Does the smallest particle exist, if so, from what is it made? THANKS FOR EVERY ANSWER
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Protons and neutrons appear to be made of smaller particles called quarks. Theoretical physics suggests the smallest particles are vibrating strings of pure energy. This will probably only remain a theory because the strings are so small it is probably impossible to actually prove they exist. There are a number of larger particles known to exist. Neutrinos are so small it was once thought they had no mass. Photons have no mass but appear to be both matter and energy simultaneously.
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Yes, there are Quarks , Pi-Mesons which are much smaller elementary particles.