eli5: Why drops of water always form a circle/half ball shape?

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Even if you move it with a pencil it goes back to its original shape

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4 Answers

Anonymous 0 Comments

Water is made up of H2O … That’s actually two positive hydrogen atoms (H+) bonded to a negative oxygen atom (O-)

Due to electromagnetic forces, the hydrogens are sort of “flanking” the oxygen so they aren’t a straight line like this:
H
O
H

They are more in an angle like this:
H
O
H

That makes the “left” side in this diagram have a more positive charge and the “right” side have a more negative charge:
+H
O –
+H

Because water is polarized like this, it acts like little magnets and likes to stick together. Water is honestly so cool.

Also this is why when water freezes, it expands. Because instead of flowing and bouncing around, all the little magnets line up and create little gaps between each angle >>>>>

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