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atom the basic particle from which all elements are made from
electron a tiny negatively charged particle that moves around the outside of the nucleus
nucleus the central core of an atom which contains protons and neutrons
proton small positively charged particles that are found in the nucleus of an atom
energy level a region of an atom in which electrons of the same energy level are likely to be found
neutron a small particle in the nucleus of the atom, with no electrical charge
atomic number the number of protons in the nucleus of an atom
isotope an atom with the same amount of protons and i different number of neutrons from the other atoms of the same element
mass number the total number of protons and neutrons in a nucleus
chemical symbol a code for a chemicall element
periodic table a table of the elements arranged in order
group a number of people or things that are located close together
atomic mass the mass of an atom; mass is because of protons and neutrons
period a length or portion of time
Created by: anonymous_