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Periodic Table & Bonds

Valence Electrons The electrons that are in the highest energy level of an atom that are involved in chemical reactions.
Reactant The substance that enters in a chemical reaction
Proton A positively charged particle that is part of an atom's nucleus
Proton Represented by the atomic number
period A horizontal row of elements on the periodic table that indicates the number of orbitals an element has
Noble Gas An element in group 18 on the periodic table that has 8 valence electrons
Metalloid An element that has some characteristics of a metal & a nonmetal
Metal A class of elements that are shiny, malleable, ductile and good conductors of heat and electricity
Mass Number The number of protons and neutrons in the nucleus of an atom. (Normally found at the bottom of a square on the periodic table)
Group Elements in the same vertical column of the periodic table. AKA a family. (Determines the number of valence electrons)
Element A substance that cannot be broken down into other substances by physical or chemical means
Electron A negatively charged particle that floats around the nucleus in orbitals
Chemical Reaction The process in which substances undergo chemical changes that result in the formation of new substances.
Created by: smitchell7



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