ELI5: Explain Like I'm 5

Noncovalent bonding

Noncovalent bonding is like when two magnets come together. The magnets are attracted to each other, even though they don't "touch." In noncovalent bonding, the molecules are attracted to each other even though they don't touch. The attraction happens because the molecules share electrons, which makes them stick together like magnets. This kind of bond is very weak compared to covalent bonding, which is when molecules share electrons and make a much stronger connection.