diffusion

Topics: Diffusion, Osmosis, Thermodynamics Pages: 4 (828 words) Published: October 11, 2013

Diffusion

Introduction

Diffusion is the net movement of ions or molecules from a region of high concentration to a region of low along the concentration gradient until equilibrium has been reached. The steeper the gradient the faster the rate of diffusion. There are a few types of diffusion. Three (3) of those are:

Facilitated Diffusion- refers to diffusion of substances across a cell membrane with the help of transport protein. Dialysis- refers to the diffusion of solutes across a semipermeable membrane. Osmosis- refers to the diffusion of the solvent across semipermeable membrane. The concept of diffusion is widely used in physics (particle diffusion), chemistry, biology, sociology, economics, and finance (diffusion of people, ideas and of price values). Some factors affecting diffusion are concentration gradient, temperature, pressure, size of particles and surface area to volume ratio. The food coloring in room temperature water will spread evenly after fifteen (15) minutes. Diffusion is the net movement of ions or molecules from a region of high concentration to a region of low along the concentration gradient until equilibrium has been reached. The steeper the gradient the faster the rate of diffusion. There are a few types of diffusion. Three (3) of those are:

Facilitated Diffusion- refers to diffusion of substances across a cell membrane with the help of transport protein. Dialysis- refers to the diffusion of solutes across a semipermeable membrane. Osmosis- refers to the diffusion of the solvent across semipermeable membrane. The concept of diffusion is widely used in physics (particle diffusion), chemistry, biology, sociology, economics, and finance (diffusion of people, ideas and of price values). Some factors affecting diffusion are concentration gradient, temperature, pressure, size of particles and surface area to volume ratio. The food coloring in room temperature water will spread evenly after fifteen (15) minutes. Diffusion is the...
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