how does water show expansion and contraction ?
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Water is one of the few exceptions to this behavior. When liquid water is cooled, it contracts like one would expect until a temperature of approximately 4 degrees Celsius is reached. After that, it expands slightly until it reaches the freezing point, and then when it freezes it expands by approximately 9%.
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Expansion and Contraction in Liquids When liquids are heated, their particles move around more, pushing each other apart slightly, causing the liquid to expand. As with solids, the amount of increase in volume depends on the type of liquid, but in general, liquids expand more than solids when heated.
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