Question

_______ is a process of gradual mixing of two substances kept in contact with each other.

Answer 1

Diffusion:

1. Diffusion is the process in which substances get mixed with each other without any external force.
2. When different types of substances are placed together, they mixed with each other automatically, this is diffusion.
3. Diffusion may be a process of gradual mixing of two substances kept in touch with one another.

Criteria for diffusion:

1. Particles of the substance must be in motion.
2. Substances are placed in contact with each other.

Factors affecting diffusion:

1. Temperature: The diffusion rate increases, as temperature increases.
2. Area of interaction: More is the area of contact, and more is the diffusion.
3. Concentration gradient(difference in concentration): Higher the concentration gradient, the faster is diffusion.
4. Size of particles: Smaller the particle size, the more is the diffusion.

Therefore, Diffusion is a process of gradual mixing of two substances kept in contact with each other.