Here's why:
* Polarity: Water molecules are polar, meaning they have a slightly positive end (the hydrogen atoms) and a slightly negative end (the oxygen atom).
* Attraction: The slightly positive hydrogen end of one water molecule is attracted to the slightly negative oxygen end of another water molecule.
* Weak Bond: This attraction is called a hydrogen bond, and it is a weak type of bond compared to covalent bonds.
Hydrogen bonds are crucial for the properties of water, including its high boiling point, surface tension, and ability to act as a solvent.
