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classifying elements

TermDefinition
proton a particle in space inside the nucleus of an atom that carries one unit of positive electric charge
electron a particle in the space outside the nucleus of an atom that carries one unit of negative electric charge
atomic number
molecule a particle that contains two or more atoms joined together
metals a substance that conducts heat and electricity
nonmetal a group of elements that are poor conductors of heat and electricity
noble gases the nonmetallic elements helium, neon, argon, krypton, xenon, and radon
metalloids a small group of elements with some properties of both metals and nonmetals
periodic table a chart that shows all of the known elements and their properties
Created by: 610034493
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