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Regents Chemistry

Regents Chemistry

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Regents Chemistry

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  1. Regents Chemistry REVIEW - 2 *Questions from NYS Chemistry Regents exams Kenneth E. Schnobrich

  2. Just a Note • The questions in Review-2 generally do not involve reference to a major diagram. • All questions are taken from Regents Exams, parts A and B-1. • In most cases, it will help to have your “Reference Tables for Physical Setting/CHEMISTRY” available.

  3. 1/07-1 • Which subatomic particles are located in the nucleus of a neon atom?

  4. 1/07-1 • Which subatomic particles are located in the nucleus of a neon atom? correct

  5. 1/07-2 • The total mass of the protons in an atom of gold-198 is approximately

  6. 1/07-2 • The total mass of the protons in an atom of gold-198 is approximately correct

  7. 1/07-3 • In a calcium atom in the ground state, the electrons that possess the least amount of energy are located in the

  8. 1/07-3 • In a calcium atom in the ground state, the electrons that possess the least amount of energy are located in the correct

  9. 1/07-4 • Which group of atomic models is listed in historical order from the earliest to the most recent?

  10. 1/07-4 • Which group of atomic models is listed in historical order from the earliest to the most recent? correct

  11. 1/07-5 • Which isotopic notation represents an atom of carbon-14?

  12. 1/07-5 • Which isotopic notation represents an atom of carbon-14? correct

  13. 1/07-6 • An atom of argon rarely bonds to an atom of another element because an argon atom has

  14. 1/07-6 • An atom of argon rarely bonds to an atom of another element because an argon atom has correct

  15. 1/07-7 • The elements on the Periodic Table are arranged in order of increasing

  16. 1/07-7 • The elements on the Periodic Table are arranged in order of increasing correct

  17. 1/07-8 • Which element is classified as a nonmetal?

  18. 1/07-8 • Which element is classified as a nonmetal? correct

  19. 1/07-9 • Solid samples of the element phosphorous can be white, black, or red in color. The variations in the color are due to different

  20. 1/07-9 • Solid samples of the element phosphorous can be white, black, or red in color. The variations in the color are due to different correct

  21. 1/07-10 • Given the balanced equation representing a reaction between propane and oxygen: • C3H8 + 5O2 -> 3CO2 + 4H2O • According to this equation, which ratio of oxygen to propane is correct?

  22. 1/07-10 • Given the balanced equation representing a reaction between propane and oxygen: • C3H8 + 5O2 -> 3CO2 + 4H2O • According to this equation, which ratio of oxygen to propane is correct? correct

  23. 1/07-11 • Lithium and potassium have similar chemical properties because the atoms of both elements have the same

  24. 1/07-11 • Lithium and potassium have similar chemical properties because the atoms of both elements have the same correct

  25. 1/07-12 • Which two substances are covalent compounds?

  26. 1/07-12 • Which two substances are covalent compounds? correct

  27. 1/07-13 • which substance when dissolved in water, forms a solution that conducts and electric current?

  28. 1/07-13 • Which substance when dissolved in water, forms a solution that conducts and electric current? correct

  29. 1/07-15 • Compared to a phosphorous atom, a P3- ion has

  30. 1/07-15 • Compared to a phosphorous atom, a P3- ion has correct

  31. 1/07-16 • The balanced equation below represents a molecule of bromine separating into two bromine atoms. • Br2 -> Br + Br • What occurs during the change?

  32. 1/07-16 • The balanced equation below represents a molecule of bromine separating into two bromine atoms. • Br2 -> Br + Br • What occurs during the change? correct

  33. 1/07-17 • Which substance can be decomposed by chemical means?

  34. 1/07-17 • Which substance can be decomposed by chemical means? correct

  35. 1/07-18 • Bronze contains 90 to 95% copper and 5 to 10% tin. Because these percentages can vary, bronze is classified as

  36. 1/07-18 • Bronze contains 90 to 95% copper and 5 to 10% tin. Because these percentages can vary, bronze is classified as correct

  37. 1/07-19 • Compared to a 2.0 M aqueous solution of NaCl at 1 atmosphere, a 3.0 M aqueous solution of NaCl at 1 atmosphere has a

  38. 1/07-19 • Compared to a 2.0 M aqueous solution of NaCl at 1 atmosphere, a 3.0 M aqueous solution of NaCl at 1 atmosphere has a correct

  39. 1/07-20 • In which reaction are the electrons transferred from one reactant to another?

  40. 1/07-20 • In which reaction are the electrons transferred from one reactant to another? correct

  41. 1/07-21 • Which statement must be true for any chemical reaction at equilibrium?

  42. 1/07-21 • Which statement must be true for any chemical reaction at equilibrium? correct

  43. 1/07-24 • Which group of emissions is listed in order of increasing charge?

  44. 1/07-25 • Two substances have different physical and chemical properties. Both substances have molecules that contain two carbon atoms, one oxygen atom, and six hydrogen atoms. These two substances must be

  45. 1/07-25 • Two substances have different physical and chemical properties. Both substances have molecules that contain two carbon atoms, one oxygen atom, and six hydrogen atoms. These two substances must be correct

  46. 1/07-26 • Given the balanced equation representing a reaction: • CH3CH2CH3 + Br2 -> CH3CH2CH2Br + HBr • This organic reaction is best classified as

  47. 1/07-26 • Given the balanced equation representing a reaction: • CH3CH2CH3 + Br2 -> CH3CH2CH2Br + HBr • This organic reaction is best classified as correct

  48. 1/07-27 • In terms of energy and entropy, systems in nature tend to undergo changes toward

  49. 1/07-27 • In terms of energy and entropy, systems in nature tend to undergo changes toward correct

  50. 1/07-29 • Which compound has hydrogen bonding between its molecules?