Multiple choice

Diffusion is very fast in _______.

  1. solids

  2. liquids

  3. gases

  4. none of these

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Diffusion occurs fastest in gases because gas molecules have the most kinetic energy and are far apart, allowing rapid random movement. In liquids, diffusion is slower due to stronger intermolecular forces. In solids, diffusion is extremely slow as particles are fixed in position.