The intermixing of particles of two different types of matter on their own is called 

The correct answer is Diffusion

Explanation:

• Diffusion is the process by which particles of one substance spread out and mix with particles of another substance without any external force.
• This process occurs due to the random movement of particles, leading to their spontaneous intermixing.
• Diffusion involves the movement of molecules from an area of higher concentration to an area of lower concentration directly through the lipid bilayer without the assistance of any other molecules.
• It does not require energy or specific interaction with membrane proteins.

Other Options:

• Osmosis: This is a specific type of diffusion that involves the movement of water molecules through a semipermeable membrane from a region of lower solute concentration to a region of higher solute concentration. It is not a general mixing of different types of matter.
• Brownian motion: This refers to the random movement of particles suspended in a fluid (liquid or gas) resulting from their collision with fast-moving molecules in the fluid. While it involves particle movement, it does not describe the intermixing of different types of matter.
• Conductance: This term refers to the ability of a material to conduct electric current. It is not related to the mixing of different types of matter.