Lab 1 - Surface Tension & Diffusion

Question 2

force that acts to minimize the surface area of an interface between two fluids

Answer 2

surface tension

Question 3

substance which reduces the difference in energy possessed by a fluid molecule surrounded by other molecules of the same fluid compared to one at the interface which has to interact with molecules of the other fluid

Answer 3

surfactant

Question 4

soap molecules are blank because they have one end that interacts well with water and another that doesn’t

Answer 4

amphipathic

Question 5

amount of pressure inside the bubble (P) can be related to surface tension (T) and the radius of the bubble (r) by this equation

Answer 5

Laplace equation… P=2T/r

Question 6

Fick’s equation

Answer 6

J = -DA(dC/dx)

Question 7

J

Answer 7

net flux of a solute

Question 8

A

Answer 8

cross sectional area through which diffusion occurs

Question 9

dC/dx

Answer 9

concentration difference between two points separated by distance x

Question 10

D

Answer 10

diffusion coefficient for the diffusing molecule