chpater 12

Question 1

liquid to solid

Answer 1

Freezing, exothermic

Question 2

solid to liquid

Answer 2

melting (fusion), endothermic

Question 3

liquid to gas

Answer 3

vaporization, endothermic

Question 4

gas to liquid

Answer 4

condensation, exothermic

Question 5

solid to gas

Answer 5

sublimation, exothermic

Question 6

gas to solid

Answer 6

deposition, endothermic

Question 7

as dipole moment decreases

Answer 7

boiling point decreases

Question 8

surface tension

Answer 8

the amount of energy required to increase the surface of a liquid by a unit of area

Question 9

cohesion

Answer 9

attractions between like molecules

Question 10

adhesion

Answer 10

attraction between unlike molecules

Question 11

viscosity

Answer 11

a measure of liquids resistance to flow (Temperature, intermolecular forces)

Question 12

vapor pressure

Answer 12

the partial pressure of a substance
(vaporization/evaporation)

Question 13

Dynamic equilibrium

Answer 13

occurs when a forward and reverse process are occurring at the same rate

Question 14

unit cell

Answer 14

the basic repeating structural unit of a crystalline

Question 15

capillary action

Answer 15

the movement of liquid up a narrow tube as the result of adhesive forces.

Question 16

supercooling

Answer 16

a phenomenon in which a liquid could be temporarily cooled to below its freezing point