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Unit 4 Vocab

atomic mass average mass of one atom of element.
peridic table a chart showing element reapeating pattern.
chemical symbol one or two letter reperentations of an element.
period a horozontal row of elements in the periodic table.
group elements in the same vertical column of the perodic.
matter substance that cannot be broken down into other substances.
element A substance in which two or more elements are chemical joined
compound a substance in which two or more elements are chmical joined
atom the basic unit of a chemical element.
electron a tiny negative charge partical that moves around the nucleus of an atom.
energy level
mass number
atomic number
Created by: saintsfan