Here's a breakdown:
* Diffusion: The spontaneous movement of particles from an area of high concentration to an area of low concentration. This movement continues until the concentration of the substance is equal throughout the system.
* Concentration: The amount of a substance per unit volume.
* Higher to Lower: Particles naturally move from where they are more crowded (high concentration) to where they are less crowded (low concentration).
Examples of diffusion:
* Sugar dissolving in water: Sugar molecules diffuse from the sugar crystals (high concentration) into the water (low concentration) until the sugar is evenly distributed.
* Perfume spreading in a room: The fragrance molecules diffuse from the perfume bottle (high concentration) throughout the room (low concentration).
* Oxygen moving into your blood: Oxygen diffuses from the air in your lungs (high concentration) into your bloodstream (low concentration).
Important Note: Diffusion is a passive process, meaning it doesn't require energy. The movement of particles is driven by the natural tendency to reach equilibrium (equal concentration) throughout the system.
