Question

explain diffusion phenomenon based on states of matter

Answer 1

Diffusion is the net movement of molecules or atoms from a region of high concentration (or high chemical potential) to a region of low concentration (or low chemical potential). This is also referred to as the movement of a substance down a concentration gradient. A gradient is the change in the value of a quantity (e.g., concentration, pressure, temperature) with the change in another variable (usually distance). For example, a change in concentration over a distance is called a concentration gradient, a change in pressure over a distance is called a pressure gradient, and a change in temperature over a distance is a called a temperature gradient. The word diffusion is derived from the Latin word, "diffundere", which means "to spread out" (if a substance is “spreading out”, it is moving from an area of high concentration to an area of low concentration). A distinguishing feature of diffusion is that it results in mixing or mass transport, without requiring bulk motion (bulk flow). Thus, diffusion should not be confused with convection, or advection, which are other transport phenomena that utilize bulk motion to move particles from one place to another.

Answer 2

Diffusion is possible only when particles of matter moves continuously.Particles of solids, liquids and gases can diffuse into liquids and gases. Rate of diffusion of gases is is higher than liquids while the rate of diffusion of liquids is higher than solids.The greater diffusion rate in liquids compared to solids is because particulates in liquids more freely and have greater space between them compared to particles of solids.

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