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Nucleus the central core of an atom containing protons and neutrons
Proton a small, positively charged particle in the nucleus of an atom
Neutron a small particle in the nucleus of an atom with no electrical charge
Electron a tiny, negatively charged particle that moves around the nucleus of an atom
Isotope an atom with the same number of protons and a different number of neutrons from other atoms of the same element
Atomic Number the number of protons in the nucleus of an atom
Mass Number the sum of protons and neutrons in the nucleus of an atom
Model a diagram, mental picture, mathematical statement or an object that explains ideas about the natural world
Atomic Mass the average mass of all the isotopes of an element
Periodic Table a chart of elements showing the repeating pattern of their properties
Chemical Symbol a one or two letter representation of an element
Period a horizontal row of elements in the periodic table
Group elements in the same vertical column of the periodic table
Created by: nmehlhaff