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SESSION: 36 PAGE: 1 3/20/06 12:26 LOGIN IS-joer PATH: @sunultra1/raid/CLS_tpc/GRP_va_sprg06/JOB_06-ribsg11/DIV_g11chem-1 VIRGINIA STANDARDS OF LEARNING Spring 2005 Released Test END OF COURSE CHEMISTRY CORE 1 Property of the Virginia Department of Education 䉷 2006 by the Commonwealth of Virginia, Department of Education, P.O. Box 2120, Richmond, Virginia 23218-2120. All rights reserved. Except as permitted by law, this material may not be reproduced or used in any form or by any means, electronic or mechanical, including photocopying or recording, or by any information storage retrieval system, without written permission from the copyright owner. Commonwealth of Virginia public school educators may reproduce any portion of these released tests for noncommercial educational purposes without requesting permission. All others should direct their written requests to the Virginia Department of Education, Division of Assessment and Reporting at the above address or by e-mail to [email protected]. 12/2/05 10:12 AM Page 1 Periodic Table of the Elements Atomic mass Group 1 1.00794 H 1 +1 -1 1 Hydrogen 1 6.941 2 Be 3 4 +1 14 4.00260 Silicon 10.81 +2 Transition Elements 14 +3 B C 5 6 1s22s22p1 28.0855 Al Si 13 14 4 Magnesium 40.08 +2 3 4 44.9559 +3 47.88 5 +2 +3 +4 50.9415 51.996 54.9380 55.847 58.9332 58.69 Sc Ti 21 22 23 24 25 26 27 28 [Ar]3d14s2 [Ar]3d24s2 [Ar]3d34s2 [Ar]3d54s1 [Ar]3d54s2 [Ar]3d64s2 [Ar]3d74s2 [Ar]3d84s2 +1 Rb +2 Sr 37 [Kr]5s2 Rubidium +1 Strontium 137.33 Scandium 88.9059 +3 Titanium 91.224 Y 38 [Kr]5s1 132.905 Calcium 87.62 +2 +4 Vanadium 92.9064 Zr Nb +3 +5 Chromium 95.94 Mo +3 +6 Manganese (98) Tc 41 42 43 44 45 [Kr]4d45s1 [Kr]4d55s1 [Kr]4d65s1 [Kr]4d75s1 [Kr]4d85s1 Yttrium 138.906 Zirconium 178.49 +3 +4 Niobium 180.948 +5 Molybdenum Technetium 183.85 +6 186.207 La Hf Ta W Re 57 72 73 74 75 +1 [Xe]5d16s2 Barium 226.025 +2 [Xe]4f145d26s2 Lanthanum 227.028 [Xe]4f145d36s2 Hafnium (261) +3 Tantalum (262) [Xe]4f145d46s2 Tungsten (263) +4 +6 +7 Ruthenium 190.2 Os +3 +4 Ir 76 [Xe]4f145d56s2 Rhenium (262) [Xe]4f145d66s2 Osmium (265) Sg Bh Hs Mt 87 88 89 104 105 106 107 108 109 Actinium [Rn]5f146d37s2 [Rn]5f146d47s2 [Rn]5f146d57s2 [Rn]5f146d67s2 [Rn]5f146d77s2 Dubnium Seaborgium Bohrium Hassium Meitnerium Ce Lanthanoid Series 58 [Xe]4f15d16s2 Cerium 232.038 Actinoid Series +4 140.908 +3 (145) +3 150.36 +2 +3 151.96 Nd Pm Sm 59 60 61 62 63 [Xe]4f36s2 [Xe]4f46s2 [Xe]4f56s2 [Xe]4f66s2 [Xe]4f76s2 Praseodymium Neodymium Promethium 231.036 Pa 90 91 Thorium 144.24 [Xe]4f145d96s1 Pr Th [Rn]6d27s2 +3 +4 +5 [Rn]5f26d17s2 Protactinium 238.029 U +3 +4 +5 +6 92 [Rn]5f36d17s2 Uranium 237.048 Np +3 +4 +5 +6 93 [Rn]5f46d17s2 Neptunium Au 32 +2 Gallium Germanium 114.82 48 200.59 Hg 49 +1 +2 Tl Gold +2 +4 207.2 Pb 81 9 1s22s22p4 P S 74.9216 As Se Selenium 127.60 -3 +3 +5 Te 208.980 Bi 82 Br -2 +4 +6 Tellurium (209) Po 83 39.948 18 [Ne]3s23p6 Argon -1 +1 +5 83.80 Kr I +2 +4 [Ar]3d104s24p6 Krypton -1 +1 +5 +7 131.29 Xe 0 +2 +4 +6 54 [Kr]4d105s25p5 Iodine [Kr]4d105s25p6 Xenon (210) 84 0 +2 36 Bromine 126.905 0 Ar 53 [Kr]4d105s25p4 +3 +5 Neon -1 +1 +3 +5 +7 [Ar]3d104s24p5 52 [Kr]4d105s25p3 10 35 [Ar]3d104s24p4 Antimony +2 +4 79.904 0 1s22s22p6 Chlorine -2 +4 +6 34 Arsenic Sb Cl 20.179 Ne [Ne]3s23p5 Sulfur [Ar]3d104s24p3 121.75 35.453 17 [Ne]3s23p4 78.96 -1 Fluorine -2 +4 +6 16 -3 +3 +5 18 1s22s22p5 Oxygen 32.06 -3 +3 +5 51 Tin +1 +3 F 8 30.97376 50 [Kr]4d105s25p2 Indium 204.383 80 [Xe]4f145d106s1 118.71 Sn [Kr]4d105s25p1 Cadmium +1 +3 +3 O 33 [Ar]3d104s24p2 18.998403 7 Phosphorus [Ar]3d104s24p1 In [Kr]4d105s2 Silver 196.967 Ge 31 Cd 79 (222) 0 At Rn 85 86 [Xe]4f145d106s2 [Xe]4f145d106s26p1 [Xe]4f145d106s26p2 [Xe]4f145d106s26p3 [Xe]4f145d106s26p4 [Xe]4f145d106s26p5 [Xe]4f145d106s26p6 Mercury Thallium Lead Bismuth Samarium (244) Pu Mass numbers in parentheses are those of the most stable or most common isotope. 110 [Rn]5f146d27s2 +3 +4 Pt +2 +4 Ga -2 N [Ne]3s23p3 +2 +4 17 15.9994 -3 -2 -1 +1 +2 +3 4 1s22s22p3 + +5 15 Silicon 72.59 30 112.41 47 Platinum Rutherfordium 140.12 Ag +3 Zn Zinc +1 69.72 14.0067 Nitrogen -4 +2 +4 [Ne]3s23p2 Aluminum +2 16 Polonium Astatine Radon (269?) Db [Rn]6d17s2 107.868 [Kr]4d105s1 Palladium 195.08 65.39 [Ar]3d104s2 Copper +2 +4 [Ne]3s23p1 12 +1 +2 [Ar]3d104s1 78 Iridium Rf Radium +3 +4 (266?) Ac [Rn]7s2 Cu 46 [Xe]4f145d76s2 Ra Francium 63.546 29 [Kr]4d105s0 77 Fr [Rn]7s1 106.42 Pd Rhodium 192.22 Ni 11 +2 +3 Nickel +3 Rh 40 56 Cesium Ru 102.906 [Kr]4d25s2 Ba (223) Cobalt +3 39 55 [Xe]6s2 Iron 101.07 [Kr]4d15s2 Cs [Xe]6s1 +4 +6 +7 Co 10 +2 +3 20 Potassium Fe 9 +2 +3 Ca 85.4678 Mn 8 +2 +3 +4 +7 K [Ar]4s2 Cr 7 +2 +3 +6 19 [Ar]4s1 V 6 +2 +3 +4 +5 -4 +2 +4 Carbon +3 12 +1 15 1s22s22p2 Boron 26.98154 +2 12.0111 Mg Sodium 2 Helium 13 [Ne]3s2 He Name 1s2 Beryllium 24.305 Selected Oxidation States 11 39.0983 7 * 23p2 [Ne]3s -4 +2 +4 Na [Ne]3s1 6 Si Atomic number Electron configuration * The bracketed area 1s22s2 Lithium 5 9.01218 Li 1s22s1 3 Symbol 2 +1 22.98977 28.0855 represents the electron configuration of a noble gas. 1s Period VA_Periodic_table_elements +3 +4 +5 +6 Eu Am 95 [Rn]5f67s2 [Rn]5f77s2 157.25 +3 +3 +4 +5 +6 Americium 158.925 +3 162.50 +3 164.930 +3 167.26 +3 Nonmetals 168.934 +3 173.04 Gd Tb Dy Ho Er Tm Yb 64 65 66 67 68 69 70 [Xe]4f75d16s2 Europium (243) 94 Plutonium +2 +3 Metals Gadolinium (247) +3 [Xe]4f96s2 Terbium (247) Cm Bk 96 97 [Rn]5f76d17s2 Curium [Xe]4f106s2 +3 +4 [Rn]5f97s2 Berkelium [Xe]4f116s2 Dysprosium (251) +3 Holmium (252) [Xe]4f126s2 Erbium (257) [Xe]4f136s2 Thulium (258) +2 +3 [Xe]4f146s2 Ytterbium (259) 174.967 Lu 71 [Xe]4f145d16s2 Lutetium (260) Cf Es Fm Md No Lr 98 99 100 101 102 103 [Rn]5f137s2 [Rn]5f147s2 [Rn]5f107s2 [Rn]5f117s2 Californium Einsteinium [Rn]5f127s2 Fermium Mendelevium +3 Nobelium [Rn]5f146d17s2 Lawrencium Revised November 2004 Copyright © 2006 by the Commonwealth of Virginia Department of Education VA_Periodic_table_elements 12/2/05 10:12 AM Page 2 SESSION: 35 PAGE: 2 1/13/06 6:41 LOGIN IS-garyo PATH: @sunultra1/raid/CLS_tpc/GRP_va_sprg06/JOB_06-ribsg11/DIV_g11chem-1 Chemistry 3 DIRECTIONS Read each question carefully and choose the best answer. Then mark the space on the answer sheet for the answer you have chosen. 2KOH ⴐ H2SO4 → 2H2O ⴐ K2SO4 What mass of potassium hydroxide is required to react completely with 2.70 g of sulfuric acid to produce potassium 2048397 sulfate and water? CY04B403 SAMPLE 4.73 B 3.09 C 2.36 D 1.54 A Which of the following is a balanced equation? g g墍 g g 墍 C L H2 ⫹ Br2 → 2HBr 墍 B H2 ⫹ Br2 → HBr C H2 ⫹ 2Br2 → 2HBr D 2H2 ⫹ Br2 → HBr A 4 Which of the following best describes sublimation? 2048736 A solid melting to a liquid G A solid melting to a liquid, which then evaporates H The movement of gaseous particles so that they fill the space they occupy J A solid forming a gas 墍 F 1 How many valence electrons does a neutral atom of silicon have? 2047609 CY02A611 墌 C 3 B 4 墍 C 5 D 6 A 5 2 2185639 CY03A700 墌 C The correct name for P2O5 is — 2006 Commonwealth of Virginia Department of Education A 2 墍 C The reaction times for three trials of an experiment are 90.3, 90.2, and 90.5 seconds. Which average time is expressed using the correct number of 2047440 significant figures? 90.3 墍 B 90.33 C 90 D 90.333 phosphorus (V) pentoxide G phosphorus oxide H phosphorus (II) oxide J diphosphorus pentoxide 墍 F CY05D508 CY01ER01 墍 C L SESSION: 35 PAGE: 3 1/13/06 6:41 LOGIN IS-garyo PATH: @sunultra1/raid/CLS_tpc/GRP_va_sprg06/JOB_06-ribsg11/DIV_g11chem-1 6 Some Selected Polyatomic Ions 8 ? Al ⴐ ? HCl → ? AlCl3 ⴐ ? H2 2047981 CY03B405 墌 C L Positive Ions Which set of coefficients will balance this equation? 1, G 2, H 2, J 3, F 3, 3, 6, 6, 1, 2, 2, 3, Names Names Symbols NH4ⴐ acetate CH3COOⴑ mercury (II) Hg2ⴐ cyanide CNⴑ oxalate C2O42ⴑ ammonium 1 6 3墍 2 Symbols Negative Ions phosphate PO43ⴑ thiosulfate S2O32ⴑ 7 2047876 CY02FR01 墌 C L Using the table above, what is the correct formula for ammonium phosphate? At room temperature, chlorine exists as a gas, bromine exists as a liquid, and iodine exists as a solid. The physical states of these elements indicate that melting point — 2047927 CY03A307 墍 C NH4PO4 G (NH4)2(PO4)3 H (NH4)3PO4 墍 J NH4(PO4)3 F decreases from top to bottom with group 17 elements B is independent of periodic position C increases from top to bottom within group 17 elements 墍 D is constant within group 17 elements A 9 Element Protons Neutrons Electrons ! " " " " " 2047666 Which represents an atom of calcium? CY02C603 1墍 B 2 C 3 D 4 A 2006 Commonwealth of Virginia Department of Education 3 墍 C ArtCodes CY02C603.AR1 SESSION: 35 PAGE: 4 1/13/06 6:41 LOGIN IS-garyo PATH: @sunultra1/raid/CLS_tpc/GRP_va_sprg06/JOB_06-ribsg11/DIV_g11chem-1 10 13 2084942 Which half-reaction represents reduction? Cu0 → Cu⫹2 ⫹ 2e⫺ ⫹2 ⫹3 B Fe → Fe ⫹ 1e⫺ ⫹1 0 C Ag ⫹ 1e⫺ → Ag 墍 0 ⫹3 D Al → Al ⫹ 3e⫺ A CY01A712 墌 C L ArtCodes CY01A712.AR1 2048142 CY03E108 墍 C L What is the name of the lab equipment shown above? Watch glass G Crucible 墍 H Beaker J Evaporating dish F Titration of Acid with NaOH 13 12 11 10 9 8 7 6 5 4 3 2 1 A scientist has found the following isotope of oxygen: 2047634 CY02B511 墌 C 19 8 O How many neutrons are present in this isotope? 8 B 11 墍 C 19 D 27 A 12 2185632 CY01E701 墌 C 墍 C Equivalence point ArtCodes CY01G722.AR1 0 5 10 15 20 25 30 35 40 45 50 Volume of NaOH added (mL) Indicators for Titrations Indicator pH Range Color Change Bromocresol 4.0 – 5.6 Pink - Blue green Indigo carmine 11.4 – 13.0 Blue - Yellow Neutral red 6.8 – 8.0 Pink - Red - Yellow Phenolphthalein 8.0 – 10.1 Colorless - Pink The melting point of a white solid substance was determined in four repeated trials to be 56.0ⴗC, 55.0ⴗC, 57.5ⴗC, 55.5ⴗC. What temperature should be reported as the melting point as a result of these trials? Which is the best indicator for giving a color change at the equivalence point? Bromocresol green G Indigo carmine H Neutral red J Phenolphthalein 墍 F 55.0⬚C 55.5⬚C H 56.0⬚C 墍 J 57.5⬚C F G 2006 Commonwealth of Virginia Department of Education 2185688 CY01G722 pH 11 14 4 SESSION: 35 PAGE: 5 1/13/06 6:41 LOGIN IS-garyo PATH: @sunultra1/raid/CLS_tpc/GRP_va_sprg06/JOB_06-ribsg11/DIV_g11chem-1 N2 ⴐ 3H2 ⎯→ 2NH3 15 2048314 CY04A201 墌 C 18 If 6 liters of hydrogen gas are used, how many liters of nitrogen gas will be needed for the above reaction at STP? 2 liters 墍 B 3 liters C 4 liters D 12 liters 1 G 2 墍 H 4 J 8 A 16 2048019 CY03C208 墌 C 17 2185640 CY05E701 墌 C F Which of the following best represents the reaction between hydrochloric acid and sodium hydroxide? 19 Solution A B C D pH 2 6 9 12 2048379 CY04B207 墍 C L 2048654 CY04G618 2HCl ⫹ 2NaOH → Na(OH)2 ⫹ H2Cl2 G HCl2 ⫹ 2Na(OH)2 → 2H2O ⫹ 2NaCl ⫹ OH⫺ H HCl ⫹ NaOH → H2O ⫹ NaCl 墍 ⫹ J 2HCl ⫹ Na(OH)2 → 2H2 ⫹ Na ⫹ ⫺ Cl ⫹ O2 F Which pair of solutions would be acidic if mixed in equal quantities? 墍 C A and B 墍 B B and C C B and D D C and D A The freezing point and the boiling point of water can be altered by a variety of techniques. Which of the following has little or no effect on the boiling point of water? 20 The elements that are characterized by the presence of an incomplete d 2047820 sublevel are called — CY02G512 transition elements 墍 G alkali earth metals H halogens J lanthanoids F Increasing the air pressure above the liquid B Adding alcohol to the water C Adding sodium chloride to the water D Increasing the amount of water 墍 A 2006 Commonwealth of Virginia Department of Education Formaldehyde (H2CO) reacts with oxygen to form CO2 and H2O. How many moles of CO2 will be produced from reacting 2 moles of H2CO with oxygen? 5 墍 C L SESSION: 35 PAGE: 6 1/13/06 6:41 LOGIN IS-garyo PATH: @sunultra1/raid/CLS_tpc/GRP_va_sprg06/JOB_06-ribsg11/DIV_g11chem-1 21 1 2 3 23 4 100 Vapor Pressure (kPa) 2048698 CY05B403 墌 C ArtCodes CY05B403.AR1 The type of formula that shows the arrangements of atoms and bonds is called — 80 40 20 40 60 80 100 24 Standard atmospheric pressure is 101.3 kPa. According to the graph, which of these four liquids boils at the lowest temperature? Methyl Mercury Contamination in Red Hollow Brook 4.0 Parts Per Million of Methyl Mercury 1墍 B 2 C 3 D 4 C CY01G720 墍 3.0 ArtCodes CY01G720.AR1 2.0 1.0 0Jan 墌 Apr Jul Oct Jan Apr Jul Oct Jan Apr Jul 1999 The net charge on an aluminum ion is ⴐ3 because there are — 2000 2001 Methyl mercury, found in some stream sediments, is highly toxic to animal life. Using the graphed results of the study shown, the best analysis of the data reveals that the methyl mercury concentration in the stream sediment is — 10 protons and 13 electrons in the atom G 13 protons and 10 neutrons in the nucleus H 10 neutrons and 13 electrons in the atom J 13 protons and 10 electrons in the atom 墍 F steadily increasing, accelerating in the fall of each year G increasing overall but reaches a minimum in the winter H constantly declining throughout each month of the year J decreasing but reaches a maximum at the end of summer 墍 F 2006 Commonwealth of Virginia Department of Education 2185712 C A CY02C506 C 20 Temperature (°C) 2047662 墍 empirical B chemical C molecular D structural 墍 A 60 0 22 2048072 CY03C617 6 SESSION: 35 PAGE: 7 1/13/06 6:41 LOGIN IS-garyo PATH: @sunultra1/raid/CLS_tpc/GRP_va_sprg06/JOB_06-ribsg11/DIV_g11chem-1 C 6 120 墍 110 4 100 90 2048724 CY05D101 ••• 5 • 墌 Carbon B Glucose C Distilled water D Air 墍 A •• CY02H606 1 Kilogram of Water Heating ••• 2047881 28 Which of the following is a mixture? Temperature (˚C) 25 20 C ArtCodes CY05D101.AR1 10 2 0 ••• 3 -10 26 -20 2C4H10 ⴐ 13O2 → 8CO2 ⴐ 10H2O 1 10 ••• ••• ••• 20 80 90 110 180 190 200 720 730 740 750 Heat (Kcal) 2185704 CY01G712 墌 What is the mole ratio of C4H10 to CO2 in the reaction shown? Between points 2 and 3, energy is being used to — C 1⬊4 墍 G 2⬊13 H 4⬊5 J 13⬊8 F 27 2047891 melt ice 墍 G heat water H evaporate water J heat water vapor F One indicator that electrons in atoms are limited to specific energy levels is that — 29 CY02I107 墌 C L atoms move faster when heated B the light given off by atoms is all at the same wavelength C the Doppler effect shows a shift in wavelength for H-atom light D light emitted from excited atoms occurs only at specific wavelengths 墍 A 2006 Commonwealth of Virginia Department of Education A container holds 20.0 grams of neon gas. Under the same conditions, how many grams of xenon would the container hold? 108 B 131 C 262 D 370 A 7 g g墍 g g 2185593 CY04A712 墍 C SESSION: 35 PAGE: 8 1/13/06 6:41 LOGIN IS-garyo PATH: @sunultra1/raid/CLS_tpc/GRP_va_sprg06/JOB_06-ribsg11/DIV_g11chem-1 30 33 2C2H6 + 7O2 2048409 H2SO4 + KOH 4CO2 + 6H2O H2O + K+ + HSO4– CY04B512 墌 C ArtCodes CY04B512.AR1 Which is the base in the reaction? In the combustion of ethane, how many moles of CO2 can be produced from 1.00 mole of C2H6? H2O B KOH 墍 + C K D H2SO4 A 0.500 mole G 1.00 mole H 2.00 moles 墍 J 4.00 moles F 34 31 2185705 CY03C703 墌 C 32 2048498 CY04D603 墌 C L 2048643 CY04G605 What is the molecular formula of a substance that has an empirical formula of C2H5 and a molecular mass of 58 g/mole? C L ArtCodes CY04G605.AR1 Charles’ Law states that if a given quantity of gas is held at a constant pressure, then its volume is directly 2048669 CY05A105 proportional to the absolute temperature. This law explains why — 墍 C the pressure of a gas increases when volume decreases G a gas-filled balloon expands when it is heated 墍 H solids require heat in order to change into gases J some gases only react with each other at high temperatures F C2H5 B C5H2 C C4H10 墍 D C6H15 A According to Boyle’s law, the relationship between the pressure and volume of a gas at constant temperature is — 35 numerically equivalent G inversely proportional 墍 H positively correlated J totally unrelated F 2006 Commonwealth of Virginia Department of Education 墍 What is a possible cause of a large percentage of error in an experiment where MgO is produced from the combustion of magnesium? Not all of the Mg has completely reacted. 墍 B The same balance was used throughout the experiment. C The students were careful in their measurements. D The students were careful not to spill the contents. A 8 2047488 CY01F205 墍 C SESSION: 35 PAGE: 9 1/13/06 6:41 LOGIN IS-garyo PATH: @sunultra1/raid/CLS_tpc/GRP_va_sprg06/JOB_06-ribsg11/DIV_g11chem-1 36 39 Na2CO3 ⴐ Ca(OH)2 → 2NaOH ⴐ CaCO3 2048153 CY03E308 墌 Which condition will cause a shift in 2048569 the equilibrium of the above reaction? CY04F204 Which type of reaction is represented here? 墍 C Double the concentration of reactants C and products B Increase the reaction temperature 墍 C Reduce the concentration of products and reactants by 10% D Keep the reaction temperature constant A Single replacement G Double replacement 墍 H Synthesis J Decomposition F 37 2048786 CY05F505 墌 C 38 2048039 CY03C406 墌 C L 2HCl(g) s H2(g) ⴐ Cl2(g) The amount of energy needed to raise one gram of a substance one degree Celsius is a characteristic property known as — 40 2O3 (g) → 3 (g) 2047963 Which completes the chemical equation above? heat of formation B heat of vaporization C molar heat of fusion D specific heat capacity 墍 A CY03B101 墍 O2 墍 G O3 H ClO J ClO2 C F The empirical formula for C6H12 is — 41 C3H6 G C2H4 H CH3 J CH2 墍 F A G B C D E F 2185562 CY03D709 墍 C ArtCodes CY03D709.AR1 An alien astronaut landed on Earth and created the periodic table shown. The astronaut was trying to determine what type of bond would be present in several compounds. The type of bond in a compound containing G and E would be — a metallic bond B a nonmetallic bond C a covalent bond D an ionic bond 墍 A 2006 Commonwealth of Virginia Department of Education 9 SESSION: 35 PAGE: 10 1/13/06 6:41 LOGIN IS-garyo PATH: @sunultra1/raid/CLS_tpc/GRP_va_sprg06/JOB_06-ribsg11/DIV_g11chem-1 42 43 2185622 CY01A703 90 C 80 墌 CY01A703.AR1 60 50 40 Final fluid level Original fluid level 10 mL CY03G514 墍 50 80 C L Total Mass of Flask and Contents (g) 70 60 50 ArtCodes CY03G514.AR1 40 40 30 30 20 2048294 90 70 ArtCodes Reaction of CaCO3 and HCI 100 mL 100 mL Object X 0 20 10 40 50 60 10 mL CaCl2 + H2O + CO2 Calcium carbonate was placed in a flask on a balance, and dilute hydrochloric acid was added. Carbon dioxide that was produced escaped from the flask. The total mass of the flask and its contents was recorded every 10 seconds. The diagram above shows a plot of the results. Between which of the following times was the reaction the fastest? The volume of Object X is approximately — 20 G 25 H 30 J 35 30 Time (s) CaCO3 + 2HCl F 20 mL mL 墍 mL mL 0 and 10 seconds 墍 B 10 and 20 seconds C 20 and 30 seconds D 30 and 40 seconds A 44 How many liters are equivalent to five milliliters? 2185737 0.005 L 墍 G 0.05 L H 500 L J 5000 L F 2006 Commonwealth of Virginia Department of Education 10 CY01G724 墍 C SESSION: 35 PAGE: 11 1/13/06 6:41 LOGIN IS-garyo PATH: @sunultra1/raid/CLS_tpc/GRP_va_sprg06/JOB_06-ribsg11/DIV_g11chem-1 45 2047503 46 The following data were collected. The volume of the gas is known to be 2.20 L. CY01F517 墌 Gas Volume Data C L The total pressure of an O2-Ar-He gas mixture is 755 mmHg. If the partial pressure of Ar is 174 mmHg and the partial pressure of He is 389 mmHg, then the partial pressure of O2 is — 192 G 282 H 366 J 563 F Trial Measured Volume (L) 1 5.20 2 5.20 3 5.19 4 5.20 5 5.20 ArtCodes CY01F517.AR1 47 mmHg 墍 mmHg mmHg mmHg 2185641 CY04C706 墍 C L Bonding between two elements of equal electronegativity would be — 2048091 100% covalent 墍 B primarily ionic C 50% ionic D metallic in character A This data reflects — low precision and low accuracy B low precision and high accuracy C low accuracy and high precision 墍 D high accuracy and high precision A 48 The molar mass (gram formula mass) for the compound sodium thiosulfate, Na2S2O3, is — CY03D203 墍 C 2048014 CY03C110 71 grams G 153 grams H 158 grams 墍 J 254 grams F 2006 Commonwealth of Virginia Department of Education 11 墍 C SESSION: 35 PAGE: 12 1/13/06 6:41 LOGIN IS-garyo PATH: @sunultra1/raid/CLS_tpc/GRP_va_sprg06/JOB_06-ribsg11/DIV_g11chem-1 49 The correct formula for copper (I) bromide is — 50 Which of the following models a synthesis reaction? 2048188 CY03E509 墍 2047953 CY03A519 墌 C L CuBr 墍 B CuBr2 C Cu2Br D Cu2Br3 A 2+ Cu Fe + Fe O 2– F C 2+ S O O S O O (aq) (s) O 2– O + Cu O (aq) (s) ArtCodes 2+ G O Ca O C 2– 2+ Ca CY03E509.AR1 CY03E509.AR2 CY03E509.AR3 CY03E509.AR4 2– O O + O C O (g) (s) (s) H S + (s) O O O S (g) Ag J O 1– + N O O (aq) 2006 Commonwealth of Virginia Department of Education 12 墍 (g) 1+ 1+ O K 1+ 1– Cl Ag 1+ 1– K + Cl (aq) (s) O 1– N O O (aq) SESSION: 35 PAGE: 13 1/13/06 6:41 LOGIN IS-garyo PATH: @sunultra1/raid/CLS_tpc/GRP_va_sprg06/JOB_06-ribsg11/DIV_g11chem-1 Answer Key Test Sequence Correct Answer Reporting Category Reporting Category Description 1 B 002 Atomic Structure and Periodic Relationships 2 J 003 Nomenclature, Chemical Formulas, and Reactions 3 B 004 Molar Relationships 4 J 005 Phases of Matter and Kinetic Molecular Theory 5 A 001 Scientific Investigation 6 H 003 Nomenclature, Chemical Formulas, and Reactions 7 C 002 Atomic Structure and Periodic Relationships 8 H 003 Nomenclature, Chemical Formulas, and Reactions Atomic Structure and Periodic Relationships 9 A 002 10 G 001 Scientific Investigation 11 B 002 Atomic Structure and Periodic Relationships 12 H 001 Scientific Investigation 13 C 003 Nomenclature, Chemical Formulas, and Reactions 14 J 001 Scientific Investigation 15 A 004 Molar Relationships 16 H 003 Nomenclature, Chemical Formulas, and Reactions 17 D 005 Phases of Matter and Kinetic Molecular Theory 18 G 004 Molar Relationships 19 A 004 Molar Relationships 20 F 002 Atomic Structure and Periodic Relationships 21 A 005 Phases of Matter and Kinetic Molecular Theory 22 J 002 Atomic Structure and Periodic Relationships 23 D 003 Nomenclature, Chemical Formulas, and Reactions 24 J 001 Scientific Investigation 25 D 002 Atomic Structure and Periodic Relationships 26 F 001 Scientific Investigation 27 D 002 Atomic Structure and Periodic Relationships 28 F 005 Phases of Matter and Kinetic Molecular Theory 29 B 004 Molar Relationships 30 H 004 Molar Relationships 31 C 003 Nomenclature, Chemical Formulas, and Reactions 32 G 005 Phases of Matter and Kinetic Molecular Theory 33 B 004 Molar Relationships 34 G 005 Phases of Matter and Kinetic Molecular Theory 35 A 001 Scientific Investigation 36 G 003 Nomenclature, Chemical Formulas, and Reactions 37 D 005 Phases of Matter and Kinetic Molecular Theory 38 J 003 Nomenclature, Chemical Formulas, and Reactions 39 B 004 Molar Relationships 40 F 003 Nomenclature, Chemical Formulas, and Reactions 41 D 003 Nomenclature, Chemical Formulas, and Reactions 42 G 001 Scientific Investigation 43 A 003 Nomenclature, Chemical Formulas, and Reactions 44 F 001 Scientific Investigation 45 C 001 Scientific Investigation 46 F 005 Phases of Matter and Kinetic Molecular Theory 47 A 003 Nomenclature, Chemical Formulas, and Reactions 48 H 003 Nomenclature, Chemical Formulas, and Reactions 49 A 003 Nomenclature, Chemical Formulas, and Reactions 50 H 003 Nomenclature, Chemical Formulas, and Reactions