Answer the following multiple choice questions:
1. to form a solution,
a) one substance must dissolve in another
b) a solid must dissolve in a liquid
c) the solvent must be water
d) a gas must dissolve in a liquid.
2. a salt is dissolved in water, which has a boiling point of 100°c. the boiling point of the solution will be
a) greater than 100°c
b) less than 100°c exactly 100°c
c) exactly 0°c
3. during the formation of a solution, energy is
a) either released or absorbed
b) neither released nor absorbed
c) released only
d) absorbed only
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 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