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