ELI5: Explain Like I'm 5

Non-covalent interactions

Hey kiddo, do you know how magnets can stick to the fridge even though there’s no glue or tape holding them there? That’s kind of like non-covalent interactions.

So, everything in the world is made up of tiny particles called atoms. And, these atoms can stick together to make bigger molecules. When atoms stick together, they can do it in one of two ways: either by sharing electrons (covalent bonds) or by just being attracted to each other (non-covalent interactions).

Non-covalent interactions happen between atoms or molecules that have slight electrical charges. You know how sometimes you can rub your hair against a balloon and it will stick to the wall? That’s because your hair has a slight electric charge and so does the balloon. They’re attracted to each other, just like how opposite magnets can stick together.

There are different types of non-covalent interactions. For example, there’s something called hydrogen bonding. You know how sometimes water droplets stick together on a window? That’s because the water molecules are attracted to each other through hydrogen bonds.

Another type of non-covalent interaction is called van der Waals interactions. This is when atoms or molecules have temporary slight electrical charges that cause them to be attracted to each other. It’s kind of like how when you wear a fuzzy sweater and then rub it against something, it can create static electricity that makes your hair stand up.

So, non-covalent interactions are just a way that atoms and molecules can stick together without sharing electrons. It’s like magnets or static electricity, where things are attracted to each other because of slight electrical charges.