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