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Chapter 17..
| Term | Definition |
|---|---|
| atom | the smallest particle of an element that still retains the properties of the element |
| atomic number | number of protons in atom's nucleus |
| average atomic number | weighted-average mass of the mixture of an element's isotopes |
| electron | particles surrounding the center of an atom that have a change |
| electron cloud | area around the nucleus of an atom where the atom's electrons are most likely to be found |
| electron dot diagram | uses the symbol for an element and dots representing the number of electrons in the element's outer energy level |
| group | or families and are numbered 1 through 18 |
| isotope | atoms of the same element that have different numbers of neutrons |
| mass number | sum of the number of protons and neutron in an atom's nucleus |
| neutron | neutral particle, composed of quarks, inside the nucleus of an atom |
| nucleus | positively charged center of an atom that contains protons and neutrons and is surrounded by a cloud of electrons |
| period | horizontal row in the periodic table |
| periodic table | organize list of unknown elements |
| proton | are particles with an electrical charge of 1- |
| quark | protons and neutrons, however, are made up of smaller particles |
Created by:
Jada.T
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