Eli5: Why does splitting an atom cause such a giant explosion?

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Where does all the energy come from?

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Anonymous 0 Comments

When atoms were born they were all the same, hydrogen atoms, one proton, one electron… that’s it.

But they had gravity and they grouped together forming stars. A star is when all this atoms group in a gigantic ball, but the ball gets too big, the pressure inside compress the hydrogen and they fuse together. This makes a lot of energy. This energy heats all the star and a billion year fusion reaction starts. Inside, it’s a gigantic mess. Atoms love to get bigger, but not too big. They keep fusing one into another forming bigger and bigger boring atoms like iron. But some atoms by chance are fused with other ones too much and that makes big angry atoms like uranium, a very big atom with too many protons and neutrons inside. Protons and neutrons don’t like to be pressed together in so little space and they want to separate, but they don’t have enough force, just a little too weak to divide.

Then the star explodes and shoots all this atoms around the space.

Some days later, actually not days, billions of billions of day, this atoms are again together because of gravity, and form a planet. A planet with water. And this planet makes animals and some are intelligent and at a certain point a scientist figures out that atoms love to get big but not too big. And had the idea to take the very big atoms and give them a chance to separate into smaller ones.

When they separate they release part of the gigantic energy that was shot into them when they were made.

Idk why atoms would love to be iron (they like to fuse together to make it or split to make it) most will never be iron, but they want to. But anyway it’s a fact, I just don’t know why.

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