Question

When the molecules of any substance move away from a region of their higher concentration to a region of lower concentration it is known as

Answer 1

Answer: Diffusion

Explanation: When the molecules of any substance move from a region of higher concentration to a region of lower concentration is known as diffusion. It is type of passive transport in which particles move from higher to lower region without the use of energy. This movement continues until the concentration of substances is same in the whole region. For example. When we spray at one corner of the room after awhile the smell of perfume reaches to other corner of the room.

Answer 2

When the molecules of any substance move away from a region of their higher concentration to a region of lower concentration it is known as Diffusion.

• Diffusion can always happen in liquid and gaseous phase.
• There are several process which happen due to diffusion
• For example- Water circulation in plant.