Substances in the world consist of small particles which are called An atom or atoms (Atoms) within the atom is composed of small particles, electric 3 types are electrons, protons and neutrons, and electrons are negative chargeNeutron is neutral and charged The coexistence of the three particles in atoms is characterized in that the protons and neutrons together in the middle, called the nucleus, and the electrons orbiting around. Other
.The flow of electrons 2.2.1.2
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