The reason antimatter is "anti" is that an antiparticle has the opposite charge of its non-anti counterpart. Electrons have a negative charge, while their antiparticles, positrons have a positive charge. And since opposite charges attract, well, I think you can figure it out from there.

And yes, matter/antimatter interactions result in annihilation.

[–] Plibbert@lemmy.ml 7 points 2 years ago (10 children)

What exactly does "annihilation" mean in this context. Do both "atoms" give off energy and convert to sub atomic particles? Does one atom kind of "win" over the other and undergo fission instead of complete annihilation?

[–] TheOnlyMego@lemmy.world 4 points 2 years ago

For the simple case of electron-positron annihilation, they transform into high-energy photons, whose total energy is equal to the total mass-energy of the electron and positron. See: https://en.wikipedia.org/wiki/Electron%E2%80%93positron_annihilation

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