Answer to Question #52250 in Physical Chemistry for vi

Question

A liquid will "wet" a surface if:
the liquid has a lesser density than the surface
the forces between the liquid molecules are weak
the liquid has a low vapor pressure
the forces between the molecules and the surface are greater than the forces between the molecules of the liquid
8 Which of the followings does NOT influence the magnitude of surface tension?
Hydrogen bonds
Metallic bonding
Ionic bonding
Dispersion forces
9 Which of the following is true when ice melts?
a phase change occurs from a solid phase to liquid phase
an endothermic process occurs which requires energy
the water changes from a crystalline solid to a liquid
all of the above
10 Which of the following is true when water freezes?
a phase change occurs from a liquid phase to a solid phase
an exothermic process occurs where energy is lost from ice to the surroundings
the liquid water changes from a random structure to a crystalline solid
all of the above

Answer 1

the forces between the molecules and the surface are greater than the forces between the molecules of the liquid
Dispersion forces
all of the above
all of the above