Charged particle

In physics, a charged particle is a particle with an electric charge. For example, some elementary particles, like the electron or quarks are charged. Some composite particles like protons are charged particles. An ion, such as a molecule or atom with a surplus or deficit of electrons relative to protons are also charged particles.

A plasma is a collection of charged particles, atomic nuclei and separated electrons, but can also be a gas containing a significant proportion of charged particles.

Charged particles are labeled as either  positive (+) or negative (-). The designations are arbitrary. Nothing is inherent to a positively charged particle that makes it "positive", and the same goes for negatively charged particles.

Positively charged particles

 * protons
 * positrons (antielectrons)
 * alpha particles
 * positive charged ions
 * cations

Negatively charged particles

 * electrons
 * antiprotons
 * muons
 * tauons
 * negative charged pions
 * anions

Particles with zero charge

 * neutrons
 * photons
 * neutrinos
 * neutral pions
 * z boson
 * higgs boson
 * atoms