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EOC Review

EOC Review. Trivia Race #3. 1. Which model represents the law of conservation of matter?. 2. Which of the following is insoluble in water? In other words, which one can be a precipitate? Ammonium chloride Calcium chromate Barium bromide Copper II carbonate. #3. #4. #5. #6. #7.

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EOC Review

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  1. EOC Review Trivia Race #3

  2. 1. Which model represents the law of conservation of matter?

  3. 2. Which of the following is insoluble in water? In other words, which one can be a precipitate? • Ammonium chloride • Calcium chromate • Barium bromide • Copper II carbonate

  4. #3

  5. #4

  6. #5

  7. #6

  8. #7

  9. #8

  10. #9

  11. #10

  12. 1. Which acid is the stronger acid? A. HCl B. HF 2. Which acid will have a higher pH? A. HCl B. HF NOTE: Must answer as a combination answer. Example: AA, AB, BB, or BA. #11

  13. #12 What is the pH of a solution that has a hydronium ion concentration of [2.5 x 10-3]? A. 11.4 B. 3.0 C. 2.6 D. 9.0

  14. Not the same question: #13 What is the pOH of a solution that has a hydronium ion concentration of [2.5 x 10-3]? A. 11.4 B. 3.0 C. 2.6 D. 9.0

  15. #14 What is the hydroxide ion concentration of a solution that has a pOH of 8.8? A. 6.31 x 10-6 B. 1.58 x 10-9 C. 5.04 x 10-5 D. 1.32 x 10-8

  16. #15 Consider four sealed, rigid containers with the following volumes: 50 mL, 100 mL, 250 mL and 500 mL. If each of these contains .25 moles of helium gas at standard temperature, which container would have the greatest pressure? A50 mL B100 mL C250 mL D 500 mL

  17. #16 Which substance would be least likely to dissolve in a polar solvent? A nonpolar molecule Bacids Cpolar molecule Dionic compound

  18. #17 When referring to the solubility of different substances, the phrase "like dissolves like" is often used as a guideline to select an appropriate solvent. The property referenced in "like dissolves like" is the — A mass of the molecule B size of the molecule C polarity of the molecule D temperature of the molecule

  19. #18 If the temperature of a gas changes, but the number of moles and volume remain constant, which of the following values must also change? A density B pressure C number of atoms D mass

  20. #19 How many electrons are in a Cd3+ ion? A112 B51 C48 D45

  21. #20 From which of the following atoms would it be the MOST difficult to remove an electron? A sodium B aluminum C sulfur D chlorine

  22. #21 A sample of Element X is found to contain 72.15% of isotope type 1 (84.9118 amu) and 27.85% of isotope type 2 (86.9092 amu). Calculate the average atomic mass. A85.13 amu B85.47 amu C86.21 amu D86.49 amu

  23. #22 The protons in Rutherford’s experiments were used to — Aidentify chemical properties Bidentify the melting point Cdetermine molecular mass Dbombard sheets of gold

  24. #23 Which of the following atoms would have the largest ionic radius? A lithium B sodium C potassium D cesium

  25. #24 A solution in which more solute is dissolved than is typically soluble at a given temperature is — A unsaturated B saturated C supersaturated D diluted

  26. #25 What volume of 2.5M NaOH solution contains 3.25 mol of NaOH? A 0.098 L B0.575 L C1.30 L D1.45 L

  27. #26 Element X reacts with chlorine to form an ionic compound that has the formula XCl2. To which group on the Periodic Table could element X belong? (A) Group 1 (B) Group 13 (C) Group 2 (D) Group 15

  28. #27 Which general trend is found in Period 3 as the elements are considered in order of increasing atomic number? (A) increasing atomic radius (B) increasing electronegativity (C) decreasing atomic mass (D) decreasing first ionization energy

  29. #28 Which of the following stated electrons were scattered throughout a positive mass? (A) Rutherford Model (B) Planck Model (C) Bohr Model (D) Plum Pudding Model

  30. #29 Which conclusion is based on the “gold foil experiment” and the resulting model of the atom? (A) An atom is mainly empty space, and the nucleus has a positive charge. (B) An atom is mainly empty space, and the nucleus has a negative charge. (C) An atom has hardly any empty space, and the nucleus has a positive charge. (D) An atom has hardly any empty space, and the nucleus has a negative charge.

  31. #30 Whichof thefollowingis a falsestatement: (A) Ernest Rutherford identifiedthenucleus of theatom. (B) Democritus thought that changes in matter resulted from atoms simply rearranging. (C) John Dalton believed that all atoms of the same element were all identical. (D) According to J.J. Thomson, atoms of elements are indivisible

  32. #31 A bromine atom in the ground state will have an electron configuration of (A) [Ar] 4s1 3d104p5 (B) [Ar] 4s2 3d9 4p5 (C) [Ar] 4s23d104p5 (D) [Ar] 4s2 3d9 4p6

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