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Unit 4 Vocab
Term | Definition |
---|---|
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. |
neucleus | |
proton | |
neutron | |
energy level | |
Isotope | |
mass number | |
atomic number | |
metal |