A) a solid must dissolve in a liquid B) one substance must dissolve in another. C) a gas must dissolve in a liquid. D) the solvent must be water.
A) neither released nor absorbed. B) absorbed only. C) released only. D) either released or absorbed.
A) greater than the energy released as attractions form between solute and solvent particles. B) equal to the heat of solution. C) equal to the energy released as attractions form between solute and solvent particles. D) less than the energy released as attractions form between solute and solvent particles.
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
A) The salt dissolved most quickly in the warm water. B) None of the above C) The salt dissolved most quickly in the room-temperature water. D) The salt dissolved most quickly in the ice water.
A) supersaturated. B) saturated. C) unsaturated. D) concentrated.
A) tastes sour B) usually reacts with a metal C) changes the color of an indicator D) feels slippery
A) lime B) tomato C) orange D) celery
A) hydrogen ions in solution. B) hydroxide ions in solution. C) sodium ions in solution. D) hydronium ions in solution.
A) tastes bitter B) feels slippery C) changes colors of indicators D) reacts with metals
A) HCl and Mg(OH)2 B) MgCl2 and H2O C) HCl and MgOH D) MgCl and H2O
A) both a proton donor and a proton acceptor. B) a proton acceptor. C) a proton donor. D) neither a proton donor nor a proton acceptor.
A) strong acid. B) strong base. C) weak base. D) weak acid.
A) strong acid. B) conductor. C) electrolyte D) strong base.
A) weak acids and weak bases B) strong and weak bases C) strong acids and strong bases D) pure water and buffers
A) radioactivity B) none of these C) decomposition D) oxidation
A) remain stable B) none of these C) emit neutral particles and no energy D) change into a different element altogether
A) gamma decay B) alpha decay C) beta decay D) electron decay
A) all natural radiation is at a level low enough to be safe B) most of the nuclear radiation you are exposed to occurs naturally in the environment C) you are exposed to nuclear radiation every day D) naturally occuting nuclear radiation is called background radiation
A) exposure to them is external B) none of these C) their radiation strikes the skin D) they are inhaled or eaten
A) the electric force is much greater thatn the strong nuclear force. B) the strong nuclear force and the electric force are both attractive. C) the strong nuclear force is much greater than the electric force. D) the strong nuclear force equals the electric force.
A) is about the same as that felf by a single proton in a small nucleus B) is much less than that flet by a single proton in a small nucleus C) is much greater than that felt by a single protom in a small nucleus D) is about the same as the elctric force felt by a single proton proton in a small nucleus
A) tremendous amounts of mass B) a series of chemical reactions C) very small amounts of mass D) particle accelerators
A) all of these B) nuclear power plants do not pollute the air C) nuclear power plants produce more stable wastes compared to fossil fuel combustion D) nuclear power plants produce wastes that are easy to dispose of
A) Fusion reactors require less energy than fission reactors do. B) Workers are not in as much danger from radiation. C) Hydrogen is used, and hydrogen is easily obtained from water. D) No harmful waste products are produced. |