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1. Fog is an example of a colloid.
2. A colloid is a type of mixture where small particles are dispersed throughout a medium. In the case of fog, tiny water droplets are suspended in the air. This creates a cloudy or misty appearance.
3. Unlike solutions where the particles are completely dissolved and do not scatter light (like sugar dissolved in water) and suspensions where particles settle out over time (like muddy water), colloids have particles that are intermediate in size between solutions and suspensions. Fog fits this description because the water droplets are dispersed but do not settle out quickly.
In summary, fog is considered a colloid because it consists of small water droplets dispersed in the air, creating a misty appearance.
