Why do Hydrogen bonds make water so cohesive?

Answer 1

Because every water molecule can potentially form a hydrogen bond with many other molecules. And those bond with others. And so on.

The bonds aren't strong enough to fuse it into a solid (well... unless it's cold), but they do help really pack the molecules close together.

Interestingly, though a single molecule might have up to four hydrogen bonds in theory, all the molecules would have to move apart slightly to accomodate all those bonds because of the water molecule's shape. This is why ice is less dense than water even though most solids are more dense than liquids. It also helps water be extra-cohesive: it WANTS to form a lot of hydrogen bonds, but can't have stable ones because of heat, pressure, and the like. They are constantly forming and breaking up.

Answer 2

Well the hydrogen bonds are the primary intermolecular bonds between the molecules. Cohesion is defined as how strongly the molecules of substance attract eachother, so the more hydrogen bonds the stronger the cohesion (with surface tension as a product). Since each molecule of water forms 2 hydrogen bonds with other molecules, the total number and strength of the intermolecular forces are particularly high making it possess a high degree of cohesion.

Answer 3

becuase water has both a positive side and a negative side the postive hydrogen bonds on the water molecules are attracted to the negative sides of other water molecules. Its this attraction and bond that makes water cohesive.

Answer 4

One reason is that every single water molecule can form Hydrogen bonds with FOUR other water molecules.
The original oxygen attracts two hydrogens, each original hydrogen can link to a separate oxygen.
Times this force by billions and billions of molecules and water takes on many of its special characteristics.
Like, surface tension, expanding instead of contracting when becomeing a solid, High heat capacity, etc.

Answer 5

In molecules of water, the oxygen atoms have a stronger electronegativity than do the hydrogen atoms. consequently, the oxygen atom has a partial detrimental cost linked with it, and each hydrogen atom has a partial useful cost. A hydrogen bond is in simple terms the charm between the partial detrimental cost of one water molecule with the partial useful cost in yet another. because of the fact those hydrogen bonds are a rather solid interplay, water molecules cohere with one yet another. In liquid water, each and every water molecule has between 3 and four hydrogen bonds to adjoining water molecules at any instant.