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Chapter 22 and 23

Physical Science

TermDefinition
valence electrons the electrons in the outer most energy level of an atom
octet rule elements bond to make an outer energy level full of electrons(usually eight) to become stable
ion charged particle
ionic bond a bond in which electrons are transferred; the resulting ions attract each other
oxidation number usually the charge of the ion
polyatomic ion covalently bonded group of atoms with a charge
covalent bond bond in which one or more pairs of electrons are shared by two atoms
polar covalent electrons are shared unevenly creating a slightly negative and a slightly positive end of the molecole
synthesis two or more substances combine to form one substance
decomposition one substance breaks down into two or more substances
single displacement one element replaces another element in a compound
double displacement both positive ions switch to form new substances
combustion a reactant burns in the presence of oxygen to create water and carbon dioxide
Created by: 100008201473505