Michael Faraday discovered this in 1831.
Sir J.J Thomson first discovered that atoms had a negatively charged particle called an "ELECTRON". Afterwards , Goldstein discovered "PROTONS", the positively charged particles.
JJ Thomson discovered that atoms were not indivisible because he discovered that atoms contained negatively charged subatomic particles which he called electrons.
Electrons
protons (:
One! An atom is not made up of other atoms, but has a nucleus of a positively-charged proton and a neutrally-charged neutron. It is surrounded by a network of positively-charged particles called electrons. (sorry, NEGATIVELY charged particles called electrons!)
Protons
In 1897, a British scientis named J.J. Thomson.
Many things are composed of charged particles, including atoms (which consist of positively charged protons, neutral neutrons, and negatively charged electrons), ions (atoms with a net positive or negative charge), and plasma (a state of matter in which electrons are stripped from atoms, creating a mix of charged particles).
fragments of atoms are the subatomic particles. the charged sub atomic particles are electrons and protons
Positively charged particles in an atom are called protons. They are located in the nucleus of the atom and their positive charge balances the negative charge of electrons to keep the atom electrically neutral.
J J Thomson
Charged particles that form when atoms gain or lose electrons are called ions. When an atom gains electrons, it becomes a negatively charged ion (anion). When an atom loses electrons, it becomes a positively charged ion (cation).