Q1 Properties of liquid

Question 1

is the tendency of a fluid to acquire
the least possible surface area.

Answer 1

surface tension

Question 2

is the attraction between like molecules

Answer 2

cohesion

Question 3

is the attraction between unlike
molecules.

Answer 3

adhesion

Question 4

is the measure of a fluid’s resistance to flow.

Answer 4

Viscosity

Question 5

Liquids that flow easily have ______ viscosity while liquids
that do not flow readily have _____ viscosity.

Answer 5

low
high

Question 6

Molecules with _________ have
greater resistance to flow because it is difficult for the
molecules to move and slide past one another.

Answer 6

strong intermolecular forces

Question 7

Viscosity is also affected by

Answer 7

temperature

Question 8

is the process where a fraction of the
kinetic energy of a liquid escapes from the surface to
enter the vapor phase.

Answer 8

vaporization

Question 9

also called the
heat of vaporization, is the heat required to induce
this phase change.

Answer 9

enthalpy of vaporization

Question 10

enthalpy of vaporization is also called as

Answer 10

heat of vaporization

Question 11

Vaporization occurs more readily with:

Answer 11

increased temperature
increased surface are of a liquid
decreased strength of intermolecular forces

Question 12

is the quantity of heat
that must be absorbed if a certain quantity of liquid is
vaporized at a constant temperature.

Answer 12

enthalpy of vaporization

Question 13

is the pressure exerted by a vapor in
equilibrium with its liquid phase in a closed system.

Answer 13

vapor pressure

Question 14

refers to the ability of a substance to
dissolve in a given amount of solvent at a specified
temperature.

Answer 14

solubility

Question 15

If two liquids dissolve or mix together, they are called

Answer 15

miscible

Question 16

If two liquids do not dissolve or mix together, they are
called

Answer 16

immiscible

Question 17

Substances or molecules that form interactions with
water are also described as

Answer 17

hydrophilic

Question 18

Substances or molecules that repel water are
described as

Answer 18

hydrophobic

Question 19

Molecules with both hydrophilic and hydrophobic
regions are known as

Answer 19

amphipathic

Question 20

is the temperature at which a substance
changes from liquid to gas

Answer 20

boiling point

Question 21

happens when the molecules of a liquid gain
enough energy to overcome the intermolecular forces of
attraction that hold the molecules together.

Answer 21

boiling