Brownian motion refers to the irregular movement of tiny particles in a liquid or gas. Which statement concerning Brownian motion is correct?
- ABrownian motion only occurs when the liquid or gas is heated.
- BMuch heavier fast-moving particles that cannot be seen collide with the microscopic particles.
- CMuch lighter fast-moving particles that cannot be seen collide with the microscopic particles.
- DThe microscopic particles move to avoid the fast-moving liquid or gas molecules.