evaporation. The particles in a gas are separated by much larger spaces than the particles in a liquid or a solid. Therefore, a gas is mostly empty space. Since the particles are moving constantly in all directions, they spread throughout their container, no matter what volume or shape their container is.
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Answer:
evaporation. The particles in a gas are separated by much larger spaces than the particles in a liquid or a solid. Therefore, a gas is mostly empty space. Since the particles are moving constantly in all directions, they spread throughout their container, no matter what volume or shape their container is.