What is diffusion in simple words?

Diffusion is a process where molecules of a material move from an area of high concentration (where there are many molecules) to an area of low concentration (where there are fewer molecules)until it has reached equilibrium (molecules evenly spread).

What does diffusion occur through?

When this happens, the particles collide, which in turn makes them change directions. The process of diffusion occurs on its own without any help from shaking or stirring. However, solids will not undergo diffusion because the particles are very tightly packed together.

Why diffusion is caused?

Diffusion is the net movement of anything (for example, atoms, ions, molecules, energy) generally from a region of higher concentration to a region of lower concentration. Diffusion is driven by a gradient in Gibbs free energy or chemical potential.

Where does simple diffusion occur?

Simple passive diffusion occurs when small molecules pass through the lipid bilayer of a cell membrane. Facilitated diffusion depends on carrier proteins imbedded in the membrane to allow specific substances to pass through, that might not be able to diffuse through the cell membrane.

Where does diffusion occur in plants?

Diffusion and the leaf The higher concentration of carbon dioxide in the air around the plant causes the gas to move into the leaf by diffusion. It diffuses through small pores called stomata. The stomata are mainly in the lower epidermis (the underneath surface) of leaves.

What is diffusion in science class 9?

Diffusion- The mixing of a substance with another substance due to the motion or movement of its particles is called diffusion. It is one of the properties of materials. The diffusion of one substance into another substance goes on until a uniform mixture is formed.

How does diffusion occur in liquids?

Diffusion occurs in liquids and gases when their particles collide randomly and spread out. Diffusion is an important process for living things – it is how substances move in and out of cells.

How does diffusion occur in solids?

Diffusion can take place in gases, liquids, or solids. In solids, particularly, diffusion occurs due to thermally-activated random motion of atoms – unless the material is at absolute zero temperature (zero Kelvin), individual atoms keep vibrating and eventually move within the material.

What is required for simple diffusion to occur?

Simple diffusion does not require energy and occurs along the concentration gradient. In the human body, molecules, such as water, oxygen, carbon dioxide, ethanol and urea, pass directly through the cell membrane into and out of a cell using simple diffusion. Remember, this does not require energy.

Where does diffusion occur in everyday life?

Perfume is sprayed in one part of a room, yet soon it diffuses so that you can smell it everywhere. A drop of food coloring diffuses throughout the water in a glass so that, eventually, the entire glass will be colored.

What is diffusion in chemistry?

diffusion, process resulting from random motion of molecules by which there is a net flow of matter from a region of high concentration to a region of low concentration. A familiar example is the perfume of a flower that quickly permeates the still air of a room. ion diffusion across a semipermeable membrane.

What are the factors that affect diffusion?

Rate of diffusion is influenced by several factors including temperature, concentration difference and particle size. The diffusion rate is also affected when there is a change in distance between the points where diffusion occurs.

What must there be for diffusion to occur?

Diffusion occurs due to random kinetic energy in the molecules. Net diffusion will always occur. from high to low concentration. When there are areas of high and low concentration of solute, a concentration gradient exists.

What is the end result of diffusion?

The result of diffusion is a gradual mixing of material such that the distribution of molecules is uniform. Since the molecules are still in motion, but an equilibrium has been established, the end result of molecular diffusion is called a “dynamic equilibrium”. Click to see full answer.

What is required for a facilitated diffusion to occur?

The main factors affecting the process of facilitated diffusion are: Temperature- As the temperature increases, the movement of the molecules increases due to an increase in energy. Concentration- The movement of the molecules takes place from the region of higher concentration to lower concentration. Diffusion Distance- The diffusion rate is faster through smaller distance than through the larger distance.