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3 Unit Bonding

Unit 3 Bonding Vocabulary

TermDefinition
ion an atom that has lost or gained electron(s) and now has a charge because the protons and electrons are not in balance
anion a negative ion formed when an atom gains one or more electrons
cation a positive ion formed when an atom loses one or more electrons
metal elements on the periodic table located to the left of the zig zag line (except hydrogen)
nonmetal elements on the periodic table located to the right of the zig zag line (plus hydrogen)
chemical bond a force of attraction that holds two atoms together
ionic bond atoms held together by the charges formed when electrons are transferred
covalent bond atoms held together by electron sharing
chemical formula element symbols with subscripts that show how many of each type of atom is present
ionic compund typically a metal bonded to a nonmetal
covalent (molecular) compound typically a nonmetal bonded to a nonmetal
electron dot (Lewis) diagram a diagram that shows the element identity and valence electrons
bonding pair a pair of shared electrons located between two atoms
lone pair a pair of electrons that is not shared between atoms
double bond two pairs of shared electrons
triple bond three pairs of shared electrons
polyatomic ion a group of atoms that are covalently bonded together and act as a single unit
molecule two or more atoms held together by covalent bonds
compound two or more atoms held together by chemical bonds (can be either ionic or covalent)
valence electrons electrons that are located in the outermost shell and are involved in chemical bonding
Created by: kost
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