Water has one of the slowest evaporation rates of any liquid due to hydrogen bonding between hydrogen atoms and the electronegative oxygen atoms. The molecules in water are not only bonded from within (the two hydrogen atoms are bonded to the single oxygen atom within each molecule), but are also held together VERY strongly by hydrogen bonds between the molecules themselves. These bonds form a very tangled network of molecules that takes a long time to dissolve. Alcohol molecules also form hydrogen bonds, but the carbon atoms in the molecules make it impossible for alcohol to be bonded to the extent that water is bonded.
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