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sesenic [268]
3 years ago
13

Water molecules are attracted to the molecules in the wall of the glass container

Biology
1 answer:
iren [92.7K]3 years ago
3 0
That's because both H2O molecules and 'glass molecules', more precisely an enormous lattice of silica oxide, are polar. The surface of the glass consists of unsaturated oxygen atoms which can form H- bonding with the water molecules, giving that U shape you are seeing when you put water in a narrow cylinder. 
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