Chapter 5 study guide Flashcards
those electrons that have the highest energy level and are held most loosely
valence electron
includes the symbol for the element surrounded by dots
electron dot diagram
the force of attraction that holds two atoms together as a result of the rearrangement of electrons between them
chemical bond
an atom or group of atoms that has an electric charge
ion
ions that are made of more that one atom
polyatomic ion
the attraction between two oppositely charged ions
ionic bond
a compound that consists of positive and negative ions
ionic compound
a combination of symbols that shows the ratio of elements in a compound
chemical formula
tells you the ratio of elements in the compound
subscript
when the ions form an orderly, three-dimensional arrangement
crystal
the chemical bond formed when two atoms share electrons
covalent bond
a nuetral group of atoms joined by covalent bonds
molecule
when two atoms share two pairs of electrons
double bond
when atoms share three pairs of electrons
triple bond
a compound that is composed of molecules
molecular compound
a covalent bond in which electrons are shared unequally
polar bond
a covalent bond in which electrons are shared equally
nonpolar bond
a mixture of two or more elements, at least one of which is a metal
alloy
an attraction between a positive metal ion and the many electrons surrounding it.
metallic bond
