is S. b. The solid has a mass of 23.4 grams. c. A chemical reaction is complete in 2.3 seconds. d. Salt deposits form from an evaporated liquid. ...
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This note was uploaded on 02/14/2012 for the course CH 101 taught by Professor Sutcliffe during the Fall '08 term at University of Texas at Austin.

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Chemistry Fall Semester Exam - Name: Class: Date: ID: A...

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