Density Paradox Set

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Density Paradox Set

2 blue stoppers next to 2 beakers of water one with heated water and one with ice cold water

PIRA: 2B40.05

Materials: Hot Water in a beaker, Ice Cold Water in beaker, Density Paradox Plastic Stoppers

This demo is to show how items can become more or less dense by becoming hot or cold. Usually the density is not very much, but these plastic stoppers are special material that greatly expand and contract depending on temperature. This is what allows the plastic stopper to initially sink in hot water then float after time. Then in cold water they initially float then sink.