Question

Diffusion experiment:

What would diffuse faster, a low molecular weight dye, or a high molecular weight dye?

Why did you need to keep refilling the dye in the well? Would it change your result if you ran out of dye during the experiment?

When diffusion occurs, there needs to be a difference of molecules in the two areas. Molecules move from high concentration to where they are in lower concentration. This is called what?

Answer 1

What would diffuse faster, a low molecular weight dye, or a high molecular weight dye?

A lower molecular dye will diffuse faster as lower the molecular weight more is the diffusion.

Why did you need to keep refilling the dye in the well? Would it change your result if you ran out of dye during the experiment?

Dye diffuses faster so we need to refill the dye in the well. The result will change as we will not be able to get the appropriate result.

When diffusion occurs, there needs to be a difference of molecules in the two areas. Molecules move from high concentration to where they are in lower concentration. This is called what?

When molecules move from the region of their higher concentration to the region of their lower concentration it is called as simple diffusion.