chapter 4 Flashcards
chemical bond
the attractive forceds that hold elements together
why do bonds form
bonds form because the atoms are of lower potential energy when they are separate
ionic bond
occur between a metal and a nonmetal
covalent bond
the mutually stabalizing sharing of valence electrons between nonmetals
molecules
compounds arising from atoms witth covalent bonds
molecular formula
the exact ratio of the elements without simplification
ex h202
structural formula
the lewis diqagram
empirical formula
the ratio of the elements with simplification
ex HO
polyatomic ionm
a compound composed of covalent bonds that has a charge
naming metals
they havbe name (III)
mass % of X given the compound
((number atoms x)(X molar mass))/total molar mass
nonpolar covalent
equal shairing of bonding electrons
polar covalent
unequal sharing of electrons
dipole moment
cross arrow pointing twoards more electronegative
dif EN 0-.4
covalent