Diffusion

Topic Content:

What is Diffusion?

Diffusion is defined as the movement of molecules of a substance from a region of higher concentration to a region of lower concentration down a concentration gradientA concentration gradient occurs in a solution or gas when the concentration of particles is higher in one area than in another. More.

A concentration gradient occurs when the concentration of particles is higher in one area than in another.

Diffusion is an important process for living things; it is how substances move in and out of cells.

Factors that Affect the Rate of Diffusion:

The rates at which substances diffuse through a cell wall or cell membrane will depend on:

i. Temperature.
ii. Concentration.
iii. Distance
iv. Size of its molecules or ions.
v. The surface area across which the diffusion is occurring.
vi. State of matter.

i. Temperature:

Higher temperature increases the kinetic energyEnergy is the ability to do work. Energy exists in several forms such as heat, kinetic or mechanical energy, light, potential energy, and electrical energy. Units of Energy: The SI unit... More of the molecules. The higher the temperature,