protons
Resources
TED-Ed: How Does a Particle Accelerator Work?
An atom smasher, or particle accelerator, collides atomic nuclei together at extremely high energies, using engineering that exploits incredibly cold temperatures, very low air pressure, and hyperbolically fast speeds. Don Lincoln explains how scientists harness the power of both electric and magnetic fields to smash atoms, eventually leading to major discoveries about the matter in our universe.
PhET: Build a Nucleus
How does changing the number of neutrons or protons affect the nuclear species, the stability of a nucleus, and its possible decay mechanisms? Explore different species, and learn about the common decay paths! Visualize these through the chart of the nuclides and discover the inner energy levels of the nucleus.
PhET: Build an Atom
Build an atom out of protons, neutrons, and electrons, and see how the element, charge, and mass change. Then play a game to test your ideas!