Here's a breakdown of diffusion:
* Solutes: These are the substances dissolved in a solvent (like water).
* Concentration: This refers to the amount of solute present in a given volume of solvent.
* Net movement: This means that more solute particles move from the high concentration region to the low concentration region.
* Lower concentration: This is the area where there are fewer solute particles present.
Why does diffusion occur?
Diffusion happens because of the random movement of molecules. Molecules are constantly in motion, colliding with each other and bouncing around. When there's a concentration gradient (difference in concentration), there's a higher probability that molecules will move from the area of higher concentration to the area of lower concentration, simply because there's more space for them to move into.
Key points about diffusion:
* It's a passive process, meaning it doesn't require energy.
* It continues until the concentration of the solute is equal throughout the solution (equilibrium).
* It's important for many biological processes, such as the transport of oxygen and nutrients in the body.
Let me know if you have any other questions about diffusion!
