======Hot Water Condensation====== **Materials: **{{$demo.materials_description}}\\ **Difficulty: **{{$demo.difficulty_description}}\\ **Safety: **{{$demo.safety_description}}\\ \\ **Categories:** {{$demo.categories}} \\ **Alternative titles:** Water Cycle Condensation ====Summary==== {{$demo.summary}} ====Procedure==== - Boil water and carefully pour it into a transparent plastic cup until it is two-thirds full. - Place a second cup upside down over the hot water cup. - Balance an ice cube on top of the inverted cup. - Watch closely as condensation forms inside the upper cup. - Observe how small droplets gradually combine into larger ones, mimicking how clouds form. ====Links==== Condensation Experiment | The Water Cycle - Hannah Leake: {{youtube>iSJ_NRcVjpg?}}\\ ====Variations==== * Try using multiple ice cubes to see if condensation increases. * Test with warm water instead of hot to compare how quickly condensation occurs. ====Safety Precautions==== * Handle boiling water carefully to avoid burns. * Adult supervision required for younger students. * Ensure the cup with hot water is stable to prevent spills. * Be cautious when balancing the ice cube to prevent slipping accidents. ====Questions to Consider==== * Why does condensation form inside the second cup? (Because water vapor from the hot water cools against the cold surface, turning back into liquid droplets.) * How is this similar to cloud formation? (Clouds form when warm, moist air rises, cools, and condenses into water droplets.) * What would happen if you used cold water instead of hot? (Much less vapor would form, so condensation would be minimal or absent.) * Why do the small droplets eventually merge into larger ones? (Water molecules attract each other, causing droplets to coalesce.)