Describe diffusion and give an everyday example.

Describe diffusion and give an everyday example.

• A. Particles move from low to high concentration; sugar dissolving.
• B. Particles move only when heated; color dissolving instantly.
• C. Particles do not move; water staying still.
• D. Particles move from high to low concentration due to random motion; perfume diffusing in a room.

Answer: (D)