What are oxygen molecules gain electrons?

Oxygen molecules gain electrons when they receive tiny bits of energy from other particles around them.

Think of oxygen molecules like hungry little creatures in a playground. They’re always looking for something to eat, and the best snack they can find is an electron, which is like a tiny, energetic ball that they really enjoy munching on.

Imagine you're playing with your friend, who has a big bag of candy. If your friend gives you some candy, you become happier and more energized, just like oxygen molecules when they get electrons. The electrons make them more stable, which means they can do their job better in the body or in nature.

Sometimes, other molecules are excited and give away electrons because they want to be more relaxed. Oxygen is happy to accept those electrons and become even more content, it's like getting a second snack after lunch!