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PS Exam Review Fall 15-16 Chapter 8,10
  • 1. In order for a solution to form,
A) the solvent must be water.
B) a gas must dissolve in a liquid.
C) one substance must dissolve in another.
D) a solid must dissolve in a liquid
  • 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) less than the energy released as attractions form between solute and solvent particles.
B) greater than the energy released as attractions form between solute and solvent particles.
C) equal to the heat of solution.
D) equal to 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) The salt dissolved most quickly in the ice water.
B) The salt dissolved most quickly in the room-temperature water.
C) None of the above
D) The salt dissolved most quickly in the warm 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 warm water.
B) The salt dissolved most quickly in the room-temperature water.
C) The salt dissolved most quickly in the ice 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) concentrated.
B) unsaturated.
C) supersaturated.
D) saturated.
  • 7. Which of the following is NOT a property of an acid
A) usually reacts with a metal
B) changes the color of an indicator
C) tastes sour
D) feels slippery
  • 8. A girl tasted each of the following foods. Which of the following would NOT taste acidic to her?
A) tomato
B) orange
C) celery
D) lime
  • 9. A base is defined as a compound that produces
A) sodium ions in solution.
B) hydrogen ions in solution.
C) hydroxide ions in solution.
D) hydronium ions in solution.
  • 10. Which of the following is NOT a common property of bases?
A) feels slippery
B) changes colors of indicators
C) tastes bitter
D) reacts with metals
  • 11. The products of the neutralization reaction between hydrochloric acid and magnesium hydroxide are
A) HCl and Mg(OH)2
B) HCl and MgOH
C) MgCl and H2O
D) MgCl2 and H2O
  • 12. An acid can be defined as
A) both a proton donor and a proton acceptor.
B) 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) weak acid.
B) strong base.
C) weak base.
D) strong acid.
  • 14. A substance that ionizes or dissociates into ions when placed in water is always a(an)
A) electrolyte
B) conductor.
C) strong acid.
D) strong base.
  • 15. Which of the following are examples of strong electrolytes?
A) weak acids and weak bases
B) pure water and buffers
C) strong and weak bases
D) strong acids and strong bases
  • 16. What is the process in which an unstable atomic nucleus emits charged particles or energy or both?
A) radioactivity
B) decomposition
C) none of these
D) oxidation
  • 17. Uranium-238 undergoes alpha decay. Therefore, uranium-238 will
A) remain stable
B) none of these
C) emit neutral particles and no energy
D) change into a different element altogether
  • 18. What type of nuclear decay releases energy but not a particle?
A) electron decay
B) alpha decay
C) gamma decay
D) beta decay
  • 19. Which of the following statements is NOT true?
A) all natural radiation is at a level low enough to be safe
B) you are exposed to nuclear radiation every day
C) most of the nuclear radiation you are exposed to occurs naturally in the environment
D) naturally occuting nuclear radiation is called background radiation
  • 20. Alpha-emitting substances, such as radon gas, can be a serius health hazard only if
A) exposure to them is external
B) they are inhaled or eaten
C) their radiation strikes the skin
D) none of these
  • 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 is much greater than the electric force.
B) the electric force is much greater thatn the strong nuclear force.
C) the strong nuclear force and the electric force are both attractive.
D) the strong nuclear force equals the electric force.
  • 22. The strong nuclear force felt by a single proton in a large nucleus
A) is much less than that flet by a single proton in a small nucleus
B) is about the same as that felf by a single proton in a small nucleus
C) is about the same as the elctric force felt by a single proton proton in a small nucleus
D) is much greater than that felt by a single protom in a small nucleus
  • 23. During nuclear fission, great amounts of energy are produce from
A) very small amounts of mass
B) a series of chemical reactions
C) tremendous 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) all of these
C) nuclear power plants do not pollute the air
D) nuclear power plants produce more stable wastes compared to fossil fuel combustion
  • 25. Which of the following is NOT an advantabe of using a fusion reaction instead of a fission reaction to produce energy?
A) Fusion reactors require less energy than fission reactors do.
B) No harmful waste products are produced.
C) Workers are not in as much danger from radiation.
D) Hydrogen is used, and hydrogen is easily obtained from water.
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