imagine a snowflake in your hand, and you look at it, and it's an incredibly complicated, beautiful object. But as you heat it up, it'll melt into a pool of water, and you would be able to see that, actually, it was just made of H20, water.
Imaginen a un copo de nieve en su mano, y lo observan, y es un objeto increíblemente complicado y hermoso. Pero cuando lo calientan, se derrite en un charco de agua, y serías capaz de ver que en realidad estaba hecho solamente de H20, agua.