Students can test the decays and observe that the net charge of all the products does in fact equal the charge on the original particle. The decay page shows a clickable menu of particles. When you click on the symbol for a particle, a decay is shown near the bottom of the page. You can clear the result, or you can click any symbol any number of times to observe more decays. Background Information Particle notation nearly matches the versions put forth by the Particle Data Group at Berkeley Lab.
Many antiparticles have a bar over their symbol.
Some particle-antiparticle pairs, however, are only distinguished by their signs. For example, the positive and negative pions are a particle-antiparticle pair, just like the proton and antiproton are. The result can be confusing. Just because a particle has a partner that is oppositely charged does not make it an antiparticle. For example, one kind of particle, the sigma, has six manifestations.