mole test vocab

empirical formula

smallest whole number ratio

molecular formula

exact number of each element

formula mass

mass of one particle, amu

% composition

% of each element in the compound

mole

standard unit for amount, measured by Avogadro’s number

Avogadro’s number

number of particles in a mole

molar mass

mass of a mole of particles, g

formula units

chemical formula of ionic compound, metal and nonmetal

molecules

chemical formula of covalent compound, 2 nonmetals

ion

charged atom, anion and cation

hydrate

compounds with h2o attached

anhydrous

compound with no water

deliquescent

picks up so much h2o that it converts to a solution

desiccant

picks up h2o from air