Molecular motion in liquids

Question 1

Define viscosity

Answer 1

Resistance of a liquid to flow

Question 2

How is viscosity affected by temperature?

Answer 2

Viscosity decreases as temperature increases due to Ek increasing and overcoming attractive forces

Question 3

Define diffusion coefficient (D)

Answer 3

Rate at which the molecules move through liquid

Question 4

How is diffusion coefficient affected by temperature?

Answer 4

D increases with temp - overcomes intermolecular forces