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