Chemical bonds form when atoms interact with each other in a way that results in a more stable configuration. This stability is achieved through the sharing or transfer of electrons.

Here's a breakdown:

* Sharing of electrons: This occurs in covalent bonds. Atoms share their outermost electrons to achieve a full outer shell, which is a stable configuration. This sharing creates a strong attraction between the atoms.

* Transfer of electrons: This happens in ionic bonds. One atom loses one or more electrons to another atom, creating oppositely charged ions (cations and anions). These ions are then attracted to each other due to electrostatic forces, forming a bond.

Essentially, chemical bonds form to lower the potential energy of the system. This is why atoms bond to form molecules – it is energetically favorable for them to do so.

Here are some key points to remember:

* Chemical bonds are formed between atoms, not molecules.

* The type of bond that forms depends on the electronegativity difference between the atoms involved.

* Chemical bonds are responsible for the formation of all molecules and compounds.

I hope this helps!