Why does ice float in water? - George Zaidan and Charles Morton
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Water is a special substance for several reasons, and you may have noticed an important one right in your cold drink: ice. Solid ice floats in liquid water, which isn't true for most substances. But why? George Zaidan and Charles Morton explain the science behind how how hydrogen bonds keep the ice in your glass (and the polar ice caps) afloat.
In our two-dimensional molecular picture of ice (at 2:30), how many hydrogen atoms surround every oxygen atom? How many oxygen atoms surround every hydrogen atom? But remember that real life is three-dimensional. Do some research and find the most molecular common structure of ice. Study it closely and figure out how many hydrogens surround each oxygen and how many oxygens surround each hydrogen. Is our 2D model a good approximation for the 3D reality? Why or why not?
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