Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
CP Chemistry First Semester Final Exam 1-20 Matching: Write the letter of the correct answer from Column B in the space before the term in Column A. Column A Column B ____ 1. Reactants ____ 2. Metals ____ 3. Ionic bond ____ 4. Atomic number ____ 5. Isoelectronic ____ 6. Quantum ____ 7. JJ Thomson ____ 8. Anion ____ 9. Cation ____ 10. Mendeleev ____ 11. Atomic mass ____ 12. Covalent bond (a) (b) (c) (d) (e) (f) (g) (h) (i) (j) (k) (l) ____ ____ ____ ____ ____ ____ ____ ____ (m) (n) (o) (p) (q) (r) (s) (t) 13. 14. 15. 16. 17. 18. 19. 20. Products Ernest Rutherford Dissolved in water Valence electrons Moseley Octet rule Niels Bohr Ground state weighted average of all the isotopes of an element having the same electron configuration as another element Planetary Model of the atom He listed the elements in order of increasing atomic mass. any atom or molecule with a (+) charge the number of protons in an atomic nucleus (aq) atoms bond in order to obtain 8 valence electrons are found in the outer s and p sublevels substances found on the left side of a chemical equation He listed the elements in order of increasing atomic number all electrons in the atom are in the lowest available energy levels substances found on the right side of a chemical equation results from the attraction between (+) and (-) particles elements found left of the zig zag line on the periodic table Plum Pudding model of the atom any atom or molecule with a (-) charge occurs as atoms share valence electrons Gold Foil Experiment energy needed to move from one energy level to another 21-25 Determine the most common oxidation state (charge) of the following elements: 21. selenium ____ 22. oxygen ____ 23. aluminum ____ 24. barium ____ 25. sodium ____ 26-27 Name the two subatomic particles found in the nucleus of an atom. 26. 27. 28-29 Write the electron configurations for the following atoms: 28. As 29. Ca 33-36 Determine whether the following compounds contain ionic or covalent bonds. 33. K2Se 34. SO3 35. CCl4 36. KCl 37-39 Name the following polyatomic ions: 37. CrO4-2 38. BO3-3 39. PO4-3 40-42 Write the formulas for the following polyatomic ions: 40. iodate 41. thiosulfate 42. carbonate 43-52 Name the following compounds 43. NaBr 45. H2Se 44. BF3 46. H2CrO4 47. NH4NO3 48. MgCl2 49. KCN 50. Ca3(PO4)2 51. SF6 52. Fe(NO3)3 53-62 Write the formulas for the following compounds 53. carbonic acid 58. tetraphosphorus triselenide 54. sodium chlorate 59. dinitrogen heptoxide 55. potassium bromide 60. lead II sulfide 56. hydrofluoric acid 61. sodium thiosulfate 57. nickel II hydroxide 62. magnesium sulfate 63. Determine the identity of the element from the following electron configuration. 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s1 64. How many electrons can fit in the 4th energy level? 65-70 Short answer. 65. What is the family name of the group 1A elements? 66. What is the family name of the group 8A elements? 67. What is the general classification of elements right of the zigzag line on the periodic table? 68. What is a period on the periodic table? 69. What is the family name of the group 7A elements? 70. What occupies the majority of the volume of an atom? 71-74 Determine the number of valence electrons in the following atoms. 71. Kr 72. Ca 73. Li 75. 76. 74. B Write the symbol for the ion of iodine. What do you name the ion of iodine? 87-88 Predict the molecular structures of the following substances: 87. NH3 88. CBr4 89. Determine the number of neutrons in 197 Au+3 79 90. The identity of an element is determined by the number of what subatomic particle? 91. Place the following atomic models of the atom in the order they were developed. (a) 4,3,2,1 (b) 3,4,1,2 (c) 1,2,3,4 (d) 2,1,4,3 92) In Rutherfords experiments most of the alpha (α) particles passed through the gold foil while some of the particles were deflected back towards the particle emitter. The best possible explanation for this is : (a) the + charged alpha particle is repelled by the + charge of the electrons surrounding the nucleus (b) there were so many atoms lined up in the gold foil that the alpha particles could not get through the gold foil and therefore bounced back (c) the atom is mostly empty space with a small dense + charged nucleus (d) the alpha particle occasionally collided with a (-) charged electron of one of the gold atoms and bounced back toward the emitter. Bonus: (1) Write the electron dot structure for SO4-2 (2) Pb(NO3)2 (aq) + 2KI (aq) 2KNO3 (aq) + PbI2 (s) Suppose you are provided with 100 ml of 0.5 M Pb(NO3)2 and 100 ml of 0.85 M KI. Determine the limiting reactant for the reaction. (Show your work) (3) Determine the energy (in Joules) of the light given off from a hydrogen atom when an electron drops from the 5th energy level to the 3rd energy level. 90. Convert 165 Kelvin to oC. 92. A sample of a gas has a volume of 1.30 L at 67oC. Assuming constant pressure, determine the temperature when the volume increases to 2.15 L. 93. At 18oC a sample of neon gas has a volume of 4.22 L and a pressure of 0.645 atm. Determine the pressure when the temperature changes to 60oC and the volume decreases to 2.40 L. 94. Determine the temperature that must exist for 0.650 moles of argon to exert a pressure of 1330 mmHg and occupy a volume of 7.75 liters. 95. Determine the graph which best represents how the variables compare in Boyle’s Law 96-97 Discuss the difference between an independent and a dependent variable in a scientific study. 96. independent variable 97. dependent variable 89. Determine the number of neutrons in 79Au +3 91. The identity of an element is determined by the number of what subatomic particle? 92-96 Tom and Tessa Toro conducted a chemical experiment in which they added varying amounts of magnesium to an excess of HCl. They produced magnesium chloride and hydrogen gas. They captured and measured to hydrogen gas that was produces. The data they collected is presented in the table below: Mass Mg (g) 0.1 0.2 0.3 0.4 0.5 0.6 Vol H2 (mL) 92 184 276 368 460 553 92. Transfer the data a graph on your answer sheet. 93. What is the dependent variable in Tom and Tessa’s experiment? (a) The volume of Mg (b) The volume of H2 (c) The mass of Mg (d) The mass of H2 (e) The ‘X’ axis 94. What type of graph should be made with this data? (a) pie chart (b) bar graph (c) line graph (d) scatter plot (e) ”bar and whiskers” graph 95. What type of relationship between the two variables is depicted on the graph you constructed? (a) neutral (b) positive (c) negative (d) exponential (e) no relationship