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Unit 3

TermDefinition
atom smallest particle in which an element can be divided
electron negatively charged atoms
nucleus small dense center of an atom
protons positively charged atoms
neutrons neutrally charged atoms
electron cloud place where all electrons are stored
atomic number number of protons in the nucleus
mass number total numbers of protons and neutrons
periodic table arrangement of elements
metals elements that are shiny and conduct electricity
nonmetals poor conductors of electricity
metalloids semi conductors
group elements with similar properties
period row of elements
chemical symbol abbreviation of elements name
average atomic mass weighted average mass of element
Created by: 18sculline1111
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