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an electrically charged atom or group of atoms formed by the loss or gain of one or more atoms

polyatomic ion

An ion made up of two or more atoms bonded together that acts as a single unit with a net charge.

valence electrons

electrons in the outermost energy level

ionic bond

the attraction between two oppositely charged ions, forms ionic compounds

ionic compound

composed of positive and negative ions that are combined so that the numbers of positive and negative charges are equal

chemical bond

force of attraction that holds 2 atoms together

chemical reaction

process in which substances under so chemical charges that result in the formula of new substances.


shares the ration, if none written it's one


orderly 3 dimensional arrangement of atoms

properties of metals

luster, brittle, malleable, ductile, good conductors of heat,electricity

covalent bond

bond formed when atoms shared electrons


a neutral group of atoms that are held together by one or more covalent bonds

single bond

a bond formed when two atoms share a pair of electrons

double bond

a covalent bond in which two pairs of electrons are shared between two atoms

triple bond

a covalent bond in which three pairs of electrons are shared by two atoms

polar bond

a covalent bond in which electrons are not shared equally

nonpolar bond

Covalent bond where electrons are shared equally


a mixture of two or more elements that has the properties of metals

metallic bond

an attraction between a positive metal ion and the electrons surrounding it

properties of ionic compounds

High melting and boiling points, conducts electricity as liquids or solutions, hard and brittle, solids at room temperature

properties of molecular compounds

low melting and boiling points, poor counducity, many are liquids at room temperature.

molecule compound

a chemical compound whose simplest units are molecules

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