So, you know how sometimes you eat food and it gives you energy to play and run around? Well, that's because when you eat food, your body breaks it down into tiny pieces called molecules. And when those molecules break apart, they release energy that your body can use.
That's kind of like what happens in an exergonic reaction. It's an important type of chemical reaction where big molecules break down into smaller ones, and as they break apart, they release energy just like when you eat your food.
But not all chemical reactions are exergonic. Some, like endergonic reactions, actually need energy to happen. It's kind of like when you want to build a big tower with your blocks. You need to use a lot of energy to stack them up higher and higher.
So, exergonic reactions are like when you break things down and get energy, and endergonic reactions are like when you build things up and need energy. Both are important, but exergonic reactions are what give us the energy we need to live and play!