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Advanced Physics
Warm Water is Lighter than Cold Water Objective To visualize warm water is lighter than cold water. Introduction When two immiscible liquids of unequal densities are kept in a container, the less dense liquid will float on the other. But what if the liquids are miscible? Can water float on water? Yes it can.

Warm Water is Lighter than Cold Water Objective To visualize warm water is lighter than cold water. Introduction When two immiscible liquids of unequal densities are kept in a container, the less dense liquid will float on the other. But what if the liquids are miscible? Can water float on water? Yes it can.

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Kindly Answer the observation ad conclusion of the experiment. Even if it is your guess.
Experiment #3 Warm Water is Lighter than Cold Water Objective To visualize warm water is lighter than cold water. Introduction When two immiscible liquids of unequal densities are kept in a container, the less dense liquid will float on the other. But what if the liquids are miscible? Can water float on water? Yes it can. Apparatus A glass tumbler, few drops of red ink, coffee heater Procedure Take water in a glass tumbler filling it nearly up to the brim (say 90\% of height). Put a drop of red ink on the surface of water and watch how the red color spreads in water. Ink is heavier than water and it should sink, but it mixes in water because of Brownian motion. Now take fresh water in the glass. Put a coffee heater on its rim in a vertical position so that it reaches up to half the depth of the tumbler. Put the heater on for few seconds and well before water boils, put it off and remove it gently. Don't disturb the glass and put a drop of red ink on the surface of water. Study how the ink spreads. It will quickly mix up in the upper hot water and will not go to the lower cold water. This shows that the hot water floats on cold water and does not get mixed up. Discussion Cooling a substance causes molecules to slow down and get slightly closer together, occupying a smaller volume that results in an increase in density. Hot water is less dense and will float on room-temperature water. Cold water is denser and will sink in room-temperature water. Observation: Conclusion:
Transcribed Image Text:Experiment #3 Warm Water is Lighter than Cold Water Objective To visualize warm water is lighter than cold water. Introduction When two immiscible liquids of unequal densities are kept in a container, the less dense liquid will float on the other. But what if the liquids are miscible? Can water float on water? Yes it can. Apparatus A glass tumbler, few drops of red ink, coffee heater Procedure Take water in a glass tumbler filling it nearly up to the brim (say 90\% of height). Put a drop of red ink on the surface of water and watch how the red color spreads in water. Ink is heavier than water and it should sink, but it mixes in water because of Brownian motion. Now take fresh water in the glass. Put a coffee heater on its rim in a vertical position so that it reaches up to half the depth of the tumbler. Put the heater on for few seconds and well before water boils, put it off and remove it gently. Don't disturb the glass and put a drop of red ink on the surface of water. Study how the ink spreads. It will quickly mix up in the upper hot water and will not go to the lower cold water. This shows that the hot water floats on cold water and does not get mixed up. Discussion Cooling a substance causes molecules to slow down and get slightly closer together, occupying a smaller volume that results in an increase in density. Hot water is less dense and will float on room-temperature water. Cold water is denser and will sink in room-temperature water. Observation: Conclusion:
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