What type of bond is primarily formed between water molecules?

The bond that is primarily formed between water molecules is the hydrogen bond. This type of bond occurs when the positively charged hydrogen atoms of one water molecule are attracted to the negatively charged oxygen atoms of another water molecule. This interaction is relatively weak compared to covalent bonds but plays a crucial role in determining the properties of water, such as its high surface tension, boiling point, and solvent capabilities.

In water (H₂O), each water molecule is held together by covalent bonds between the hydrogen and oxygen atoms, where electrons are shared. However, when we refer to interactions between water molecules themselves, we highlight hydrogen bonding. These hydrogen bonds are essential in many biological processes, such as protein folding and the structure of DNA. Understanding the significance of hydrogen bonds helps explain why water is often referred to as the "universal solvent" and why it exhibits unique physical properties compared to other substances.