- #1
Diffusion can occur in solid substances, although it is usually slower than in liquids or gases. This is because the particles in a solid are more tightly packed and have less freedom to move around.
The rate of diffusion is affected by several factors, including temperature, concentration gradient, and molecular weight. Higher temperatures, steeper concentration gradients, and smaller molecular weights all tend to increase the rate of diffusion.
Diffusion is a form of passive transport, meaning it does not require the input of energy. It occurs naturally as particles move from an area of higher concentration to an area of lower concentration.
No, diffusion cannot occur in a vacuum because it requires the presence of particles to move from one area to another. In a vacuum, there are no particles present to facilitate diffusion.
Diffusion and osmosis are both forms of passive transport, but they differ in that diffusion is the movement of particles from an area of higher concentration to an area of lower concentration, while osmosis specifically refers to the movement of water molecules across a semi-permeable membrane.
