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PS Exam Review Fall 15-16 Chapter 8,10
  • 1. In order for a solution to form,
A) a gas must dissolve in a liquid.
B) one substance must dissolve in another.
C) a solid must dissolve in a liquid
D) the solvent must be water.
  • 2. During the formation of a solution, energy is
A) released only.
B) neither released nor absorbed.
C) absorbed only.
D) either released or absorbed.
  • 3. In an exothermic reaction, the amount of energy required to break the attractions among the solute particles and among the solvent particles is
A) equal to the energy released as attractions form between solute and solvent particles.
B) equal to the heat of solution.
C) less than the energy released as attractions form between solute and solvent particles.
D) greater than the energy released as attractions form between solute and solvent particles.
  • 4. A student dissolved equal amounts of salt in equal amounts of warm water, room-temperature water, and ice water. Which of the following is true?
A) None of the above
B) The salt dissolved most quickly in the room-temperature water.
C) The salt dissolved most quickly in the warm water
D) The salt dissolved most quickly in the ice water.
  • 5. A student dissolved equal amounts of salt in equal amounts of warm water, room-temperature water, and ice water. Which of the following is true?
A) The salt dissolved most quickly in the room-temperature water.
B) The salt dissolved most quickly in the ice water.
C) The salt dissolved most quickly in the warm water.
D) None of the above
  • 6. A solution that contains more solute than it would normally hold at that temperature is said to be
A) supersaturated.
B) concentrated.
C) saturated.
D) unsaturated.
  • 7. Which of the following is NOT a property of an acid
A) usually reacts with a metal
B) tastes sour
C) feels slippery
D) changes the color of an indicator
  • 8. A girl tasted each of the following foods. Which of the following would NOT taste acidic to her?
A) tomato
B) celery
C) orange
D) lime
  • 9. A base is defined as a compound that produces
A) hydrogen ions in solution.
B) sodium ions in solution.
C) hydronium ions in solution.
D) hydroxide ions in solution.
  • 10. Which of the following is NOT a common property of bases?
A) feels slippery
B) tastes bitter
C) changes colors of indicators
D) reacts with metals
  • 11. The products of the neutralization reaction between hydrochloric acid and magnesium hydroxide are
A) MgCl2 and H2O
B) HCl and Mg(OH)2
C) HCl and MgOH
D) MgCl and H2O
  • 12. An acid can be defined as
A) a proton acceptor.
B) both a proton donor and a proton acceptor.
C) neither a proton donor nor a proton acceptor.
D) a proton donor.
  • 13. A compound has a pH of 6 in solution, where very little of it has ionized. The compound is a
A) strong acid.
B) strong base.
C) weak base.
D) weak acid.
  • 14. A substance that ionizes or dissociates into ions when placed in water is always a(an)
A) strong base.
B) conductor.
C) strong acid.
D) electrolyte
  • 15. Which of the following are examples of strong electrolytes?
A) strong acids and strong bases
B) pure water and buffers
C) weak acids and weak bases
D) strong and weak bases
  • 16. What is the process in which an unstable atomic nucleus emits charged particles or energy or both?
A) radioactivity
B) none of these
C) decomposition
D) oxidation
  • 17. Uranium-238 undergoes alpha decay. Therefore, uranium-238 will
A) remain stable
B) none of these
C) change into a different element altogether
D) emit neutral particles and no energy
  • 18. What type of nuclear decay releases energy but not a particle?
A) electron decay
B) gamma decay
C) alpha decay
D) beta decay
  • 19. Which of the following statements is NOT true?
A) most of the nuclear radiation you are exposed to occurs naturally in the environment
B) naturally occuting nuclear radiation is called background radiation
C) all natural radiation is at a level low enough to be safe
D) you are exposed to nuclear radiation every day
  • 20. Alpha-emitting substances, such as radon gas, can be a serius health hazard only if
A) their radiation strikes the skin
B) none of these
C) they are inhaled or eaten
D) exposure to them is external
  • 21. In general, the nucleus of a small atom is stable. Therefore, over very short distances,such as those in a small nucleus,
A) the strong nuclear force equals the electric force.
B) the strong nuclear force and the electric force are both attractive.
C) the electric force is much greater thatn the strong nuclear force.
D) the strong nuclear force is much greater than the electric force.
  • 22. The strong nuclear force felt by a single proton in a large nucleus
A) is about the same as that felf by a single proton in a small nucleus
B) is much greater than that felt by a single protom in a small nucleus
C) is much less than that flet by a single proton in a small nucleus
D) is about the same as the elctric force felt by a single proton proton in a small nucleus
  • 23. During nuclear fission, great amounts of energy are produce from
A) tremendous amounts of mass
B) a series of chemical reactions
C) very small amounts of mass
D) particle accelerators
  • 24. Which of the following is an advantage of using nuclear power plants to produce electricity?
A) nuclear power plants produce wastes that are easy to dispose of
B) nuclear power plants produce more stable wastes compared to fossil fuel combustion
C) all of these
D) nuclear power plants do not pollute the air
  • 25. Which of the following is NOT an advantabe of using a fusion reaction instead of a fission reaction to produce energy?
A) Workers are not in as much danger from radiation.
B) No harmful waste products are produced.
C) Fusion reactors require less energy than fission reactors do.
D) Hydrogen is used, and hydrogen is easily obtained from water.
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