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8.5A Atoms

Structure, Subatomic Particles Location, Mass and Charge

Nucleus the tiny, very dense, positively charged region in the center of an atom; made up of protons and neutrons
Electron Cloud the area surrounding the nucleus of an atom where the electrons are found
Electrical Charge a property of matter; the number of protons and electrons determine the charge of an element
Proton a positively charged subatomic particle of the nucleus of an atom that contributes to the mass of the atom
Neutron a subatomic a particle of the nucleus of an atom that is without charge; contributes to the mass of an atom
Electron a negatively charged subatomic particle that orbits the atomic cloud
Subatomic Particle particles that are smaller than the atom
Chemical Formula uses chemical symbols and numbers as subscripts to represent the type and number of atoms that are present
Atomic Mass the mass of an atom; approximately equal to the number of protons and neutrons in the nucleus
Atom the smallest particle of an element, made of protons, neutrons, and electrons
Created by: Mrs_Bullock


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