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Atomic Structure

TermDefinition
Neutron A neutron is a subatomic particle located inside the nucleus of an atom. It has 0 charge, its neutral. Weight = 1.
Proton A proton is a subatomic particle located inside the nucleus of an atom. It is positively charged (+). Weight = 1
Electron An electron is a subatomic particle outside the nucleus, orbiting in energy levels/electron shells. It is negatively charged (-). It is very small and light and weight = 0, almost nothing. It is able to be lost or gained during a chemical reaction.
Nucleus The nucleus is a dense core in the center of the atom. It is dense because it contains all the mass of the atom in a small space. It contains protons and neutrons and is positively charged because of protons. It is the weight of the atom.
Electron Shell The electron shell has a maximum capacity. The 1st shell can hold 2 electrons, 2nd shell can hold 8 electrons and the 3rd shell can hold 8 electrons.
Atom Electrical Charge The atom of the element contains equal numbers of protons and electrons and so have no overall charge
Subatomic Particles Particles which make up an atom (protons, neutrons, electrons) are called subatomic particles.
Atomic Arrangement - electrons come in pairs - go in quadrants
Created by: pikabrezigar