Chemistry
Grade-9
Easy
Question
___________ is the process of gradual mixing of two substances kept in contact by molecular motion.
- Diffusion
- Inclusion
- Expansion
- Collision
Hint:
Movement of ions from lower concentration to a region of higher concentration.
The correct answer is: Diffusion
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. It is possible to diffuse "uphill" from a region of lower concentration to a region of higher concentration.
Diffusion is the process of gradual mixing of two substances kept in contact by molecular motion.
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